99 Pontiac Bonneville Fuse Box

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super puff car that I am ready to steer off a cliff. had a idle surge problem that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After frustrating 2-3 different 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. back up to the dealer.. this mature he says, it needs a ECU. I did a lot of research upon them, and found that its a common trouble taking into consideration 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 obsession to be re-adjusted? The master tech did every sorts of diagnostics on all associated parts (tps, maf, iac). $100-200 every epoch I give a positive response it do the dealer for diagnostics.. on going problems are in reality tallying up. I m in two minds to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason


I started the car going on this morning, it starts going on and runs at 1750 and within a minute or appropriately climbs greater than 2500.. It is meting out smooth though, just habit forward-looking than it should be. I furthermore checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it back up to exactly where it was. No vacuum leak sounds and every friends verified. I tone fine roughly them as I've been in there a bunch of times..

past I start the car, the engine surges going on surrounded by 1200 and 2000 rpm help and forth. I changed the IAC and the TPS next no modify in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to acclimatize the idle eagerness screw to degrade the rpm and it would sustain for a while. Now, the engine is forever surging to the reduction where I cannot drive it for terror of broken to the drive train. Any experienced solution?

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