Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce 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 aggravating 2-3 swing 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 era he says, it needs a ECU. I did a lot of research on them, and found that its a common misfortune in the same way as 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 all partnered parts (tps, maf, iac). $100-200 all era I give a positive response it realize the dealer for diagnostics.. upon going problems are in fact addendum up. I m hesitant to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason
I bought it in July, drove it house from LA (to Utah), and the problems started rapidly after I got it home.Any further back up you can have enough money is appreciated. I don’t know what else to realize but consent it assist to the dealer. I know I’ve got the shop foreman functional upon it at the dealer, but I nevertheless air its pushed to the help as its antiquated and everyone loses in this situation.
Hello the TPS does have an effect on switching the car into idle mode thus I’d suggest to make positive the throttle dish is 100% closed and not slightly grounded subsequent to carbon. and subsequently get used to the TPS fittingly that the IDL fasten is continuous to the E2 stick later the throttle is closed, and retrieve circuit with the throttle is just cracked. Don’t upset about any voltages, the IDL way in is the essentially important one.
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