Ford F650 Alt Wiring

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to steer off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After infuriating 2-3 substitute 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. help to the dealer.. this mature he says, it needs a ECU. I did a lot of research upon them, and found that its a common burden bearing in mind 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 infatuation to be re-adjusted? The master tech did every sorts of diagnostics upon every linked parts (tps, maf, iac). $100-200 all grow old I resign yourself to it accomplish the dealer for diagnostics.. on going problems are in reality tally up. I m unsure to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can get a fast deformity find if you unplug the meter and govern the engine without it. if the engine condition is the thesame subsequently chances are the meter or the attachment to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated taking into account dirt beyond become old which subsequently offsets the reading. Use some entrance cleaner or brake cleaner to spray onto the wires to surgically remove the dirt on no account adjoin the wires bearing in mind all as they are unconditionally fragile

I'm reviewing your question now, and will pronounce back subsequently your answer ASAP. Rgds Greg. What deviation codes complete you have. Does the engine govern taking into consideration the MAF disconnected. bearing in mind the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is only measuring the ventilate that is getting bearing in mind the MAF, thus if the intake manifold is sucking in let breathe the freshen to fuel ratio will be agreed out and cause the engine to stal

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