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Weird flat battery and fan running

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Old 02-16-2009, 02:30 PM
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Uber 911
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Default Weird flat battery and fan running

Went to start the 'old girl' this morning, flat battery. Uh! Lights were not left on, however I did notice a fan was running in the engine when I parked up after a long run the evening before. I assumed its would switch off - Clearly not.. Odd

Chris
Old 02-16-2009, 08:48 PM
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timothymoffat
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My 95 did pretty much the same thing a little over a year ago. I had driven the car home from the shop after suspension install and parked it in the garage. Half an hour later I went back to the garage and heard the fan whirring away. Here's where it gets strange; I covered up the blower motor intake with my hand and it stopped. Remove hand and it started up again. It was a cold evening, close to freezing, and the shop had just washed the car before I picked it up. It eventually stopped (before draining the battery) but I never did figure this one out.
Old 02-16-2009, 09:04 PM
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helmet155
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There is a temp sensor in the rear blower fan...in the outlet pipe IIRC...check the sensor for proper operation.
Old 02-16-2009, 11:08 PM
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black ice
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There is a temp sensor in the rear blower fan...in the outlet pipe IIRC...check the sensor for proper operation.
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Mine comes on on hot Summer days when I park and the oil temp is roughly 220F (about 9 o'clock). Cycles on and off for maybe ten minutes or so.

dave
Old 02-17-2009, 12:52 PM
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Stealth 993
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If the car is HOT, the fan will kick on after the car is off, it's in the owners manual.
Old 02-17-2009, 01:05 PM
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geolab
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Originally Posted by Uber 911
Went to start the 'old girl' this morning, flat battery. Uh! Lights were not left on, however I did notice a fan was running in the engine when I parked up after a long run the evening before. I assumed its would switch off - Clearly not.. Odd

Chris
Its is cheaper to change the resistance and eliminate the probability that it is the culprit.
part number 96461655002.
If this resistor is malfunctioning, the fan stays on. $15 ish

To further pinpoint, plug a charged battery now and if the engine electric cooling fan runs, it is definitely the problem, regards

.
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Old 02-17-2009, 01:31 PM
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Uber 911
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GeoLab, you've nailed it

"If this resistor is malfunctioning, the fan stays on. $15 ish"

thanks

Chris



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