1994 Mercury Grand Marquis Fuse Box

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and appropriately not compensated for and can lean the engine out and can furthermore allow the engine to rev occurring in the manner of not desired causing gruff running. As its a mechanical irregularity it tends not to turn on the deviation roomy and you can sometimes listen a hissing noise behind the engine running.

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I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. in the manner of I unplug it and rule the motor, the car runs rasping and at 850ish. I can on your own guess that my other rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of all this. I don't think the tps has that much rule in the every second of rpm though? I think it on your own adjusts it roughly speaking 1k..

This could be a large vacuum leak ,with the MAF amalgamated it is unaided measuring the expose that is getting taking into account the MAF, fittingly if the intake manifold is sucking in ventilate the expose to fuel ratio will be unquestionably out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. next carb cleaner vaporizer spray can in the area of the hissing later the engine direction and with you listen the engine stall or rev vanguard there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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