89 Audi 100 - No Start, Battery OK, What next?
#41
Guest
Posts: n/a
Re: Radiator Fan Controls
Stephen Clark wrote:
> Thanks, Tony, I was vaguely aware of how the fan controls work. The only
> thing I have noticed that is abnormal, other than the fan coming on very
> briefly when the car is off after a hot run, is that fan speed two has not
> worked with the a/c off for quite some time. For example, if I am in stop
> and go traffic in the winter, and the engine gets hot enough, fan speed
> three will come on ( sounds like an aircraft taking off! ) until the
> coolant temp drops below it's preset threshold. The engine never overheats,
> so this has not been a problem from a practical point of view, so I have not
> done anything about it.
>
> However I usually have the a/c on about eight months out of the year,
> because it's hot and muggy in Houston even in the spring and fall. Fan speed
> one is sufficient to keep the coolant temp normal with the a/c on, and I'm
> not sure that fan speed two ever comes on when the a/c is kept on all the
> time.
>
> I'm thinking maybe I should check/replace the relay for fan speed two? If
> the temp sensor were the culprit, why would fan speed three operate at all?
> Am I on the right track?
>
> I'll send Steve Sears your greeting!
>
> Have a great Memorial Day weekend...
>
>
Sounds lie you are on the right track in diagnosing the fan. I would
suggest changing the thermo switch on the bottom of the radiator as it
is most likely the problem with speed two. It could also be the fan
speed two relay. You can easily unplug the thermo switch and jumper the
connections to operate speeds two and three. If Two doesn't run then its
the thermo switch.
However, given that your fan seems to be operating fairly well I would
guess that your battery drain is due to something else. You could try
pulling relays / fuses and checking for current draw with the ingition off.
#42
Guest
Posts: n/a
New information after 3 days...
I have let the car sit for three days without using it, in order to monitor
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
#43
Guest
Posts: n/a
New information after 3 days...
I have let the car sit for three days without using it, in order to monitor
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
#44
Guest
Posts: n/a
New information after 3 days...
I have let the car sit for three days without using it, in order to monitor
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
#45
Guest
Posts: n/a
New information after 3 days...
I have let the car sit for three days without using it, in order to monitor
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
the battery's state of charge.
Started out three days ago with a full charge of 12.63 volts. It is now down
to 12.38 volts after three days of sitting. That's about a 0.25V drop over
three days.
Measured the residual current draw at the battery cable connection to be
81.5 ma. This is with everything off, including interior lights. The only
draws should be clock, radio memory, and alarm. Is this a reasonable draw?
Might I still have a battery that is not holding charge sufficiently? The
auto parts store won't warranty it, because their equipment shows the
battery to be good, and it is only six months old.
Also, the radiator fan has not come on in three days, so I am ruling that
out as a possible cause of a sudden discharge. I am puzzled as to what
could have brought the battery to it's knees in the brief 10 minutes I was
in the grocery store three days ago. Nothing was left on that would have
drained the battery that fast. I can only assume that there is a fault in
the battery, but I can't prove it to the auto parts store folks.
--
Stephen Clark
89 Audi 100
Houston, Texas USA
#46
Guest
Posts: n/a
Re: New information after 3 days...
On Sat, 26 May 2007 18:23:01 -0500, "Stephen Clark"
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
#47
Guest
Posts: n/a
Re: New information after 3 days...
On Sat, 26 May 2007 18:23:01 -0500, "Stephen Clark"
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
#48
Guest
Posts: n/a
Re: New information after 3 days...
On Sat, 26 May 2007 18:23:01 -0500, "Stephen Clark"
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
#49
Guest
Posts: n/a
Re: New information after 3 days...
On Sat, 26 May 2007 18:23:01 -0500, "Stephen Clark"
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
<noone@nothing.not> wrote:
>I have let the car sit for three days without using it, in order to monitor
>the battery's state of charge.
>
>Started out three days ago with a full charge of 12.63 volts. It is now down
>to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>three days.
>
>Measured the residual current draw at the battery cable connection to be
>81.5 ma. This is with everything off, including interior lights. The only
>draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>Might I still have a battery that is not holding charge sufficiently? The
>auto parts store won't warranty it, because their equipment shows the
>battery to be good, and it is only six months old.
>
>Also, the radiator fan has not come on in three days, so I am ruling that
>out as a possible cause of a sudden discharge. I am puzzled as to what
>could have brought the battery to it's knees in the brief 10 minutes I was
>in the grocery store three days ago. Nothing was left on that would have
>drained the battery that fast. I can only assume that there is a fault in
>the battery, but I can't prove it to the auto parts store folks.
82 MA (I rounded up) is a *bit* high, but totally out of line.
Generally you want it below 50 MA if possible. Consider also that some
loads may come and go, so a current logging setup may be needed.
#50
Guest
Posts: n/a
Re: New information after 3 days...
PeterD wrote:
> On Sat, 26 May 2007 18:23:01 -0500, "Stephen Clark"
> <noone@nothing.not> wrote:
>
>> I have let the car sit for three days without using it, in order to monitor
>> the battery's state of charge.
>>
>> Started out three days ago with a full charge of 12.63 volts. It is now down
>> to 12.38 volts after three days of sitting. That's about a 0.25V drop over
>> three days.
>>
>> Measured the residual current draw at the battery cable connection to be
>> 81.5 ma. This is with everything off, including interior lights. The only
>> draws should be clock, radio memory, and alarm. Is this a reasonable draw?
>> Might I still have a battery that is not holding charge sufficiently? The
>> auto parts store won't warranty it, because their equipment shows the
>> battery to be good, and it is only six months old.
>>
>> Also, the radiator fan has not come on in three days, so I am ruling that
>> out as a possible cause of a sudden discharge. I am puzzled as to what
>> could have brought the battery to it's knees in the brief 10 minutes I was
>> in the grocery store three days ago. Nothing was left on that would have
>> drained the battery that fast. I can only assume that there is a fault in
>> the battery, but I can't prove it to the auto parts store folks.
>
> 82 MA (I rounded up) is a *bit* high, but totally out of line.
> Generally you want it below 50 MA if possible. Consider also that some
> loads may come and go, so a current logging setup may be needed.
I remember hearing that batteries can develop internal shorts due to
residue below the cells but that is only likely in the case of old or
re-cycled batteries so probably not what you experienced.
A problem that the T44 series had that caused battery drain and the
occasion fire was due to the battery being under the rear seat and close
to the steel seat springs. The battery included a nylon cover that
snapped over the positive battery terminal to insulate from the springs
when people sat in the seat. If the part was not replaced when changing
batteries there was the potential for problems. I am not sure if this is
possible on your car but might be something to consider.
Let us know what you find.