Car wants to cut off when air/heat is on

Tiny
KKWEBB87
  • MEMBER
  • 2005 MITSUBISHI GALANT
  • 4 CYL
  • AUTOMATIC
  • 200,000 MILES
When I stop and the air or heat is on my car acts as if it is going to cut off, but once I turn the air or heat off it runs just fine.
Tuesday, April 3rd, 2018 AT 9:43 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
Hello,

This sounds like you have an air conditioner compressor that is going out. I know it is weird but the compression runs with the heater on. Here is a guide to help you see what you are in for when doing the job:

https://www.2carpros.com/articles/replace-air-conditioner-compressor

It could be a dirty throttle body as well. I would try this first,

https://www.2carpros.com/articles/throttle-actuator-service

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Wednesday, April 4th, 2018 AT 11:25 AM

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