Coolant fan runs constantly, cool, warm etc., why?


Asked by Apr 27, 2013 at 04:02 PM about the 2010 Chevrolet Cobalt LS

Question type: Maintenance & Repair

fan runs all the time

7 Answers


Will it run with the key off? If it will then the relay is stuck closed, if it shuts off with the key then the fan sensor is defective. Or someone hooked it up to power source that turns on with the key.

3 out of 3 people think this is helpful.

tennisshoes I tow this car and ALWAYS remove the fuse that unlocks the steering wheel, the key remains in ACC while towing. Would this have anything to do with "power source that turns on key"?

2 out of 2 people think this is helpful.

The ignition switch is what turns on all of the power for your car to run, if you have the switch in ACC position you are suppling power to all of the accessories ie radio, wipers, on some models the heater fan. I don't know why you have the key in the ACC position while towing. Have you tried disconnecting the battery, push the brake pedal at least 3 times then reconnect the battery and restart the car to see if that clears the problem?


Can you tell me where the FAN SENSOR is located?

7 out of 7 people think this is helpful.

It should be located next to the oil fill tube close to 2 pipes.

Best Answer

thanks, i'll check it out.


the relays on 07 to 2012 impala burn and short out the fans sometimes stay on or don't work at all the fuse block under the hood shorts out as well gm has a external relay harness as a fix

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Coolant Temperature Too High..?? 39 answers

    i own a 2007 chevy cobalt ls coupe. in traffic, my car goes up to 220 degrees, even when im not moving, and once i start to drive, it goes down. if im not moving, the fan kicks on at 220 degrees. i do...

    2007 Chevrolet Cobalt 2 Dr LS Coupe


    Maintenance & Repair

  • Engine coolant temperature 2 answers

    I'm concerned about my engine. I own a 2010 Chevrolet Cobalt LT sedan. Fort the last week or so, my engine fans have been running for a few seconds after the engine is shut off. Recently my displa...

    2010 Chevrolet Cobalt


    Maintenance & Repair

  • 08 Cobolt running hot 5 answers

    6 months ago I suspected my cobalt had a small head gasket leak due to low coolant and some/little white smoke. I added some expensive stop leak by manufacturers directions and my issues went away...

    2008 Chevrolet Cobalt SS Coupe


    Maintenance & Repair

  • why is coblat running hot 3 answers

    cobalt run hot senor has been check

    2007 Chevrolet Cobalt LS


    Maintenance & Repair


    My cooling fan does not come on all the time. In fact, it comes on intermittently for some reason. I shook the wire and it came on and now it doesn't want to come on. The fan used to come on as s...

    1988 Chevrolet Corvette


    Maintenance & Repair


Looking for a Used Cobalt in your area?

CarGurus has 5,560 nationwide Cobalt listings starting at $950.


Search Chevrolet Cobalt Questions

Chevrolet Cobalt Experts

#1 lightGear
Reputation 1,070
#2 FordNut
Reputation 1,000
#3 dandyoun
Reputation 890
View All

Related Models For Sale

Used Honda Civic"
1,191 Great Deals out of 58,279 listings starting at $1,300
Used Chevrolet Cruze"
1,143 Great Deals out of 74,519 listings starting at $3,995
Used Chevrolet Malibu"
1,190 Great Deals out of 72,676 listings starting at $695
Used Ford Focus"
1,227 Great Deals out of 57,140 listings starting at $1,495
Used Chevrolet Impala"
981 Great Deals out of 35,806 listings starting at $700
Used Ford Mustang"
743 Great Deals out of 41,405 listings starting at $900
Used Honda Accord"
1,338 Great Deals out of 77,942 listings starting at $1,395
Used Toyota Corolla"
1,460 Great Deals out of 67,063 listings starting at $1,295
Used Chevrolet Camaro"
811 Great Deals out of 38,876 listings starting at $2,650
Used Nissan Altima"
1,484 Great Deals out of 87,812 listings starting at $1,195
Used Toyota Camry"
1,669 Great Deals out of 98,345 listings starting at $895
Used Ford Fusion"
1,472 Great Deals out of 79,221 listings starting at $1,450
Used Honda Civic Coupe"
355 Great Deals out of 16,316 listings starting at $799

Used Cars For Sale

2010 Chevrolet Cobalt LS For Sale
13 listings starting at $3,999
2009 Chevrolet Cobalt LS For Sale
5 Great Deals out of 148 listings starting at $1,995