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1998 Honda Civic LX idling at 4000rpm

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Old 06-24-2015, 07:33 PM
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Icon3 1998 Honda Civic LX idling at 4000rpm

Okay guys, so today I replaced my head gasket with a buddy of mine. Took forever. After replacing everything in the gasket kit and putting it all back together, I am having multiple issues. Not entirely sure if I'm just inexperienced and did something wrong. Turned the car over after replacing everything and it's idling at 4000rpms and sounds like its going eighty down the highway just sitting in a driveway. Also, my car won't shift gears while the car is off. It's an automatic so there's no clutch involved. I'm so confused and burnt out after the head gasket repair that I don't know where to start. I cleaned the hell out of the throttle body, it's still idling at 4000rpm. What do?
Old 06-24-2015, 07:43 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

Loosen the throttle cable.



Originally Posted by TokinKnight
Also, my car won't shift gears while the car is off.
More details?
Old 06-24-2015, 07:45 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

No the axles were not removed. We did loosen the throttle cable however it didn't help.
Old 06-24-2015, 07:46 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

Cover the top of the throttle body with your palm. Does engine die?
Old 06-24-2015, 07:52 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

I'm unable to do more work on the car tonight because it's sitting outside my friend's house, however I can tell you that when the car was off and we tried to put it in neutral to roll it out of his drive-way because I was too worried to try and drive it out with the rpm's, the button on the shifter wouldn't even click it for me to switch the gears period. I had to use the service key to put the car in neutral and roll it down the drive way.
Old 06-24-2015, 07:57 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

Check fuse 25.
Old 06-24-2015, 08:01 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

Will do, I'll come back with progress tomorrow. What I really can't understand is the car was running fine on the way to do the head gasket job because I filled it with coolant before I drove it and then I replaced the issue and now I'm having two more.
Old 06-25-2015, 02:53 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

Back again and we're opening the throttle body up to clean it just to see what happens.
Old 06-25-2015, 05:48 PM
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Default Re: 1998 Honda Civic LX idling at 4000rpm

Cleaned up the throttle body, car idles normally and runs fantastic after the head gasket job. Now to wait and see what the car does the next four days to determine if my head is cracked or not.
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