2002 550 Classic Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to steer off a cliff. had a idle surge trouble that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After aggravating 2-3 swing 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. help to the dealer.. this epoch he says, it needs a ECU. I did a lot of research upon them, and found that its a common hardship 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 compulsion to be re-adjusted? The master tech did all sorts of diagnostics on all amalgamated parts (tps, maf, iac). $100-200 every period I acknowledge it reach the dealer for diagnostics.. upon going problems are in fact toting up up. I m undecided to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Its next 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 every consequences in insufficient fuel innate delivered to the engine. Might plus be worth cleaning out the idle eagerness govern motor / valve as these get clogged happening taking into consideration carbon and some brake cleaner washed through helps release things off.

Hello the TPS does have an effect upon switching the car into idle mode consequently I'd recommend to create positive the throttle plate is 100% closed and not slightly grounded considering carbon. and then become accustomed the TPS hence that the IDL glue is continuous to the E2 glue behind the throttle is closed, and entrance circuit following the throttle is just cracked. Don't distress practically any voltages, the IDL get into is the in fact important one.

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