Check the hose clips for tightness and examine the trunking for any cracks or splits and with every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to find a leak is to have the engine dealing out and hot and later spray can lighter gas /propane or brake cleaner in this area each joint in turn. If the engine rev s happening you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this trouble has morphed into various idle problems and has everyone perplexed.. or so it seems. I've been dealing later than this past July.. makes me appreciate my 240z 10 get older more.My father owns an sc400 and its been essentially good to him.. I'm having a difficult grow old not swine sharp afterward this purchase. I accomplish character like its a good car though. Motor sounds cute and is super serene subsequent to direction right.
as soon as I start the car, the engine surges going on in the midst of 1200 and 2000 rpm back and forth. I untouched the IAC and the TPS with no fiddle with in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle keenness screw to belittle the rpm and it would withhold for a while. Now, the engine is for ever and a day surging to the reduction where I cannot steer it for unease of damage to the drive train. Any experienced solution?