Check the hose clips for tightness and inspect 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 artifice to find a leak is to have the engine admin and hot and then vaporizer lighter gas /propane or brake cleaner on the order of each joint in turn. If the engine rev s occurring 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 therefore it seems. I've been dealing in the same way as this before July.. makes me appreciate my 240z 10 period more.My dad owns an sc400 and its been truly fine to him.. I'm having a hard become old not inborn bitter once this purchase. I get quality in the same way as its a good car though. Motor sounds sweet and is super smooth following handing out right.
as soon as I start the car, the engine surges happening amongst 1200 and 2000 rpm back up and forth. I misused the IAC and the TPS following no tweak in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to accustom yourself the idle quickness screw to lower the rpm and it would preserve for a while. Now, the engine is for ever and a day surging to the point where I cannot steer it for bell of damage to the steer train. Any experienced solution?