Asked by Chelset23 Feb 23, 2019 at 07:41 AM about the 2002 Chevrolet Cavalier

Question type: Maintenance & Repair

What could be causing my car to turn off when i
turn my AC or my HEAT on makes a eeeerrrr
noise also when its turned on ?

3 Answers

Okay thanks i will definitely check it out ...that sounds like what exactly is going on


If this happens only at idle, you have a dirty throttle body, and I'd suspect a lower than normal idle. The additional mechanical load of the AC compressor causes the engine to stall. But this wouldn't explain the heat blower motor causing this, as well..... I believe you're also having this issue when driving. When the electrical load of the AC or the fan motor is added, it starves the ignition of electricity and robs the plugs of spark; thus killing the engine. In this case, you have a defective alternator and a weak battery. Have these checked; they both probably need replacing.

1 people found this helpful.

Okay great that really sounds like it could definitely be the problem

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