AskPatty Certified Female Friendly Logo
My vehicle stalls when I have the A/c on and eventually turns off? Why is that?

Answers from the Automotive Experts

Amanda J. Pierce, MBA Nancy, You can have your alternator tested and any auto parts store that offers to do so, and most are for free. You may have too much pre-load on your charging system this can be caused by a failing alternator.

Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube The engine is being slowed down when the AC is on. You need to take it to a good mechanic

Laurie Sarno, Co-Owner at Super Girls Auto Hello Nancy- best guess is engine management system is not receiving input that the compressor is active- the other thing it may be is a bad AC compressor or blockage in the AC system- hope this helps- thanks Super Girls Auto.

Suzanne Grego, Technician at City of Philadelphia Fleet Management Nancy, The most probable cause would be that the compressor is seized. In this case, you would need to replace the compressor and probably a few other A/C parts. Suzanne

Contribute to this question:


blog comments powered by Disqus

Related Chevrolet Avalanche FAQs


  • The airbag light has come on, but the airbag has never deployed. It hasn't been in any ... Read More
  • My wife spilled a drink on the radio in my 2007 Chevy Avalanche. Now the clock is the ... Read More
  • The fuse that controls the gas gauge,alternator and speedometer on my 1991 chevrolet ... Read More
  • I have an 2008 chevy Avalanche with Onstar, In sometime soon will I be able to up grade ... Read More
  • My check engine light is on. Could this be a bad gas cap? Read More
  • My headlights wont work, I changed the bulbs and the fuse. The high beams and parking ... Read More
  • I would like to put white wall tires on this car, any available??? Read More
  • My family wagon has a new battery, new alternator and new cables. It worked great for ... Read More
  • My car thumps when I push on the brakes, but we had the brakes checked and they are fine. ... Read More
  • i have a fuel delivery or supply issue. not sure which, we have ran this 2000 chevy ... Read More

Need Car Advice?

Ask The Experts!

Find Cars For Sale

Help Our Charities