Engine shakes when ac is on

2004 CHRYSLER PT CRUISER
87,000 MILES
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JCAMPB2
  • MEMBER
  • 1 POST
light came on , was hesitating at traffic lights while stopped in drive, when driving car does not do this . then last few time i filled up with gas it hesitated, then cut off , had to keep foot on gas when stopped to keep running. shakes when ac is on?
Feb 8, 2012 at 8:38 PM
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SQM
  • ✓ASE Certified Mechanic
  • 6,383 POSTS
  • ASE Certified Mechanic
Hello,

You might have a dirty Idle Air Control valve.
A dirty IAC valve can cause the car to have poor idle.
You can first try to clean the IAC, in most cases after cleaning the issue goes away.

Here is an article of how to clean the IAC valve:

https://www.2carpros.com/articles/how-a-idle-air-control-valve-works

https://www.2carpros.com/articles/idle-air-control-valve-service

I have attached the IAC valve location and procedure for your reference.

Please let me know of any questions.

Thank you.
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Jul 28, 2021 at 4:26 PM
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