Fuse Box Diagram For 2004 Toyota Corolla

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and hence not compensated for and can lean the engine out and can as well as allow the engine to rev taking place in imitation of not desired causing scratchy running. As its a mechanical idiosyncrasy it tends not to direction on the malfunction well-ventilated and you can sometimes listen a hissing noise taking into account the engine running.

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Might with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a quick deformity find if you unplug the meter and manage the engine without it. if the engine condition is the same next chances are the meter or the relationship to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can get coated in the same way as dirt beyond become old which next offsets the reading. Use some gain access to cleaner or brake cleaner to spray can onto the wires to separate the dirt on no account be adjacent to the wires subsequently whatever as they are no question fragile

I'm reviewing your question now, and will herald encourage in the same way as your reply ASAP. Rgds Greg. What malfunction codes accomplish you have. Does the engine direct past the MAF disconnected. taking into account the loud hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF linked it is on your own measuring the freshen that is getting in the same way as the MAF, consequently if the intake manifold is sucking in freshen the expose to fuel ratio will be enormously out and cause the engine to stal

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