idle 1990 civic hatch

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Jan 28, 2007 | 07:01 PM

#1 (permalink)

dakota_civic

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idle 1990 civic hatch

at idle my car revs up and down....it drives fine and the ecu isnt throwing a code or anything so what could it be???? o2 sensor???? or the sensor in the fuel rail is dirty????

Jan 28, 2007 | 07:03 PM

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Thatguysstuff

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Should be your Idle air control Valve is dirty or clogged up. Its the sensor on the back of your intake, Kinda big!! Should have 2 or 3 bolts on it.

Jan 28, 2007 | 07:10 PM

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superhondaboy

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bleed cooling system,bleeder valve should be on thermostat housing,sometimes it works.good luck!

Jan 28, 2007 | 07:16 PM

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superhondaboy

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you have to bleed it while the car is at idle and let all the bubbles and air bleed out until coolant is shooting out solid stream.

Jan 28, 2007 | 07:21 PM

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LOLWAT

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is it a d series motor?

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Jan 28, 2007 | 07:25 PM

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stockCRXsi

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if it is a single cam this is all the info you will need for a 1990 civic

good luck

http://www.ef-honda.com/ben/Badidle.php

Jan 28, 2007 | 07:29 PM

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LOLWAT

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well i was going to say if its a single cam, there is a censor near the intake manifold and you can just un plug it and the idle problem stops. I did it on my last crx.

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