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Headlights dimming at idle

Tiny
FANCYFLYER
  • MEMBER
  • 2007 CHRYSLER PT CRUISER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 25,000 MILES
Enter your question. Headlights dim when I turn on the heater fan at idle. Also, they seem to dim a little at a stop. Just noticed it tonight. Could that be a battery problem, an alternator problem or something else. This is a 2007 PT Cruiser with only 25,000 miles.
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Friday, December 17th, 2010 AT 4:16 AM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
First check the alternator charge rate, have the battery load tested and check that all battery terminals are making a clean and tight contact to the posts, start here.

Mark (mhpautos)
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Friday, December 17th, 2010 AT 10:46 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
I wouldn't be real surprised if you find no problem. It's not terribly unusual to see symptoms like that at idle. Sometimes the RPMs just aren't sufficient to keep up with the load.
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Friday, December 17th, 2010 AT 10:48 AM

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