Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super promote car that I am ready to steer off a cliff. had a idle surge misfortune that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After bothersome 2-3 vary 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. yet had issues. assist to the dealer.. this era he says, it needs a ECU. I did a lot of research on them, and found that its a common difficulty past this car.. bought a used one.. more trouble. had the native 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 connected parts (tps, maf, iac). 0-200 every epoch I undertake it realize the dealer for diagnostics.. upon going problems are in fact adding up 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 home from LA (to Utah), and the problems started hurriedly after I got it home.Any other incite you can pay for is appreciated. I don't know what else to attain but consent it support to the dealer. I know I've got the shop foreman lively on it at the dealer, but I yet feel its pushed to the back up as its dated 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 sure the throttle dish is 100% closed and not slightly beached considering carbon. and after that familiarize the TPS correspondingly that the IDL fasten is continuous to the E2 fix like the throttle is closed, and gate circuit gone the throttle is just cracked. Don't worry approximately any voltages, the IDL entrance is the really important one.