2001 Cadillac sts fan runs when car is off draining battery

Asked by Aug 30, 2012 at 05:33 PM about the 2001 Cadillac Seville STS

Question type: Maintenance & Repair

4 Answers

32,425

computer is telling it to run, either because its faulty or the coolant temp sensor is bad. some vehicles have up to 3 temp sensors. one for the dash one for the fans and one for the computer so it knows what to set the gas mixture to. does it also idle crappy on a cold start up? if so id would put all my marbles in one bag and say its the sensor. hook up a scanner with data reading and check the ECT sensor. a ACTRON cp9145 will read the data.

1 out of 1 people think this is helpful.

Not necessarily. If the water temp is too high the fan will run for a short while (10 - 20 sec) until it falls enough to bring it down within spec regardless of the position of the ignition key ... happens on my CTS-V and Vette once in a while :-).

32,425

Like I said if the temp sensor is bad and saying the temp is too high the fans will run until the temp sensor gets into range but since its bad it will never get into range and stay running killing the battery.

1 out of 1 people think this is helpful.

AND I'm saying for the fan to run a bit after you shut down does NOT mean you've got a problem. Obviously if it does to the point of running your battery down you DO. Then again, allowing it to do so in the first place means you've got other serious, very serious issues. Have a nice day :-)

Your Answer

Add photo

Related Questions

  • Cadillac electrical issue? 22 answers

    1998 Cadillac Seville Sts. Alternator on the car went bad, Had the alternator replaced, then I got a voltage reading of 16.5 ( too high ) I took the car back to the mechanic and They did a rebuild on...

    1998 Cadillac Seville STS

    -

    Maintenance & Repair

  • does the starters click when they are out or going out in my 2001 STS? 2 answers

    My 2001 STS just started having problems not starting sometimes. Does the starter on these cars click like the old ones did? As everyone knows it could be any number of things. Love these cars, but so...

    2001 Cadillac Seville STS

    -

    Maintenance & Repair

  • cooing fans 3 answers

    My 2000 Cadillac seville fans work when i send power to it from a battery but i wanna run a switch to it how would i do that in the fuse box sends hot even when car is off. Hot as in power

    2000 Cadillac Seville SLS

    -

    Maintenance & Repair

  • heater , A/C fan 1 answer

    fan runs even when car is off, could it be the moter on the fan or something else?

    1991 Cadillac Seville Base

    -

    Maintenance & Repair

  • 1997 Cadillac gradually loses battery charge, along with some other minor issues that may be related. Any tips on how I might tackle this? 2 answers

    Hello everybody! A while ago, my 1997 Cadillac Seville started accumulating minor malfunctions before eventually becoming inoperable due to the battery being unable to keep its charge. It started off ...

    Cadillac STS

    -

    Maintenance & Repair

Seville

Looking for a Used Seville in your area?

CarGurus has 391 nationwide Seville listings and the tools to find you a great deal.

ZIP:

Search Cadillac Seville Questions

Cadillac Seville Experts

#1 Tom Demyan
Tom Demyan
Reputation 370
#2 carpetguy53
carpetguy53
Reputation 330
#3 Js08016
Js08016
Reputation 290
View All

Related Models For Sale

Used Cadillac DeVille
6 Great Deals out of 1,954 listings starting at $1,750
Used Cadillac Eldorado
424 listings starting at $2,250
Used Lincoln Town Car
30 Great Deals out of 2,080 listings starting at $1,995
Used Chevrolet Corvette
180 Great Deals out of 20,807 listings starting at $3,995
Used Lincoln Continental
3,714 listings starting at $42,294
Used Cadillac Escalade
308 Great Deals out of 10,692 listings starting at $1,900
Used Chevrolet Impala
796 Great Deals out of 34,383 listings starting at $799
Used BMW 7 Series
168 Great Deals out of 5,952 listings starting at $3,400
Used Chevrolet Camaro
282 Great Deals out of 38,302 listings starting at $1,250
Used Buick Regal
123 Great Deals out of 10,945 listings starting at $1,850