Question about 1993 Toyota Corolla

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Intermittent Injector failure, starts @ 900 then drops to 400 rpm

Have Replaced all plugs, wires, distributor cap, which for one day fixed the problem. I have read that the ECM(ECU) can affect injector output, the injector appears to be ok. Does the knock sensor directly affect injectors causing shut down? Is it possible for the ECM to malfunction causing mixed injector voltage outputs, causing a intermittent missfire? I just spent $500 on a mechanic to find the problem, he said it was bad wires, and now im writing you guys, plz help!

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  • corywannamak Dec 26, 2008

    Clarification: Last summer, fuel tank and filter was replaced.



    Clarification: When The issue occurs, the engine drops to 500rpm and shakes, the exhaust outputs massive amounts of fuel and excess oil. The problem is intermittent, and when it runs normal, exhaust cleans up in minutes, and continues to appear fine again.

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Have you changed your fuel filter and check your fuel pump?

Posted on Dec 26, 2008

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