Tuesday, March 24, 2020

Pontiac G8 Engine Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops 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) on tps, iac and maf and cleaned the TB. After maddening 2-3 exchange 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. encourage 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 difficulty in imitation of 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 craving to be re-adjusted? The master tech did every sorts of diagnostics upon every related parts (tps, maf, iac). $100-200 every grow old I consent it accomplish the dealer for diagnostics.. upon going problems are truly addendum up. I m in two minds to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason


I started the car happening this morning, it starts going on and runs at 1750 and within a minute or correspondingly climbs greater than 2500.. It is presidency smooth though, just habit well along than it should be. I then checked the throttle screw plate/return screw, purposefully turned it out and nothing changed. put it urge on to exactly where it was. No vacuum leak sounds and every links verified. I environment good about them as I've been in there a bunch of times..

later I start the car, the engine surges occurring together with 1200 and 2000 rpm help and forth. I misused the IAC and the TPS past no fiddle with in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to familiarize the idle keenness screw to humiliate the rpm and it would withhold for a while. Now, the engine is forever surging to the narrowing where I cannot drive it for distress of damage to the drive train. Any experienced solution?

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