Check the hose clips for tightness and examine the trunking for any cracks or splits and next all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best way to locate a leak is to have the engine admin and warm and later spray can lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s taking place you ve found your leak.
I bought it in July, drove it home from LA (to Utah), and the problems started hastily after I got it home.Any other support you can find the money for is appreciated. I don't know what else to do but undertake it incite to the dealer. I know I've got the shop foreman functional upon it at the dealer, but I nevertheless vibes its pushed to the assist as its outdated and everyone loses in this situation.
later I begin the car, the engine surges in the works in the middle of 1200 and 2000 rpm urge on and forth. I changed the IAC and the TPS behind no change in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to familiarize the idle swiftness screw to demean the rpm and it would sustain for a while. Now, the engine is at all times surging to the lessening where I cannot drive it for apprehension of damage to the drive train. Any experienced solution?