Now you might think that spraying lighter gas something like a hot engine isnt wise, however the flash /ignition point of gas is not quite 400C appropriately you obsession a naked flare or spark to set it off and Ive used this method for many years without incident. pretend your mannerism through each reachable 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 present a spraying wand and permit a forward blast of gas into each area, especially those difficult to attain behind large implements.
Might moreover be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast oddity find if you unplug the meter and control the engine without it. if the engine condition is the same subsequently chances are the meter or the link to it is faulty. Its next worth cleaning the MAF sensor wires, as they can acquire coated in the manner of dirt over grow old which next offsets the reading. Use some contact cleaner or brake cleaner to spray onto the wires to sever the dirt on no account be next to the wires subsequent to everything as they are unconditionally fragile
bearing in mind I start the car, the engine surges happening amid 1200 and 2000 rpm incite and forth. I misused the IAC and the TPS afterward no change in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to adjust the idle swiftness screw to demean the rpm and it would support for a while. Now, the engine is at all times surging to the lessening where I cannot steer it for bell of broken to the drive train. Any experienced solution?