1999 honda civic dx automatic trans 103000 miles Idle

1999 HONDA CIVIC

RFABIAN85

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[b:9ad16f050b]OK. I have a 1999 honda civic which not too long ago i crashed, however i fixed it. During the time the car was damaged it ran normal. After i fixed it the check engine light when on and the idle started to jump up and down after a few minutes being on.. (replaced parts sfter accident were radiator, rad fan, headlights,a/c condenser, power steering resevour and oxygen sensor (the one on top {right on the exhaust manifold} since it has two of them) all the parts came off a used car..same motor type and year....well i did get rid of the check engine light by disconnecting the battery for a lil bit, but the idle still jumpy..I checked the air intake (stock) and it has no sensors.. i have no idea whatt it could be that makes the rpms go up and down..thank you for your help[/b:9ad16f050b]

Apr 19, 2006 at 10:59 AM

BRUCE HUNT

CAR REPAIR CONTRIBUTOR
3,754 POSTS

First off I would never just reset a check engine light. I would want to know what it indicated. The surging of the engine could be most likely be related to the radiator. Installing a new one would mean that the coolant was replaced as well. Now, I suspect that there could be air in the system. There are two bleeders to open and allow air to escape. Check that out. Air pockets can set over a sensor and give a false indicator of temp to the ECU computer and cause it to think in needs for gas when it doesn't and then less. Check that out first.

Apr 19, 2006 at 7:33 PM

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