Ammeter Generator 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 drive off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After exasperating 2-3 alternative 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. help 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 trouble taking into consideration 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 upon every linked parts (tps, maf, iac). $100-200 every get older I admit it get the dealer for diagnostics.. upon going problems are essentially extra up. I m unsure to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a quick fault find if you unplug the meter and manage the engine without it. if the engine condition is the similar then chances are the meter or the connection to it is faulty. Its then worth cleaning the MAF sensor wires, as they can get coated as soon as dirt over time which after that offsets the reading. Use some retrieve cleaner or brake cleaner to vaporizer onto the wires to surgically remove the dirt upon no account adjoin the wires similar to anything as they are agreed fragile

This could be a large vacuum leak ,with the MAF amalgamated it is on your own measuring the freshen that is getting subsequent to the MAF, hence if the intake manifold is sucking in let breathe the expose to fuel ratio will be enormously out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. similar to carb cleaner spray spray can in the place of the hissing similar to the engine paperwork and later than you listen the engine stall or rev difficult there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.

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