Hello, I have repaired more than 30000 vehicles in my career and I craving to ask you questions before I am not there in person to store up facts, data, or to exam your vehicle. I may ask you to fake laboratory analysis in my stead. If examination is needed and you would rather not discharge duty testing, I can give my best advice, Fuel pressure?
Might as a consequence be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a quick irregularity locate if you unplug the meter and govern the engine without it. if the engine condition is the thesame subsequently chances are the meter or the relationship to it is faulty. Its along with worth cleaning the MAF sensor wires, as they can get coated in the same way as dirt over times which after that offsets the reading. Use some gate cleaner or brake cleaner to spray onto the wires to cut off the dirt upon no account be next to the wires later all as they are no question fragile
behind I begin the car, the engine surges taking place amid 1200 and 2000 rpm back and forth. I changed the IAC and the TPS considering 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 promptness screw to demean the rpm and it would preserve for a while. Now, the engine is all the time surging to the tapering off where I cannot steer it for panic of damage to the drive train. Any experienced solution?