Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops car that I am ready to steer off a cliff. had a idle surge burden that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After aggravating 2-3 oscillate used IAC s, I took it to the master tech at lexus. He said it was the IAC valve. He tried my used ones.. and finally a rebuilt one. nevertheless had issues. back to the dealer.. this period he says, it needs a ECU. I did a lot of research upon them, and found that its a common burden in imitation of this car.. bought a used one.. more trouble. had the original one rebuilt by a specialist.. and that s where I am at now.. Put it in tonight and the car idles at 2k rpm. Does the TPS infatuation to be re-adjusted? The master tech did all sorts of diagnostics upon every partnered parts (tps, maf, iac). 0-200 every mature I bow to it realize the dealer for diagnostics.. upon going problems are essentially addendum up. I m undecided to touch the tps if he had it dialed. Any insight? Thanks in advance. Jason
I bought it in July, drove it house from LA (to Utah), and the problems started hastily after I got it home.Any other encourage you can pay for is appreciated. I don't know what else to pull off but undertake it assist to the dealer. I know I've got the shop foreman full of zip on it at the dealer, but I nevertheless vibes its pushed to the assist as its dated and everyone loses in this situation.
This could be a large vacuum leak ,with the MAF related it is deserted measuring the let breathe that is getting next the MAF, correspondingly if the intake manifold is sucking in air the freshen to fuel ratio will be entirely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in the same way as carb cleaner vaporizer spray in the place of the hissing subsequent to the engine meting out and taking into consideration you hear the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.