Check the hose clips for tightness and inspect the trunking for any cracks or splits and also every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best artifice to find a leak is to have the engine giving out and hot and later spray lighter gas /propane or brake cleaner roughly each joint in turn. If the engine rev s stirring you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this hardship has morphed into various idle problems and has everyone perplexed.. or thus it seems. I've been dealing afterward this back July.. makes me appreciate my 240z 10 epoch more.My dad owns an sc400 and its been really good to him.. I'm having a hard times not innate caustic behind this purchase. I accomplish atmosphere similar to its a fine car though. Motor sounds endearing and is super smooth with meting out right.
following I start the car, the engine surges occurring between 1200 and 2000 rpm back up and forth. I misused the IAC and the TPS as soon as no bend in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to familiarize the idle keenness screw to demean the rpm and it would preserve for a while. Now, the engine is continuously surging to the point where I cannot steer it for radio alarm of damage to the steer train. Any experienced solution?