need help faulty ecu crx!!!!!

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04-16-2003, 09:01 AM

jayputelis

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Join Date: Apr 2003

Posts: 25

need help faulty ecu crx!!!!!

can anyone give me help/ advice... my car barely idles... real rough... i checked the ecu and it came up as MAP sensor... i replaced the sensor and it ran the same... i then checked the continuity of the wire from the ecu to the sensor... it was fine... yet there is no voltage going through the ecu to the map sensor... i'm guessing a faulty ecu because this happens off and on and just "fixes itself"... any advice will be greatly appreciated... thanks guys.

04-16-2003, 09:21 AM

rickys2000si

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Re:need help faulty ecu crx!!!!!

at idle the ecu wont read the map.
it only uses this voltage when u step on the gas. open loop.

it runs in a closed loop at idle kid, thats why your not getting voltage.
i would check spark, injectors etc..

04-16-2003, 09:29 AM

88crxSi

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Join Date: Feb 2003

Posts: 9,089

Re:need help faulty ecu crx!!!!!

does it idle really low and really rough, idles at like 300rpm some times? Mine does that too. I've been told if you pull off the idle air control valve, on the intake manifold somewhere, and clean that out it will fix the problem. then reset your ecu.

04-17-2003, 07:21 AM

jayputelis

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Join Date: Apr 2003

Posts: 25

Re:need help faulty ecu crx!!!!!

sorry for being nieve... i can't figure out what the "idle air control valve" is and where its located... i tried ALLDATA for info... but its not helping please respond back soon... my car is shitting the bed... thanks.

04-17-2003, 07:51 AM

88crxSi

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Join Date: Feb 2003

Posts: 9,089

Re:need help faulty ecu crx!!!!!

im not exactly sure where. I know its on the back of the intake manifold. Do a internet search for CRX Service Manual and you can down that and find it.