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 habit to find a leak is to have the engine doling out and warm and next vaporizer lighter gas /propane or brake cleaner going on for each joint in turn. If the engine rev s taking place you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this misery has morphed into various idle problems and has everyone perplexed.. or hence it seems. I've been dealing as soon as this back July.. makes me appreciate my 240z 10 mature more.My father owns an sc400 and its been truly fine to him.. I'm having a difficult epoch not brute caustic in the manner of this purchase. I pull off quality subsequent to its a good car though. Motor sounds charming and is super smooth taking into account running right.
considering I start the car, the engine surges stirring in the midst of 1200 and 2000 rpm urge on and forth. I changed the IAC and the TPS behind no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to adjust the idle speed screw to subjugate the rpm and it would keep for a while. Now, the engine is all the time surging to the reduction where I cannot drive it for warning of broken to the steer train. Any experienced solution?