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1998 Honda Accord RPM jumping on idle

Tiny
JETMECH671
  • MEMBER
  • 1998 HONDA ACCORD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
So I have two problems happening to my car first, when I start the car it runs rough and then dies. Does this several times and then magically starts working like new. Second, just recently I started the car and after about a minute the rpm started jumping from 1000 to 2000. Also there is no check engine light. Any help please

thanks
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Tuesday, January 27th, 2009 AT 6:15 PM

2 Replies

Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
I would check for any vacuum leaks. They can cause the problems you are experiencing. Check all of the rubber hoses and the intake manifold as well as the area around the intake manifold gasket.

There are other things to look for but I would start there.
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Tuesday, January 27th, 2009 AT 7:42 PM
Tiny
JETMECH671
  • MEMBER
  • 3 POSTS
Thanks for the feedback. So today I actually got it to fail again but this time I disconnected the MAP sensor and it idle solid at 1000 rpm. I will replace the sensor and hope that fixes it, in the mean time I will look for any leaks. Thanks for leading me in the right direction.
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Thursday, January 29th, 2009 AT 7:41 PM

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