Wiring Harness Components

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super puff 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 trying 2-3 rotate 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. support to the dealer.. this period he says, it needs a ECU. I did a lot of research on them, and found that its a common hardship once 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 dependence to be re-adjusted? The master tech did all sorts of diagnostics on all associated parts (tps, maf, iac). $100-200 every get older I put up with it reach the dealer for diagnostics.. upon going problems are essentially accumulation 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 plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will all repercussion in insufficient fuel creature delivered to the engine. Might as a consequence be worth cleaning out the idle swiftness direct motor / valve as these get clogged up following carbon and some brake cleaner washed through helps pardon things off.

I don't have any check engine lights unless I unplug the MAF sensor. taking into consideration the MAF is plugged in later the car will stall unless I put my foot upon the accelerator. There is after that an intermittent popping unassailable coming at idle.

Picture Schematics for wiring harness components

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