4 Way Tele Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops car that I am ready to steer 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 trying 2-3 interchange 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. urge on to the dealer.. this times he says, it needs a ECU. I did a lot of research on them, and found that its a common hardship afterward this car.. bought a used one.. more trouble. had the indigenous 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 all sorts of diagnostics on all united parts (tps, maf, iac). $100-200 all get older I give a positive response it reach the dealer for diagnostics.. on going problems are essentially additive up. I m hesitant to adjoin 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 reach a fast irregularity find if you unplug the meter and manage the engine without it. if the engine condition is the similar later chances are the meter or the connection to it is faulty. Its with worth cleaning the MAF sensor wires, as they can acquire coated taking into account dirt greater than times which next offsets the reading. Use some gate cleaner or brake cleaner to spray can onto the wires to sever the dirt upon no account be adjacent to the wires in imitation of anything as they are unconditionally fragile

Hello the TPS does have an effect upon switching the car into idle mode appropriately I'd recommend to make definite the throttle plate is 100% closed and not slightly beached considering carbon. and subsequently acclimatize the TPS in view of that that the IDL stick is continuous to the E2 fasten later the throttle is closed, and get into circuit later than the throttle is just cracked. Don't make miserable approximately any voltages, the IDL gate is the truly important one.

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