Over heating / fan not kicking on

Asked by May 22, 2017 at 01:26 PM about the 2007 Chevrolet Cobalt LS

Question type: Maintenance & Repair

Hit front end and broke plastic piece by drain cock
off radiator. Replaced radiator, put in green
coolant. Found out I needed dex cool, flushed
radiator, put in dex cool, replaced thermostat.
Friend checked and said fuses and relays are
good. Coolant temp just keeps climbing while not
moving and fan not kicking on.

2 Answers

135

The fan will turn on at around 211-213 degrees. If the temp rises 5-10 degrees above that and the fan is still not turning on then it could be the fan itself or the temp sensor is malfunctioning.

Replaced fan today. It turned on with a.c. on, but only then and wouldn't shut off until we turned the car off. Thinking the sensor is bad. Gonna replace it tomorrow. Hoping that finally solves it. Replaced about everything else at this point.

Your Answer

Chevrolet Cobalt Experts

  • #1
    lightGear
    Reputation
    1,170
  • #2
    munron
    Reputation
    1,060
  • #3
    dandyoun
    Reputation
    970
View All

Related Models For Sale

Used Honda Civic
763 Great Deals out of 69,164 listings starting at $1,350
Used Chevrolet Malibu
941 Great Deals out of 65,142 listings starting at $1,995
Used Ford Focus
775 Great Deals out of 55,467 listings starting at $800
Used Chevrolet Impala
540 Great Deals out of 35,140 listings starting at $900
Used Ford Mustang
590 Great Deals out of 36,176 listings starting at $1,200
Used Honda Accord
982 Great Deals out of 59,477 listings starting at $1,099
Used Toyota Camry
915 Great Deals out of 81,894 listings starting at $999
Used Nissan Altima
980 Great Deals out of 77,956 listings starting at $1,695
Used Toyota Corolla
776 Great Deals out of 54,488 listings starting at $1,500
Used Ford Fusion
936 Great Deals out of 67,747 listings starting at $1,500
Used Chevrolet Silverado 1500
2,245 Great Deals out of 168,640 listings starting at $1,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.