Now you might think that spraying lighter gas almost a warm engine isnt wise, however the flash /ignition lessening of gas is approximately 400C thus you obsession a naked flare or spark to set it off and Ive used this method for many years without incident. be in your quirk through each doable joint one at a epoch and you should locate it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying wand and allow a talk to blast of gas into each area, especially those hard to attain subsequent to large implements.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast malfunction locate if you unplug the meter and govern the engine without it. if the engine condition is the same subsequently chances are the meter or the association to it is faulty. Its with worth cleaning the MAF sensor wires, as they can get coated later dirt greater than get older which then offsets the reading. Use some admission cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt on no account be adjacent to the wires when all as they are agreed fragile
like I start the car, the engine surges up in the midst of 1200 and 2000 rpm incite and forth. I misrepresented the IAC and the TPS later no tweak in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle swiftness screw to belittle the rpm and it would keep for a while. Now, the engine is continuously surging to the reduction where I cannot steer it for panic of damage to the drive train. Any experienced solution?