Vespa P125x Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public car that I am ready to steer off a cliff. had a idle surge pain that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After bothersome 2-3 every second 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. help to the dealer.. this grow old he says, it needs a ECU. I did a lot of research upon them, and found that its a common burden when this car.. bought a used one.. more trouble. had the native 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 all associated parts (tps, maf, iac). $100-200 all become old I acknowledge it do the dealer for diagnostics.. on going problems are in fact toting up up. I m of two minds 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 on the let breathe flow meter and said it was good. taking into account I unplug it and manage the motor, the car runs rasping and at 850ish. I can without help guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much manage in the stand-in of rpm though? I think it and no-one else adjusts it as regards 1k..

This could be a large vacuum leak ,with the MAF amalgamated it is unaided measuring the freshen that is getting considering the MAF, consequently if the intake manifold is sucking in freshen the air to fuel ratio will be certainly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. past carb cleaner spray vaporizer in the place of the hissing next the engine meting out and subsequently you hear the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.

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