Hello, I have repaired beyond 30000 vehicles in my career and I dependence to ask you questions since I am not there in person to hoard facts, data, or to exam your vehicle. I may question you to ham it up breakdown in my stead. If chemical analysis is needed and you would rather not function testing, I can find the money for my best advice, Fuel pressure?
Might after that be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a quick fault find if you unplug the meter and manage the engine without it. if the engine condition is the same then chances are the meter or the attachment to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can get coated as soon as dirt beyond period which later offsets the reading. Use some door cleaner or brake cleaner to vaporizer onto the wires to sever the dirt upon no account be adjacent to the wires afterward all as they are utterly fragile
afterward I begin the car, the engine surges occurring amongst 1200 and 2000 rpm help and forth. I distorted the IAC and the TPS afterward no modify 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 readiness screw to belittle the rpm and it would maintain for a while. Now, the engine is for eternity surging to the reduction where I cannot drive it for scare of broken to the steer train. Any experienced solution?