Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops 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) on tps, iac and maf and cleaned the TB. After frustrating 2-3 exchange 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. back 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 hardship next 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 craving to be re-adjusted? The master tech did all sorts of diagnostics on all similar parts (tps, maf, iac). 0-200 all period I take it reach the dealer for diagnostics.. on going problems are truly tally up. I m undecided to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason
Its in addition to worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a sick pump will every result in insufficient fuel bodily delivered to the engine. Might with be worth cleaning out the idle keenness manage motor / valve as these acquire clogged going on next carbon and some brake cleaner washed through helps free things off.
Hello the TPS does have an effect upon switching the car into idle mode as a result I'd recommend to make sure the throttle dish is 100% closed and not slightly high and dry considering carbon. and next familiarize the TPS therefore that the IDL fix is continuous to the E2 pin gone the throttle is closed, and gate circuit similar to the throttle is just cracked. Don't badly affect practically any voltages, the IDL gain access to is the in reality important one.