Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super spread around car that I am ready to steer off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After frustrating 2-3 substitute 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. still 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 trouble similar to this car.. bought a used one.. more trouble. had the indigenous 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 all sorts of diagnostics upon every partnered parts (tps, maf, iac). 0-200 every get older I take it complete the dealer for diagnostics.. upon going problems are really adding together up. I m of two minds to lie alongside 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 snappishly after I got it home.Any supplementary help you can come up with the money for is appreciated. I don't know what else to reach but say you will it incite to the dealer. I know I've got the shop foreman energetic on it at the dealer, but I still vibes its pushed to the back as its out of date and everyone loses in this situation.
Hello the TPS does have an effect on switching the car into idle mode so I'd recommend to create determined the throttle plate is 100% closed and not slightly high and dry taking into account carbon. and later familiarize the TPS therefore that the IDL pin is continuous to the E2 fix bearing in mind the throttle is closed, and right of entry circuit when the throttle is just cracked. Don't upset approximately any voltages, the IDL entre is the in point of fact important one.