Now you might think that spraying lighter gas almost a hot engine isnt wise, however the flash /ignition point of gas is more or less 400C suitably you habit a naked fire or spark to set it off and Ive used this method for many years without incident. work your pretentiousness through each feasible joint one at a period 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 find the money for a spraying wand and permit a forward blast of gas into each area, especially those hard to attain gone large implements.
Might along with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a quick irregularity locate if you unplug the meter and rule the engine without it. if the engine condition is the similar then chances are the meter or the membership to it is faulty. Its also worth cleaning the MAF sensor wires, as they can get coated subsequently dirt greater than times which after that offsets the reading. Use some log on cleaner or brake cleaner to spray can onto the wires to remove the dirt on no account be next to the wires considering whatever as they are no question fragile
later I start the car, the engine surges going on amid 1200 and 2000 rpm incite and forth. I distorted the IAC and the TPS next no fiddle with 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 degrade the rpm and it would support for a while. Now, the engine is for eternity surging to the lessening where I cannot drive it for siren of broken to the drive train. Any experienced solution?