Check the hose clips for tightness and inspect the trunking for any cracks or splits and after that all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best mannerism to locate a leak is to have the engine dealing out and hot and later vaporizer lighter gas /propane or brake cleaner just about each joint in turn. If the engine rev s going on you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this burden has morphed into various idle problems and has everyone perplexed.. or for that reason it seems. I've been dealing considering this in the past July.. makes me appreciate my 240z 10 mature more.My dad owns an sc400 and its been in point of fact good to him.. I'm having a difficult era not innate acid bearing in mind this purchase. I get tone considering its a fine car though. Motor sounds lovely and is super smooth like dispensation right.
taking into account I begin the car, the engine surges up between 1200 and 2000 rpm put up to and forth. I changed the IAC and the TPS later no modify in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to become accustomed the idle quickness screw to belittle the rpm and it would maintain for a while. Now, the engine is all the time surging to the dwindling where I cannot steer it for distress signal of damage to the steer train. Any experienced solution?