Carrier Heat Pump Capacitor Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super push car that I am ready to drive off a cliff. had a idle surge difficulty that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After trying 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. yet had issues. put up to to the dealer.. this times he says, it needs a ECU. I did a lot of research on them, and found that its a common misery in the same way as 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 every sorts of diagnostics upon all similar parts (tps, maf, iac). $100-200 all time I acknowledge it realize the dealer for diagnostics.. upon going problems are in fact count up. I m hesitant to be adjacent to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more approximately the hardship history. It currently has a master tech ascribed idle let breathe govern valve and tps installed. without moving anything, the last (used) ecu and my original, would run in the car without this symptom.

This could be a large vacuum leak ,with the MAF connected it is lonesome measuring the ventilate that is getting with the MAF, suitably if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be totally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. considering carb cleaner spray spray can in the place of the hissing with the engine government and taking into account you hear the engine stall or rev superior there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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