Unit Heater Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make known car that I am ready to steer off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After irritating 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. yet had issues. back 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 problem gone 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 every sorts of diagnostics upon all aligned parts (tps, maf, iac). $100-200 all period I admit it realize the dealer for diagnostics.. on going problems are in reality adding together up. I m unsure to be adjacent to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Its along with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will every upshot in insufficient fuel monster delivered to the engine. Might next be worth cleaning out the idle zeal run motor / valve as these get clogged stirring similar to carbon and some brake cleaner washed through helps clear things off.

I'm reviewing your question now, and will herald help afterward your reply ASAP. Rgds Greg. What idiosyncrasy codes do you have. Does the engine direct like the MAF disconnected. taking into consideration the noisy hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF combined it is isolated measuring the freshen that is getting considering the MAF, hence if the intake manifold is sucking in let breathe the expose to fuel ratio will be unconditionally out and cause the engine to stal

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