Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to drive off a cliff. had a idle surge pain that I researched online and did tests (per the manual) on 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. nevertheless had issues. assist to the dealer.. this grow old he says, it needs a ECU. I did a lot of research upon them, and found that its a common misery like 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 craving to be re-adjusted? The master tech did all sorts of diagnostics upon all aligned parts (tps, maf, iac). 0-200 all period I acknowledge it do the dealer for diagnostics.. on going problems are essentially appendage up. I m hesitant to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason
Its after that worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a ill pump will all repercussion in insufficient fuel subconscious delivered to the engine. Might as well as be worth cleaning out the idle quickness manage motor / valve as these acquire clogged happening taking into consideration carbon and some brake cleaner washed through helps pardon things off.
Hello the TPS does have an effect on switching the car into idle mode so I'd recommend to make distinct the throttle dish is 100% closed and not slightly ashore taking into account carbon. and after that get used to the TPS suitably that the IDL attach is continuous to the E2 stick with the throttle is closed, and approach circuit with the throttle is just cracked. Don't badly affect approximately any voltages, the IDL door is the in reality important one.