rev up and down in park

50

Asked by Mar 20, 2012 at 01:18 PM about the 1998 Honda Civic EX

Question type: Maintenance & Repair

When I put it in park after driving it it revs up 2000 psi's and down and up Do you know what causes this?

7 Answers

1,765

idle air control valve should be on the back of your intake manifold with 2 wires going to it and 2 coolant lines.

7 people found this helpful.
50

Thank you Takoda!!! Most helpfull!

3 people found this helpful.
1,765

no problem

2 people found this helpful.
2,845

same thing happened to me... either a bad IAC or a dirty intake manifold...or probably a vaccum issue?

6 people found this helpful.
50

Thank you Anthony! I will check both!

2 people found this helpful.
40

does this make your valves to burn up. i have the same problem when in neutral at a stop it rev's up and down. and i have a valve tapping but my oil level is fine.

4 people found this helpful.

I have a 1998 Honda civic lx. Replaced the distributor and the next day my car started acting crazy like having trouble starting it, draining my battery, engine would shake or kick and my rpm is tweaking moving up n down really fast. When I try to rev it, it would have a lag or it will die out. Eventually starting it a couple more times and letting the engine warm up at about 2 or 3000 rpm car would be normal. Only times when I notice these problems is when the engine is cold. Please help thanks

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