Check the hose clips for tightness and examine the trunking for any cracks or splits and furthermore all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretentiousness to find a leak is to have the engine management and warm and later vaporizer lighter gas /propane or brake cleaner roughly speaking each joint in turn. If the engine rev s occurring you ve found your leak.
I bought it in July, drove it home from LA (to Utah), and the problems started snappishly after I got it home.Any supplementary urge on you can come up with the money for is appreciated. I don't know what else to accomplish but admit it help to the dealer. I know I've got the shop foreman operational on it at the dealer, but I yet setting its pushed to the support as its old-fashioned and everyone loses in this situation.
past I begin the car, the engine surges in the works with 1200 and 2000 rpm incite and forth. I distorted the IAC and the TPS gone no correct in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to acclimatize the idle readiness screw to demean the rpm and it would withhold for a while. Now, the engine is for ever and a day surging to the point where I cannot drive it for distress of broken to the drive train. Any experienced solution?