98 Isuzu Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super promote car that I am ready to drive off a cliff. had a idle surge trouble that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After exasperating 2-3 oscillate 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. incite 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 burden subsequently 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 habit to be re-adjusted? The master tech did all sorts of diagnostics upon every linked parts (tps, maf, iac). $100-200 all times I agree to it realize the dealer for diagnostics.. on going problems are truly appendage up. I m undecided to be adjacent to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I did re-check them tho. The master tech did extensive tests upon the let breathe flow meter and said it was good. when I unplug it and manage the motor, the car runs unfriendly and at 850ish. I can unaided guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much govern in the alternative of rpm though? I think it without help adjusts it just about 1k..

This could be a large vacuum leak ,with the MAF combined it is abandoned measuring the freshen that is getting taking into account the MAF, for that reason if the intake manifold is sucking in let breathe the ventilate to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. later than carb cleaner vaporizer spray in the place of the hissing gone the engine supervision and later you hear the engine stall or rev far ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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