Buick Grand National Fuse Box Wiring

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout out car that I am ready to drive off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After exasperating 2-3 vary 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. support to the dealer.. this get older he says, it needs a ECU. I did a lot of research upon them, and found that its a common pain next 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 need to be re-adjusted? The master tech did every sorts of diagnostics upon all united parts (tps, maf, iac). $100-200 every time I admit it pull off the dealer for diagnostics.. on going problems are essentially count up. I m in two minds to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I started the car up this morning, it starts in the works and runs at 1750 and within a minute or therefore climbs on top of 2500.. It is paperwork serene though, just way superior than it should be. I in addition to checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it assist to exactly where it was. No vacuum leak sounds and all contacts verified. I character fine virtually them as I've been in there a bunch of times..

Hello the TPS does have an effect upon switching the car into idle mode correspondingly I'd recommend to make definite the throttle dish is 100% closed and not slightly beached gone carbon. and later adapt the TPS fittingly that the IDL fix is continuous to the E2 fasten as soon as the throttle is closed, and read circuit as soon as the throttle is just cracked. Don't upset very nearly any voltages, the IDL open is the truly important one.

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