91 F150 Radio Wiring

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize 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) upon tps, iac and maf and cleaned the TB. After maddening 2-3 swap 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. assist to the dealer.. this era he says, it needs a ECU. I did a lot of research on them, and found that its a common misfortune gone this car.. bought a used one.. more trouble. had the original 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 upon every connected parts (tps, maf, iac). $100-200 every era I acknowledge it realize the dealer for diagnostics.. on going problems are in fact supplement 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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Might as well as be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast idiosyncrasy locate if you unplug the meter and manage the engine without it. if the engine condition is the thesame next chances are the meter or the relationship to it is faulty. Its after that worth cleaning the MAF sensor wires, as they can get coated in the manner of dirt exceeding era which subsequently offsets the reading. Use some gain access to cleaner or brake cleaner to spray can onto the wires to sever the dirt on no account touch the wires similar to whatever as they are no question fragile

past I begin the car, the engine surges in the works along with 1200 and 2000 rpm assist and forth. I distorted the IAC and the TPS subsequent to no fine-tune in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to acclimatize the idle zeal screw to degrade the rpm and it would support for a while. Now, the engine is until the end of time surging to the point where I cannot drive it for distress signal of broken to the drive train. Any experienced solution?

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