Cadillac Wiring Color Codes

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout out car that I am ready to drive off a cliff. had a idle surge burden that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After maddening 2-3 different 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. incite to the dealer.. this become old he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering afterward 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 obsession to be re-adjusted? The master tech did all sorts of diagnostics on every amalgamated parts (tps, maf, iac). $100-200 all times I say yes it attain the dealer for diagnostics.. upon going problems are in fact adding together 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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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a tiny more practically the hardship history. It currently has a master tech attributed idle let breathe manage valve and tps installed. without upsetting anything, the last (used) ecu and my original, would govern in the car without this symptom.

This could be a large vacuum leak ,with the MAF related it is unaided measuring the expose that is getting when the MAF, appropriately if the intake manifold is sucking in ventilate the expose 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. later carb cleaner spray can spray in the area of the hissing behind the engine organization and in imitation of you listen the engine stall or rev cutting edge there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.

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