Question about 1997 Honda Civic
When the car is cold it runs great
I had the same problem in my 97 civic dx. Once the car warmed up it would rev up and down whenever the car was idling over and over again. To fix it I found out that the spring on the throttle body was sticky and by spraying it with lubricant (WD-40 or something similar) and working it into the spring until could stretch and contract freely, I never had the problem again.
Posted on Jan 16, 2009
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