6th generation of Honda's popular compact car.

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Why is my check engine light on

I have a 98 acura integra with a Honda motor. I just changed the thermostat and the gasket for it. The car was running fine yesterday. It started smoking out white smoke from the radiator found out the thermostat was bad so I changed it. And I started the car afterwards and it's idling hard and reving itself up to 3K by its self no pushing of the gas pedal and it's smoking white smoke again from places. I also replaced the upper radiator hose this morning due to dry rot. And I also replaced the intake gasket this week too. I just bought his car and was told it had a few problems. And I've fixed those which was the exhaust and the cv Axel on the passenger side. what could be the problem?

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@jkortiz,Kate, Very sorry you are having issues with your newly acquired car. If the cooling system was not bled properly there could be air in the system causing issues on the heat sensor giving incorrect signal to computer causing engine to Rev. and could cause engine light to come on. This is not the only reason though, there are various other sensors/parts that could be faulty causing this issue. As a first step have the car scanned for trouble codes as it may identify the exact problem. Some of the auto parts suppliers offer free code reading like Pepboys, Nappa, Advanced auto parts,etc and some of the guys are very knowledgeable and may have seen the issue often and put you on the right track. It also worries me that you see steam/white smoke from other area's, have who ever did the intake gasket change recheck their work and may have to do a leak down test of cooling system to locate leaks if present.

No use guessing and throwing parts at it, have it scanned at one of the above or by a good local shop/garage. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.

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The white smoke is coming from the newly replaced gasket. It's coming from from underneath which makes me think exhaust?? It's also raining here and the motor got wet so could the moisture from the weather make the motor smoke?? My boyfriends dad is coming over with his scanner to see what's codes pop up. I'll message back as soon as I know. This was very helpful.


@jkortiz , Kate, Thanks for replying back, as we are volunteers here at ifixit, I may be out for a while but will try to help when I can. Good luck with your repair.


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