1999 F150 Fuse Box Identification

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to steer off a cliff. had a idle surge problem that I researched online and did tests (per the manual) upon 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. support to the dealer.. this become old he says, it needs a ECU. I did a lot of research upon them, and found that its a common burden past 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 dependence to be re-adjusted? The master tech did all sorts of diagnostics on all linked parts (tps, maf, iac). $100-200 every epoch I acknowledge it complete the dealer for diagnostics.. on going problems are really adding up. I m undecided to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast fault find if you unplug the meter and govern the engine without it. if the engine condition is the similar next chances are the meter or the connection to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated subsequently dirt beyond era which subsequently offsets the reading. Use some get into cleaner or brake cleaner to spray onto the wires to sever the dirt upon no account be next to the wires in the manner of all as they are extremely fragile

This could be a large vacuum leak ,with the MAF joined it is isolated measuring the air that is getting subsequently the MAF, so if the intake manifold is sucking in expose the air to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. like carb cleaner spray can vaporizer in the area of the hissing behind the engine dealing out and afterward you hear the engine stall or rev far along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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