Check the hose clips for tightness and inspect the trunking for any cracks or splits and along with every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best mannerism to find a leak is to have the engine organization and hot and subsequently spray can lighter gas /propane or brake cleaner more or less 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 difficulty has morphed into various idle problems and has everyone perplexed.. or thus it seems. I've been dealing taking into account this back July.. makes me appreciate my 240z 10 era more.My dad owns an sc400 and its been essentially fine to him.. I'm having a difficult era not creature bitter as soon as this purchase. I get setting following its a fine car though. Motor sounds lovable and is super smooth later dealing out right.
behind I begin the car, the engine surges happening amid 1200 and 2000 rpm incite and forth. I distorted the IAC and the TPS next no amend in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to accustom yourself the idle rapidity screw to demean the rpm and it would hold for a while. Now, the engine is until the end of time surging to the point where I cannot drive it for dread of damage to the steer train. Any experienced solution?