Hello, I have repaired greater than 30000 vehicles in my career and I craving to question you questions previously I am not there in person to hoard facts, data, or to exam your vehicle. I may ask you to take action assay in my stead. If assay is needed and you would rather not conduct yourself testing, I can pay for my best advice, Fuel pressure?
Might moreover be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a quick deformity find if you unplug the meter and direct the engine without it. if the engine condition is the similar next chances are the meter or the link to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can acquire coated later dirt on top of grow old which then offsets the reading. Use some contact cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt on no account be adjacent to the wires gone all as they are no question fragile
subsequently I start the car, the engine surges taking place surrounded by 1200 and 2000 rpm incite and forth. I untouched the IAC and the TPS as soon as no fiddle with in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to adjust the idle zeal screw to lower the rpm and it would retain for a while. Now, the engine is every time surging to the narrowing where I cannot drive it for radio alarm of broken to the drive train. Any experienced solution?