1990 Chevy K5 Blazer Wiring Diagram

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and correspondingly not compensated for and can thin the engine out and can also allow the engine to rev stirring later not desired causing rough running. As its a mechanical aberration it tends not to perspective upon the aberration well-ventilated and you can sometimes listen a hissing noise once the engine running.

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I did re-check them tho. The master tech did extensive tests on the ventilate flow meter and said it was good. afterward I unplug it and direct the motor, the car runs unfriendly and at 850ish. I can and no-one else guess that my additional rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much run in the every other of rpm though? I think it solitary adjusts it on the order of 1k..

subsequently I begin the car, the engine surges stirring in the midst of 1200 and 2000 rpm incite and forth. I tainted the IAC and the TPS gone no regulate in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to accustom yourself the idle swiftness screw to belittle the rpm and it would hold for a while. Now, the engine is for ever and a day surging to the dwindling where I cannot steer it for terror of damage to the steer train. Any experienced solution?

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