Now you might think that spraying lighter gas re a hot engine isnt wise, however the flash /ignition point of gas is nearly 400C appropriately you compulsion a naked flare or spark to set it off and Ive used this method for many years without incident. accomplishment your mannerism through each viable joint one at a epoch and you should find it. I use a slightly flattened fragment of brake pipe and some rubber hose from the can of lighter gas to give a spraying wand and allow a forward blast of gas into each area, especially those hard to reach similar to large implements.
Might then be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a fast idiosyncrasy locate if you unplug the meter and control the engine without it. if the engine condition is the thesame later 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 subsequently dirt higher than times which subsequently offsets the reading. Use some approach cleaner or brake cleaner to spray onto the wires to separate the dirt upon no account touch the wires afterward all as they are agreed fragile
like I start the car, the engine surges happening amid 1200 and 2000 rpm support and forth. I misrepresented the IAC and the TPS next no alter 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 speed screw to belittle the rpm and it would preserve for a while. Now, the engine is until the end of time surging to the dwindling where I cannot steer it for scare of damage to the steer train. Any experienced solution?