Mercruiser 3 0 Wiring Diagram

This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and correspondingly not compensated for and can thin the engine out and can as a consequence allow the engine to rev in the works taking into consideration not desired causing harsh running. As its a mechanical irregularity it tends not to position on the irregularity roomy and you can sometimes listen a hissing noise once the engine running.

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Might moreover be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a quick fault find if you unplug the meter and run the engine without it. if the engine condition is the similar then chances are the meter or the relationship to it is faulty. Its after that worth cleaning the MAF sensor wires, as they can get coated behind dirt exceeding epoch which then offsets the reading. Use some log on cleaner or brake cleaner to spray can onto the wires to cut off the dirt on no account be adjacent to the wires past everything as they are very fragile

similar to I begin the car, the engine surges stirring in the midst of 1200 and 2000 rpm assist and forth. I untouched the IAC and the TPS in imitation of no regulate in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to get used to the idle keenness screw to belittle the rpm and it would retain for a while. Now, the engine is continually surging to the point where I cannot steer it for scare of damage to the drive train. Any experienced solution?

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