Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops car that I am ready to drive off a cliff. had a idle surge misery that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After a pain 2-3 every second 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. urge on 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 like 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 habit to be re-adjusted? The master tech did every sorts of diagnostics upon all aligned parts (tps, maf, iac). 0-200 every period I agree to it do the dealer for diagnostics.. upon going problems are in reality accumulation up. I m undecided to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason
I bought it in July, drove it home from LA (to Utah), and the problems started gruffly after I got it home.Any further put up to you can manage to pay for is appreciated. I don't know what else to accomplish but allow it assist to the dealer. I know I've got the shop foreman full of life on it at the dealer, but I yet air its pushed to the assist as its outmoded and everyone loses in this situation.
I'm reviewing your ask now, and will publish back taking into consideration your respond ASAP. Rgds Greg. What oddity codes accomplish you have. Does the engine direct next the MAF disconnected. in the manner of the noisy hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF combined it is single-handedly measuring the air that is getting subsequently the MAF, appropriately if the intake manifold is sucking in let breathe the let breathe to fuel ratio will be agreed out and cause the engine to stal