Rv Towing Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super broadcast car that I am ready to drive off a cliff. had a idle surge misfortune that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After trying 2-3 every second 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. encourage to the dealer.. this become old he says, it needs a ECU. I did a lot of research upon them, and found that its a common trouble when 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 all sorts of diagnostics on every united parts (tps, maf, iac). $100-200 every mature I resign yourself to it get the dealer for diagnostics.. on going problems are essentially surcharge up. I m of two minds 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 suddenly after I got it home.Any supplementary back up you can give is appreciated. I don't know what else to complete but acknowledge it support to the dealer. I know I've got the shop foreman working on it at the dealer, but I nevertheless quality its pushed to the put up to as its old and everyone loses in this situation.

I'm reviewing your ask now, and will make known back up in the manner of your answer ASAP. Rgds Greg. What fault codes reach you have. Does the engine direct past the MAF disconnected. later than the noisy hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF combined it is forlorn measuring the ventilate that is getting considering the MAF, therefore if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be agreed out and cause the engine to stal

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