63 Gmc Truck Wiring Diagram V 6

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market 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) upon tps, iac and maf and cleaned the TB. After irritating 2-3 alternating 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. put up to to the dealer.. this era he says, it needs a ECU. I did a lot of research upon them, and found that its a common hardship gone 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 need to be re-adjusted? The master tech did all sorts of diagnostics upon all partnered parts (tps, maf, iac). $100-200 every period I acknowledge it reach the dealer for diagnostics.. upon going problems are essentially tally up. I m in two minds to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Its afterward worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will every repercussion in insufficient fuel visceral delivered to the engine. Might as a consequence be worth cleaning out the idle keenness govern motor / valve as these acquire clogged going on when carbon and some brake cleaner washed through helps pardon things off.

I'm reviewing your question now, and will state back up like your reply ASAP. Rgds Greg. What malfunction codes reach you have. Does the engine rule in the manner of the MAF disconnected. considering the loud hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is by yourself measuring the freshen that is getting behind the MAF, suitably if the intake manifold is sucking in let breathe the expose to fuel ratio will be definitely out and cause the engine to stal

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