Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super promote car that I am ready to drive 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 aggravating 2-3 alternative 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. put up to to the dealer.. this period he says, it needs a ECU. I did a lot of research upon them, and found that its a common pain later than 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 dependence to be re-adjusted? The master tech did every sorts of diagnostics upon every partnered parts (tps, maf, iac). 0-200 every times I take it attain the dealer for diagnostics.. upon going problems are in point of fact adjunct up. I m unsure to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason
I bought it in July, drove it home from LA (to Utah), and the problems started tersely after I got it home.Any supplementary assist you can have the funds for is appreciated. I don't know what else to attain but put up with it back up to the dealer. I know I've got the shop foreman operating upon it at the dealer, but I yet air its pushed to the support as its archaic and everyone loses in this situation.
Hello the TPS does have an effect on switching the car into idle mode hence I'd recommend to create distinct the throttle dish is 100% closed and not slightly ashore gone carbon. and then adapt the TPS thus that the IDL glue is continuous to the E2 glue in the same way as the throttle is closed, and door circuit gone the throttle is just cracked. Don't badly affect virtually any voltages, the IDL way in is the truly important one.