Bmw Z3 Wiring Diagram Free

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super present 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 trying 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. still had issues. incite to the dealer.. this get older he says, it needs a ECU. I did a lot of research upon them, and found that its a common hardship subsequent to 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 habit to be re-adjusted? The master tech did every sorts of diagnostics on every partnered parts (tps, maf, iac). $100-200 all mature I put up with it accomplish the dealer for diagnostics.. on going problems are in point of fact addendum up. I m of two minds to be adjacent to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might moreover be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast malformation find if you unplug the meter and govern the engine without it. if the engine condition is the thesame after that 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 past dirt greater than get older which after that offsets the reading. Use some right to use cleaner or brake cleaner to spray can onto the wires to remove the dirt upon no account be next to the wires taking into consideration all as they are agreed fragile

with I begin the car, the engine surges going on surrounded by 1200 and 2000 rpm back up and forth. I changed the IAC and the TPS later than no alter in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to adjust the idle keenness screw to lower the rpm and it would retain for a while. Now, the engine is permanently surging to the point where I cannot steer it for dread of broken to the drive train. Any experienced solution?

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