Check the hose clips for tightness and inspect the trunking for any cracks or splits and next all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best artifice to locate a leak is to have the engine doling out and hot and then spray lighter gas /propane or brake cleaner in this area each joint in turn. If the engine rev s up you ve found your leak.
I bought it in July, drove it home from LA (to Utah), and the problems started sharply after I got it home.Any further encourage you can provide is appreciated. I don't know what else to realize but believe it back to the dealer. I know I've got the shop foreman full of zip upon it at the dealer, but I still character its pushed to the encourage as its archaic and everyone loses in this situation.
gone I begin the car, the engine surges happening with 1200 and 2000 rpm help and forth. I changed the IAC and the TPS taking into account no fine-tune in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to acclimatize the idle enthusiasm screw to humiliate the rpm and it would support for a while. Now, the engine is continuously surging to the point where I cannot steer it for alarm clock of broken to the drive train. Any experienced solution?