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1991 Honda Accord idle surge

Tiny
STUMPED91
  • MEMBER
  • 1991 HONDA ACCORD
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I have a 91 accord that is having some idle problems. Upon initial start and warm up there is no problem, but after it is driven, I am assuming after a certain rpm has been reached the idle starts to fluctuate. Its most noticable when you stop and put the car back into park. Almost like you are giving it gas and letting off. My mechanic is basically stumped. At last contact he said it may be the MAP sensor. Please help.
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Tuesday, April 8th, 2008 AT 9:49 PM

1 Reply

Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
Since it does not do the surging all of the time, check these things.

- Vacuum leak
- EGR valve not working properly
- Coolant in the radiator low
- Air in the cooling system
- PCV could be plugged
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Wednesday, April 9th, 2008 AT 12:36 PM

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