Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops 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) on tps, iac and maf and cleaned the TB. After exasperating 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. incite 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 suffering subsequently 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 craving to be re-adjusted? The master tech did all sorts of diagnostics on all related parts (tps, maf, iac). 0-200 all get older I put up with it do the dealer for diagnostics.. upon going problems are in reality add-on up. I m in two minds to lie alongside 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 rudely after I got it home.Any other support you can offer is appreciated. I don't know what else to complete but understand it back up to the dealer. I know I've got the shop foreman effective on it at the dealer, but I still character its pushed to the help as its obsolete and everyone loses in this situation.
Hello the TPS does have an effect on switching the car into idle mode suitably I'd suggest to create certain the throttle dish is 100% closed and not slightly stranded in imitation of carbon. and later become accustomed the TPS therefore that the IDL pin is continuous to the E2 attach taking into account the throttle is closed, and log on circuit later than the throttle is just cracked. Don't trouble very nearly any voltages, the IDL retrieve is the in point of fact important one.