THE CAR IS IN PARK AT IDLE RUNS FINE GIVE IT ...

  • Tiny
  • JoLiFaEm
  • 2001 Mercury Marquis
  • 99,000 miles

The car is in park at idle run's fine give it some gas and it run's rough give it a bit more gas and it smooth's out like a dead spot in the throttle same when driving

Saturday, December 8th, 2012 AT 1:01 AM

3 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

Check for vacuum leaks and check for tune up

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Saturday, December 8th, 2012 AT 1:50 AM
  • Tiny
  • kandrzin
  • Member

Same thing is happening to my 1995 Grand Marquis with 242.000 and I just had a tune-up. I will look for vacuum leaks and in fact considered this as a problem. Might it also be a problem with a blocked air intake or a blocked fuel injector?

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Monday, December 31st, 2012 AT 5:34 PM
  • Tiny
  • kandrzin
  • Member

Actually, the roughness happens at idle and smooths out with higher revs, which is a little different from JoLiFaEm's problem.

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Monday, December 31st, 2012 AT 5:35 PM

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