Overheating '86 5000 TQ
#1
Guest
Posts: n/a
Overheating '86 5000 TQ
Hi, my '86 5000 TQ has been run above 100C temperatures for the past couple hundred of kilometers and finally today it overheated
twice, (coolant leaked out and the temperature warning light came on), once at night when I was driving it slowly home. I was afraid
that perhaps the head gasket is blown but the car drives great and I cannot see any tell-tale exhaust, which leads me to think that
either it needs a new thermostat or a radiator flush. Is there anything else that could be causing this?
TIA
cp
twice, (coolant leaked out and the temperature warning light came on), once at night when I was driving it slowly home. I was afraid
that perhaps the head gasket is blown but the car drives great and I cannot see any tell-tale exhaust, which leads me to think that
either it needs a new thermostat or a radiator flush. Is there anything else that could be causing this?
TIA
cp
#2
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
cp,
chances are that it's a blown head gasket. Pull the plugs and check the
colour. If one plug is a different colour, chances are the cylinder is
leaking. You can do a compression test (small differences can tell of a
head gasket leak). I was also told to pull the plugs with the engine warm,
and hold an inspection mirror over the plug holes, if it fogs, there's a
coolant leak. Unfortunately, every time the engine overheats, there's a
risk of head warping as the aluminum head and cast iron block do not behave
the same as they cool down - so the failure will only get worse. (BTDT - hg
replaced, head planed)
If it isn't a hg leak (I'm sure you're hoping that it's not), check the
temperature of the rad. If there is a noticible temperature gradient - like
the engine side is hotter than the fender side, the gasket between the hot
and cold ports may have failed and coolant is bypassing the rad. (BTDT -
brass radiator replaced failed plastic rad))
If you're planning on doing a flush&fill, make sure they do it with the rad
disconnected and then do the rad separately to avoid rust & junk from the
engine clogging the rad. The thermostat is easy to test - put it in cooking
oil on the stove with a thermometer in the pot - make sure it opens at the
temp stamped on the flange. It doesn't sound like a t-stat failure, though,
usually they fail open and your car will take forever to warm up.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
couple hundred of kilometers and finally today it overheated
> twice, (coolant leaked out and the temperature warning light came on),
once at night when I was driving it slowly home. I was afraid
> that perhaps the head gasket is blown but the car drives great and I
cannot see any tell-tale exhaust, which leads me to think that
> either it needs a new thermostat or a radiator flush. Is there anything
else that could be causing this?
>
> TIA
> cp
>
>
chances are that it's a blown head gasket. Pull the plugs and check the
colour. If one plug is a different colour, chances are the cylinder is
leaking. You can do a compression test (small differences can tell of a
head gasket leak). I was also told to pull the plugs with the engine warm,
and hold an inspection mirror over the plug holes, if it fogs, there's a
coolant leak. Unfortunately, every time the engine overheats, there's a
risk of head warping as the aluminum head and cast iron block do not behave
the same as they cool down - so the failure will only get worse. (BTDT - hg
replaced, head planed)
If it isn't a hg leak (I'm sure you're hoping that it's not), check the
temperature of the rad. If there is a noticible temperature gradient - like
the engine side is hotter than the fender side, the gasket between the hot
and cold ports may have failed and coolant is bypassing the rad. (BTDT -
brass radiator replaced failed plastic rad))
If you're planning on doing a flush&fill, make sure they do it with the rad
disconnected and then do the rad separately to avoid rust & junk from the
engine clogging the rad. The thermostat is easy to test - put it in cooking
oil on the stove with a thermometer in the pot - make sure it opens at the
temp stamped on the flange. It doesn't sound like a t-stat failure, though,
usually they fail open and your car will take forever to warm up.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
couple hundred of kilometers and finally today it overheated
> twice, (coolant leaked out and the temperature warning light came on),
once at night when I was driving it slowly home. I was afraid
> that perhaps the head gasket is blown but the car drives great and I
cannot see any tell-tale exhaust, which leads me to think that
> either it needs a new thermostat or a radiator flush. Is there anything
else that could be causing this?
>
> TIA
> cp
>
>
#3
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
cp,
chances are that it's a blown head gasket. Pull the plugs and check the
colour. If one plug is a different colour, chances are the cylinder is
leaking. You can do a compression test (small differences can tell of a
head gasket leak). I was also told to pull the plugs with the engine warm,
and hold an inspection mirror over the plug holes, if it fogs, there's a
coolant leak. Unfortunately, every time the engine overheats, there's a
risk of head warping as the aluminum head and cast iron block do not behave
the same as they cool down - so the failure will only get worse. (BTDT - hg
replaced, head planed)
If it isn't a hg leak (I'm sure you're hoping that it's not), check the
temperature of the rad. If there is a noticible temperature gradient - like
the engine side is hotter than the fender side, the gasket between the hot
and cold ports may have failed and coolant is bypassing the rad. (BTDT -
brass radiator replaced failed plastic rad))
If you're planning on doing a flush&fill, make sure they do it with the rad
disconnected and then do the rad separately to avoid rust & junk from the
engine clogging the rad. The thermostat is easy to test - put it in cooking
oil on the stove with a thermometer in the pot - make sure it opens at the
temp stamped on the flange. It doesn't sound like a t-stat failure, though,
usually they fail open and your car will take forever to warm up.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
couple hundred of kilometers and finally today it overheated
> twice, (coolant leaked out and the temperature warning light came on),
once at night when I was driving it slowly home. I was afraid
> that perhaps the head gasket is blown but the car drives great and I
cannot see any tell-tale exhaust, which leads me to think that
> either it needs a new thermostat or a radiator flush. Is there anything
else that could be causing this?
>
> TIA
> cp
>
>
chances are that it's a blown head gasket. Pull the plugs and check the
colour. If one plug is a different colour, chances are the cylinder is
leaking. You can do a compression test (small differences can tell of a
head gasket leak). I was also told to pull the plugs with the engine warm,
and hold an inspection mirror over the plug holes, if it fogs, there's a
coolant leak. Unfortunately, every time the engine overheats, there's a
risk of head warping as the aluminum head and cast iron block do not behave
the same as they cool down - so the failure will only get worse. (BTDT - hg
replaced, head planed)
If it isn't a hg leak (I'm sure you're hoping that it's not), check the
temperature of the rad. If there is a noticible temperature gradient - like
the engine side is hotter than the fender side, the gasket between the hot
and cold ports may have failed and coolant is bypassing the rad. (BTDT -
brass radiator replaced failed plastic rad))
If you're planning on doing a flush&fill, make sure they do it with the rad
disconnected and then do the rad separately to avoid rust & junk from the
engine clogging the rad. The thermostat is easy to test - put it in cooking
oil on the stove with a thermometer in the pot - make sure it opens at the
temp stamped on the flange. It doesn't sound like a t-stat failure, though,
usually they fail open and your car will take forever to warm up.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
couple hundred of kilometers and finally today it overheated
> twice, (coolant leaked out and the temperature warning light came on),
once at night when I was driving it slowly home. I was afraid
> that perhaps the head gasket is blown but the car drives great and I
cannot see any tell-tale exhaust, which leads me to think that
> either it needs a new thermostat or a radiator flush. Is there anything
else that could be causing this?
>
> TIA
> cp
>
>
#4
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
cp,
chances are that it's a blown head gasket. Pull the plugs and check the
colour. If one plug is a different colour, chances are the cylinder is
leaking. You can do a compression test (small differences can tell of a
head gasket leak). I was also told to pull the plugs with the engine warm,
and hold an inspection mirror over the plug holes, if it fogs, there's a
coolant leak. Unfortunately, every time the engine overheats, there's a
risk of head warping as the aluminum head and cast iron block do not behave
the same as they cool down - so the failure will only get worse. (BTDT - hg
replaced, head planed)
If it isn't a hg leak (I'm sure you're hoping that it's not), check the
temperature of the rad. If there is a noticible temperature gradient - like
the engine side is hotter than the fender side, the gasket between the hot
and cold ports may have failed and coolant is bypassing the rad. (BTDT -
brass radiator replaced failed plastic rad))
If you're planning on doing a flush&fill, make sure they do it with the rad
disconnected and then do the rad separately to avoid rust & junk from the
engine clogging the rad. The thermostat is easy to test - put it in cooking
oil on the stove with a thermometer in the pot - make sure it opens at the
temp stamped on the flange. It doesn't sound like a t-stat failure, though,
usually they fail open and your car will take forever to warm up.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
couple hundred of kilometers and finally today it overheated
> twice, (coolant leaked out and the temperature warning light came on),
once at night when I was driving it slowly home. I was afraid
> that perhaps the head gasket is blown but the car drives great and I
cannot see any tell-tale exhaust, which leads me to think that
> either it needs a new thermostat or a radiator flush. Is there anything
else that could be causing this?
>
> TIA
> cp
>
>
chances are that it's a blown head gasket. Pull the plugs and check the
colour. If one plug is a different colour, chances are the cylinder is
leaking. You can do a compression test (small differences can tell of a
head gasket leak). I was also told to pull the plugs with the engine warm,
and hold an inspection mirror over the plug holes, if it fogs, there's a
coolant leak. Unfortunately, every time the engine overheats, there's a
risk of head warping as the aluminum head and cast iron block do not behave
the same as they cool down - so the failure will only get worse. (BTDT - hg
replaced, head planed)
If it isn't a hg leak (I'm sure you're hoping that it's not), check the
temperature of the rad. If there is a noticible temperature gradient - like
the engine side is hotter than the fender side, the gasket between the hot
and cold ports may have failed and coolant is bypassing the rad. (BTDT -
brass radiator replaced failed plastic rad))
If you're planning on doing a flush&fill, make sure they do it with the rad
disconnected and then do the rad separately to avoid rust & junk from the
engine clogging the rad. The thermostat is easy to test - put it in cooking
oil on the stove with a thermometer in the pot - make sure it opens at the
temp stamped on the flange. It doesn't sound like a t-stat failure, though,
usually they fail open and your car will take forever to warm up.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
couple hundred of kilometers and finally today it overheated
> twice, (coolant leaked out and the temperature warning light came on),
once at night when I was driving it slowly home. I was afraid
> that perhaps the head gasket is blown but the car drives great and I
cannot see any tell-tale exhaust, which leads me to think that
> either it needs a new thermostat or a radiator flush. Is there anything
else that could be causing this?
>
> TIA
> cp
>
>
#5
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
Hi Steve, thank you for your help, I will check this out, I SOOOOOO hope that this isn't a bad head gasket! :-\\\\\\\\\
cp
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message news:%hace.13413$gA5.656243@news20.bellglobal.com. ..
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
cp
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message news:%hace.13413$gA5.656243@news20.bellglobal.com. ..
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
#6
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
Hi Steve, thank you for your help, I will check this out, I SOOOOOO hope that this isn't a bad head gasket! :-\\\\\\\\\
cp
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message news:%hace.13413$gA5.656243@news20.bellglobal.com. ..
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
cp
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message news:%hace.13413$gA5.656243@news20.bellglobal.com. ..
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
#7
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
Hi Steve, thank you for your help, I will check this out, I SOOOOOO hope that this isn't a bad head gasket! :-\\\\\\\\\
cp
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message news:%hace.13413$gA5.656243@news20.bellglobal.com. ..
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
cp
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message news:%hace.13413$gA5.656243@news20.bellglobal.com. ..
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
#8
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
Steve, I've checked the oil and coolant, both look as they should. The oil is 2000km old and still looks like new. The coolant is
bright green, still think it could be a blown gasket?
Thank you again, people like you put the 'news' in newsgroup
cp
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
bright green, still think it could be a blown gasket?
Thank you again, people like you put the 'news' in newsgroup
cp
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
#9
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
Steve, I've checked the oil and coolant, both look as they should. The oil is 2000km old and still looks like new. The coolant is
bright green, still think it could be a blown gasket?
Thank you again, people like you put the 'news' in newsgroup
cp
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
bright green, still think it could be a blown gasket?
Thank you again, people like you put the 'news' in newsgroup
cp
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
#10
Guest
Posts: n/a
Re: Overheating '86 5000 TQ
Steve, I've checked the oil and coolant, both look as they should. The oil is 2000km old and still looks like new. The coolant is
bright green, still think it could be a blown gasket?
Thank you again, people like you put the 'news' in newsgroup
cp
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>
bright green, still think it could be a blown gasket?
Thank you again, people like you put the 'news' in newsgroup
cp
> cp,
> chances are that it's a blown head gasket. Pull the plugs and check the
> colour. If one plug is a different colour, chances are the cylinder is
> leaking. You can do a compression test (small differences can tell of a
> head gasket leak). I was also told to pull the plugs with the engine warm,
> and hold an inspection mirror over the plug holes, if it fogs, there's a
> coolant leak. Unfortunately, every time the engine overheats, there's a
> risk of head warping as the aluminum head and cast iron block do not behave
> the same as they cool down - so the failure will only get worse. (BTDT - hg
> replaced, head planed)
> If it isn't a hg leak (I'm sure you're hoping that it's not), check the
> temperature of the rad. If there is a noticible temperature gradient - like
> the engine side is hotter than the fender side, the gasket between the hot
> and cold ports may have failed and coolant is bypassing the rad. (BTDT -
> brass radiator replaced failed plastic rad))
> If you're planning on doing a flush&fill, make sure they do it with the rad
> disconnected and then do the rad separately to avoid rust & junk from the
> engine clogging the rad. The thermostat is easy to test - put it in cooking
> oil on the stove with a thermometer in the pot - make sure it opens at the
> temp stamped on the flange. It doesn't sound like a t-stat failure, though,
> usually they fail open and your car will take forever to warm up.
> Cheers!
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
>
> "cp" <asdf@adsf.com> wrote in message news:ae_be.5622$3V3.344@edtnps89...
>> Hi, my '86 5000 TQ has been run above 100C temperatures for the past
> couple hundred of kilometers and finally today it overheated
>> twice, (coolant leaked out and the temperature warning light came on),
> once at night when I was driving it slowly home. I was afraid
>> that perhaps the head gasket is blown but the car drives great and I
> cannot see any tell-tale exhaust, which leads me to think that
>> either it needs a new thermostat or a radiator flush. Is there anything
> else that could be causing this?
>>
>> TIA
>> cp
>>
>>
>
>