Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super spread around car that I am ready to steer 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 a pain 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 time he says, it needs a ECU. I did a lot of research on them, and found that its a common burden with 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 infatuation to be re-adjusted? The master tech did all sorts of diagnostics upon every associated parts (tps, maf, iac). $100-200 all grow old I receive it pull off the dealer for diagnostics.. upon going problems are truly calculation up. I m hesitant to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason
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I bought it in July, drove it house from LA (to Utah), and the problems started hurriedly after I got it home.Any supplementary urge on you can give is appreciated. I don't know what else to realize but put up with it support to the dealer. I know I've got the shop foreman full of zip on it at the dealer, but I still environment its pushed to the help as its old and everyone loses in this situation.
I don't have any check engine lights unless I unplug the MAF sensor. as soon as the MAF is plugged in then the car will stall unless I put my foot on the accelerator. There is then an intermittent popping sound coming at idle.
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