77 Ford F150 Engine Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout out car that I am ready to drive off a cliff. had a idle surge burden that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After bothersome 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. nevertheless had issues. put up to 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 hardship following 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 compulsion to be re-adjusted? The master tech did every sorts of diagnostics upon every combined parts (tps, maf, iac). $100-200 every times I resign yourself to it do the dealer for diagnostics.. on going problems are essentially surcharge up. I m hesitant to touch 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 realize a fast oddity find if you unplug the meter and control the engine without it. if the engine condition is the same later chances are the meter or the link to it is faulty. Its next worth cleaning the MAF sensor wires, as they can acquire coated taking into consideration dirt greater than era which next offsets the reading. Use some admittance cleaner or brake cleaner to spray onto the wires to cut off the dirt on no account adjoin the wires subsequent to all as they are unconditionally fragile

Hello the TPS does have an effect upon switching the car into idle mode appropriately I'd suggest to make definite the throttle dish is 100% closed and not slightly stuck later carbon. and then get used to the TPS for that reason that the IDL glue is continuous to the E2 fix once the throttle is closed, and get into circuit following the throttle is just cracked. Don't distress virtually any voltages, the IDL log on is the in fact important one.

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