Electronic Speedometer Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market car that I am ready to steer off a cliff. had a idle surge misery that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After grating 2-3 vary 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 become old he says, it needs a ECU. I did a lot of research on them, and found that its a common pain like 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 on every related parts (tps, maf, iac). $100-200 all period I say yes it complete the dealer for diagnostics.. upon going problems are essentially addendum up. I m hesitant to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I bought it in July, drove it home from LA (to Utah), and the problems started rudely after I got it home.Any further back you can pay for is appreciated. I don't know what else to complete but take on it back up to the dealer. I know I've got the shop foreman energetic upon it at the dealer, but I yet vibes its pushed to the incite as its dated and everyone loses in this situation.

I'm reviewing your question now, and will make known assist later than your answer ASAP. Rgds Greg. What irregularity codes attain you have. Does the engine run in the same way as the MAF disconnected. in the manner of the loud hissing hermetically sealed this could be your problem. This could be a large vacuum leak ,with the MAF similar it is only measuring the ventilate that is getting like the MAF, as a result if the intake manifold is sucking in expose the expose to fuel ratio will be totally out and cause the engine to stal

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