Cold Idle high
#2
Guest
Posts: n/a
Re: Cold Idle high
>From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>
>my 80 has started to run high at start up (2K) untill fully warmed up then
>will idle
>at 900rpm, but if i disconect the coolent temp sender cable before I start
>it runs
>at 900rpm stright away
>
>Should I change the above unit?
Test and don't guess!!!
It may not be the CTS! IIRC Usually they create a lean mixture when they go
bad and it is hard to start a cold engine, but yours may be bad. It is better
to test then to start replacing parts.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
>
>my 80 has started to run high at start up (2K) untill fully warmed up then
>will idle
>at 900rpm, but if i disconect the coolent temp sender cable before I start
>it runs
>at 900rpm stright away
>
>Should I change the above unit?
Test and don't guess!!!
It may not be the CTS! IIRC Usually they create a lean mixture when they go
bad and it is hard to start a cold engine, but yours may be bad. It is better
to test then to start replacing parts.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
#3
Guest
Posts: n/a
Re: Cold Idle high
>From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>
>my 80 has started to run high at start up (2K) untill fully warmed up then
>will idle
>at 900rpm, but if i disconect the coolent temp sender cable before I start
>it runs
>at 900rpm stright away
>
>Should I change the above unit?
Test and don't guess!!!
It may not be the CTS! IIRC Usually they create a lean mixture when they go
bad and it is hard to start a cold engine, but yours may be bad. It is better
to test then to start replacing parts.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
>
>my 80 has started to run high at start up (2K) untill fully warmed up then
>will idle
>at 900rpm, but if i disconect the coolent temp sender cable before I start
>it runs
>at 900rpm stright away
>
>Should I change the above unit?
Test and don't guess!!!
It may not be the CTS! IIRC Usually they create a lean mixture when they go
bad and it is hard to start a cold engine, but yours may be bad. It is better
to test then to start replacing parts.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
#4
Guest
Posts: n/a
Re: Cold Idle high
"dave" <vwdoc1@aol.comANTISPAM> wrote in message
news:20041030150833.01575.00003530@mb-m28.aol.com...
> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>
>>my 80 has started to run high at start up (2K) untill fully warmed up then
>>will idle
>>at 900rpm, but if i disconect the coolent temp sender cable before I start
>>it runs
>>at 900rpm stright away
>>
>>Should I change the above unit?
>
> Test and don't guess!!!
>
> It may not be the CTS! IIRC Usually they create a lean mixture when they
> go
> bad and it is hard to start a cold engine, but yours may be bad. It is
> better
> to test then to start replacing parts.
>
> later,
> dave
Dave, can you advise a way to test I do have a multimeter if that would
help?
Regards
Oliver
#5
Guest
Posts: n/a
Re: Cold Idle high
"dave" <vwdoc1@aol.comANTISPAM> wrote in message
news:20041030150833.01575.00003530@mb-m28.aol.com...
> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>
>>my 80 has started to run high at start up (2K) untill fully warmed up then
>>will idle
>>at 900rpm, but if i disconect the coolent temp sender cable before I start
>>it runs
>>at 900rpm stright away
>>
>>Should I change the above unit?
>
> Test and don't guess!!!
>
> It may not be the CTS! IIRC Usually they create a lean mixture when they
> go
> bad and it is hard to start a cold engine, but yours may be bad. It is
> better
> to test then to start replacing parts.
>
> later,
> dave
Dave, can you advise a way to test I do have a multimeter if that would
help?
Regards
Oliver
#6
Guest
Posts: n/a
Re: Cold Idle high
>From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>
>
>"dave" <vwdoc1@aol.comANTISPAM> wrote in message
>news:20041030150833.01575.00003530@mb-m28.aol.com...
>> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>>
>>>my 80 has started to run high at start up (2K) untill fully warmed up then
>>>will idle
>>>at 900rpm, but if i disconect the coolent temp sender cable before I start
>>>it runs
>>>at 900rpm stright away
>>>
>>>Should I change the above unit?
>Dave, can you advise a way to test I do have a multimeter if that would
>help?
>
>Regards
>Oliver
>
Your repair manual should give you a range of readings (ohms) that you will get
from the CTS according to engine temp and outside temp.
You can also compare to a new one or another one if you have one handy.
I don't remember what it should be off the top of my head.
It might be on the internet though if you do a search.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
>
>
>"dave" <vwdoc1@aol.comANTISPAM> wrote in message
>news:20041030150833.01575.00003530@mb-m28.aol.com...
>> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>>
>>>my 80 has started to run high at start up (2K) untill fully warmed up then
>>>will idle
>>>at 900rpm, but if i disconect the coolent temp sender cable before I start
>>>it runs
>>>at 900rpm stright away
>>>
>>>Should I change the above unit?
>Dave, can you advise a way to test I do have a multimeter if that would
>help?
>
>Regards
>Oliver
>
Your repair manual should give you a range of readings (ohms) that you will get
from the CTS according to engine temp and outside temp.
You can also compare to a new one or another one if you have one handy.
I don't remember what it should be off the top of my head.
It might be on the internet though if you do a search.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
#7
Guest
Posts: n/a
Re: Cold Idle high
>From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>
>
>"dave" <vwdoc1@aol.comANTISPAM> wrote in message
>news:20041030150833.01575.00003530@mb-m28.aol.com...
>> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>>
>>>my 80 has started to run high at start up (2K) untill fully warmed up then
>>>will idle
>>>at 900rpm, but if i disconect the coolent temp sender cable before I start
>>>it runs
>>>at 900rpm stright away
>>>
>>>Should I change the above unit?
>Dave, can you advise a way to test I do have a multimeter if that would
>help?
>
>Regards
>Oliver
>
Your repair manual should give you a range of readings (ohms) that you will get
from the CTS according to engine temp and outside temp.
You can also compare to a new one or another one if you have one handy.
I don't remember what it should be off the top of my head.
It might be on the internet though if you do a search.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
>
>
>"dave" <vwdoc1@aol.comANTISPAM> wrote in message
>news:20041030150833.01575.00003530@mb-m28.aol.com...
>> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>>
>>>my 80 has started to run high at start up (2K) untill fully warmed up then
>>>will idle
>>>at 900rpm, but if i disconect the coolent temp sender cable before I start
>>>it runs
>>>at 900rpm stright away
>>>
>>>Should I change the above unit?
>Dave, can you advise a way to test I do have a multimeter if that would
>help?
>
>Regards
>Oliver
>
Your repair manual should give you a range of readings (ohms) that you will get
from the CTS according to engine temp and outside temp.
You can also compare to a new one or another one if you have one handy.
I don't remember what it should be off the top of my head.
It might be on the internet though if you do a search.
later,
dave
Reminder........
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
#8
Guest
Posts: n/a
Re: Cold Idle high
"dave" <vwdoc1@aol.comANTISPAM> wrote in message
news:20041030170459.01624.00003378@mb-m28.aol.com...
> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>
>>
>>"dave" <vwdoc1@aol.comANTISPAM> wrote in message
>>news:20041030150833.01575.00003530@mb-m28.aol.com...
>>> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>>>
>>>>my 80 has started to run high at start up (2K) untill fully warmed up
>>>>then
>>>>will idle
>>>>at 900rpm, but if i disconect the coolent temp sender cable before I
>>>>start
>>>>it runs
>>>>at 900rpm stright away
>>>>
>>>>Should I change the above unit?
>
>>Dave, can you advise a way to test I do have a multimeter if that would
>>help?
>>
>>Regards
>>Oliver
>>
>
> Your repair manual should give you a range of readings (ohms) that you
> will get
> from the CTS according to engine temp and outside temp.
> You can also compare to a new one or another one if you have one handy.
>
> I don't remember what it should be off the top of my head.
> It might be on the internet though if you do a search.
Well I checked the sensor and it was about 3.5k ohms at approx
10c I think thats about right, so no nearer there then
What I have noted is that if I dissconect the ISCV plug it starts to tick
over
at the right speed and does so even if I reconect the plug agian
I must admit I feel like I am stabing in dark, I was hoping this would be a
fault
lots of other 80 owners have had, along with my other post about flats and
low power over 5k revs.
#9
Guest
Posts: n/a
Re: Cold Idle high
"dave" <vwdoc1@aol.comANTISPAM> wrote in message
news:20041030170459.01624.00003378@mb-m28.aol.com...
> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>
>>
>>"dave" <vwdoc1@aol.comANTISPAM> wrote in message
>>news:20041030150833.01575.00003530@mb-m28.aol.com...
>>> >From: "Oliver Gunnell" Oliver.spamGunnell@dsl.pipex.com
>>>>
>>>>my 80 has started to run high at start up (2K) untill fully warmed up
>>>>then
>>>>will idle
>>>>at 900rpm, but if i disconect the coolent temp sender cable before I
>>>>start
>>>>it runs
>>>>at 900rpm stright away
>>>>
>>>>Should I change the above unit?
>
>>Dave, can you advise a way to test I do have a multimeter if that would
>>help?
>>
>>Regards
>>Oliver
>>
>
> Your repair manual should give you a range of readings (ohms) that you
> will get
> from the CTS according to engine temp and outside temp.
> You can also compare to a new one or another one if you have one handy.
>
> I don't remember what it should be off the top of my head.
> It might be on the internet though if you do a search.
Well I checked the sensor and it was about 3.5k ohms at approx
10c I think thats about right, so no nearer there then
What I have noted is that if I dissconect the ISCV plug it starts to tick
over
at the right speed and does so even if I reconect the plug agian
I must admit I feel like I am stabing in dark, I was hoping this would be a
fault
lots of other 80 owners have had, along with my other post about flats and
low power over 5k revs.
#10
Guest
Posts: n/a
Re: Cold Idle high Audi 80
"Oliver Gunnell" <Oliver.spamGunnell@dsl.pipex.com> wrote in message
news:2unv9vF2d4ja8U1@uni-berlin.de...
>
> Well I checked the sensor and it was about 3.5k ohms at approx
> 10c I think thats about right, so no nearer there then
>
> What I have noted is that if I dissconect the ISCV plug it starts to tick
> over
> at the right speed and does so even if I reconect the plug agian
>
> I must admit I feel like I am stabing in dark, I was hoping this would be
> a fault
> lots of other 80 owners have had, along with my other post about flats and
> low power over 5k revs.
>
Is that valve clean? Maybe it is dirty and sticks???