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1994 Honda Civic Honda idle

Tiny
HONDA LX
  • MEMBER
  • 1994 HONDA CIVIC
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
I have a 1994 honda civic I did a engine swap to a d16z6 the car runs find but I hace a idle problem it likes to idle up and dwon when im at a stop between 1500 rpms to 2300 rpms, and some times it idles just a 2000rpms, when the d16z6 motor came out of the other car it idled fine.
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Thursday, July 9th, 2009 AT 9:18 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi honda lx,

When the idling speed is high, there could be excessive air getting past the throttle body and possible causes are :

1. Insufficient coolant in system or clogged coolant hoses of IAC or cold start valve.
2. Bad PCV, leaking manifold gaskets.
3. Idle adjust adjustment out of specs.
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Sunday, July 19th, 2009 AT 2:41 AM

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