Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public car that I am ready to steer off a cliff. had a idle surge pain that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After maddening 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. nevertheless had issues. assist to the dealer.. this grow old he says, it needs a ECU. I did a lot of research upon them, and found that its a common hardship later than 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 infatuation to be re-adjusted? The master tech did all sorts of diagnostics upon every associated parts (tps, maf, iac). $100-200 every grow old I allow it get the dealer for diagnostics.. on going problems are essentially totaling up. I m in two minds to be next to 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 unexpectedly after I got it home.Any new help you can find the money for is appreciated. I don't know what else to reach but agree to it back up to the dealer. I know I've got the shop foreman functioning upon it at the dealer, but I yet character its pushed to the support as its archaic and everyone loses in this situation.
Hello the TPS does have an effect upon switching the car into idle mode therefore I'd suggest to make sure the throttle plate is 100% closed and not slightly stranded bearing in mind carbon. and then acclimatize the TPS in view of that that the IDL fix is continuous to the E2 fix past the throttle is closed, and contact circuit past the throttle is just cracked. Don't cause problems virtually any voltages, the IDL gate is the in point of fact important one.
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