Alternator replacement?

Tiny
ZEMORZEMOR
  • MEMBER
  • 2006 CHRYSLER PT CRUISER
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 96,000 MILES
When the engine is running and turn on the head lights on on high beams and ac on the engine idle poorly and shakes. Is it a sign of a bad alternator?
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Wednesday, September 16th, 2015 AT 7:31 AM

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Tiny
SQM
  • EXPERT
Hello,

First of all you need test the alternator to make sure it is providing correct amount of output.
You can simply use a voltmeter to get the voltage reading while the car is running.
You should be getting around 13.6V to 15.2V with the engine running.

Here is a helpful article of how to do that:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

You might also have a dirty Idle Air Control valve. A dirty IAC valve can cause the car to have poor idle.

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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Wednesday, July 28th, 2021 AT 3:46 PM

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