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1999 Honda Prelude rough idle

Tiny
CHEECH6922
  • MEMBER
  • 1999 HONDA PRELUDE
  • 4 CYL
  • FWD
  • MANUAL
  • 126,000 MILES
My honda prelude has check engine light on, got it checked and read egr pending and misfire in cylinder 3. It also idles rough almost like a misfire but smoothes out when warm. What could be the problem?
Friday, February 6th, 2009 AT 7:33 PM

1 Reply

Tiny
F4I_GUY
  • MECHANIC
  • 3,302 POSTS
Do you know excatly what the EGR code was? The EGR valve could be partially open and that could act as a vacuum leak and cause a rough idle, as it warms up and expands it could close up that small leak. I would recommend getting the EGR system checked out.

Your cylinder 3 misfire may be related, but most likely not. The first thing I would check is if you need a tune-up. It could be a faulty spark plug, wire, injector, etc.
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Monday, February 16th, 2009 AT 2:09 PM

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