Now you might think that spraying lighter gas vis--vis a hot engine isnt wise, however the flash /ignition narrowing of gas is very nearly 400C appropriately you need a naked ember or spark to set it off and Ive used this method for many years without incident. put it on your mannerism through each viable joint one at a get older and you should locate it. I use a slightly flattened fragment of brake pipe and some rubber hose from the can of lighter gas to allow a spraying wand and allow a speak to blast of gas into each area, especially those difficult to accomplish past large implements.
Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a quick oddity locate 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 relationship to it is faulty. Its in addition to worth cleaning the MAF sensor wires, as they can get coated following dirt higher than times which subsequently offsets the reading. Use some entrance cleaner or brake cleaner to spray can onto the wires to remove the dirt upon no account lie alongside the wires gone all as they are utterly fragile
similar to I start the car, the engine surges taking place in the company of 1200 and 2000 rpm assist and forth. I changed the IAC and the TPS in the manner of no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to adapt the idle eagerness screw to belittle the rpm and it would hold for a while. Now, the engine is for ever and a day surging to the tapering off where I cannot drive it for distress of broken to the steer train. Any experienced solution?