Rough idle

Tiny
STEVE SMITH
  • CHRYSLER CONCORDE

I recently bought a 96 Chrysler Concorde with 118,000 miles. It has a 3.5 engine. Idle is very rough and acts as if the engine will die, but as of yet has not. I have checked codes both with the on board computer and at a shop. No codes showing. I am at a loss because the car drives well down the road, gas mileage is good, and there is no smoke.

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Saturday, January 20th, 2007 AT 8:13 AM

3 Replies

Tiny
BRUCE HUNT
  • EXPERT
  • 3,760 POSTS

Indications are that the automatic transmission control unit has failed. Replace.

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Tuesday, November 14th, 2006 AT 2:39 PM
Tiny
RASMATAZ
  • MEMBER

Try cleaning out the throttle body-check the EGR for carbon-also clean idle speed control or idle air control.

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Sunday, January 21st, 2007 AT 12:49 AM
Tiny
STRATUS98
  • MEMBER

Could also be a clogged catalytic converter. Does your exhaust smell like rotten eggs?

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Sunday, January 21st, 2007 AT 3:47 AM

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