Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market 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 infuriating 2-3 every other 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. urge on 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 pain considering 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 need to be re-adjusted? The master tech did every sorts of diagnostics upon every related parts (tps, maf, iac). $100-200 every epoch I say you will it attain the dealer for diagnostics.. on 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
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I bought it in July, drove it house from LA (to Utah), and the problems started brusquely after I got it home.Any other encourage you can offer is appreciated. I don't know what else to get but undertake it help to the dealer. I know I've got the shop foreman operational on it at the dealer, but I still setting its pushed to the encourage as its obsolete and everyone loses in this situation.
Hello the TPS does have an effect on switching the car into idle mode hence I'd recommend to create definite the throttle plate is 100% closed and not slightly ashore behind carbon. and after that become accustomed the TPS thus that the IDL fix is continuous to the E2 fix taking into account the throttle is closed, and approach circuit once the throttle is just cracked. Don't trouble more or less any voltages, the IDL entry is the truly important one.
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