my 2009 cobalt AC cools when the engine temp reads 190 or higher and doesn't when lower. why?


Asked by Sep 08, 2016 at 06:30 AM about the 2009 Chevrolet Cobalt LS

Question type: Maintenance & Repair

Temps outside are mid-upper 90s.  coolant temp reads usually in high 180s, occasionally reaching 200.  new 180 degree thermostat (OEM temp setting according to all auto parts suppliers).  recently replaced AC pressure switch (don't know if it was high or low switch).  

2 Answers


It may be that the system could use a charge.

Best Answer

I just had the switch replaced about a week ago. That doesn't mean they fully charged it. When the coolant temp is at or above the 190 degree mark the AC cools like an icebox.

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

  • Why is my 2006 Chevrolet Cobalt stalling so much when I drive it? 38 answers

    Here's the problem I am having: When I stop for a red light, when I stop at a stop sign, when I pull out into the highway or road, when I pull into a parking space it stalls.The RPM goes way,way down ...

    2006 Chevrolet Cobalt LS


    Maintenance & Repair

  • why is coblat running hot 3 answers

    cobalt run hot senor has been check

    2007 Chevrolet Cobalt LS


    Maintenance & Repair

  • 09 Cobalt-Front-end... 13 answers

    So, here is the low down of whats going on... I have a 2009 Chevrolet Cobalt LT2 Coupe... I have taken it to my local dealer to have the front end looked at MULTIPLE times due to an unexplained noise....

    2009 Chevrolet Cobalt LT2 Coupe


    Maintenance & Repair

  • Engine temp gauge running hot 10 answers

    My check engine light came on the other day. Before I could pull over the car stopped. Had it towed. The next day It turned over. However, after driving less than a mile the gauge started moving u...

    2009 Toyota Camry


    Maintenance & Repair

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"
1,125 Great Deals out of 58,278 listings starting at $1,300
Used Chevrolet Malibu"
1,143 Great Deals out of 72,676 listings starting at $695
Used Ford Focus"
1,179 Great Deals out of 57,134 listings starting at $1,495
Used Chevrolet Impala"
934 Great Deals out of 35,800 listings starting at $700
Used Ford Mustang"
722 Great Deals out of 41,401 listings starting at $900
Used Honda Accord"
1,270 Great Deals out of 77,938 listings starting at $1,395
Used Toyota Corolla"
1,427 Great Deals out of 67,056 listings starting at $1,295
Used Chevrolet Camaro"
796 Great Deals out of 38,871 listings starting at $2,650
Used Nissan Altima"
1,408 Great Deals out of 87,810 listings starting at $1,195
Used Toyota Camry"
1,594 Great Deals out of 98,336 listings starting at $895
Used Ford Fusion"
1,414 Great Deals out of 79,216 listings starting at $1,450
Used Honda Civic Coupe"
330 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