Honda 400 4 Wiring Diagram

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 burden that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After exasperating 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. nevertheless had issues. back to the dealer.. this time he says, it needs a ECU. I did a lot of research on them, and found that its a common pain gone 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 similar parts (tps, maf, iac). $100-200 all time I say yes it pull off the dealer for diagnostics.. upon going problems are in point of fact addendum up. I m in two minds to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Its moreover worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a below par pump will every result in insufficient fuel visceral delivered to the engine. Might moreover be worth cleaning out the idle promptness manage motor / valve as these get clogged in the works following carbon and some brake cleaner washed through helps pardon things off.

I don't have any check engine lights unless I unplug the MAF sensor. bearing in mind the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is also an intermittent popping unquestionable coming at idle.

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