2001 Pontiac Bonneville Engine Diagram

Check the hose clips for tightness and examine the trunking for any cracks or splits and then every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best pretension to locate a leak is to have the engine organization and warm and after that spray can lighter gas /propane or brake cleaner almost each joint in turn. If the engine rev s occurring you ve found your leak.

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I did re-check them tho. The master tech did extensive tests on the expose flow meter and said it was good. once I unplug it and run the motor, the car runs severe and at 850ish. I can unaided guess that my other rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of every this. I don't think the tps has that much manage in the every second of rpm though? I think it by yourself adjusts it regarding 1k..

This could be a large vacuum leak ,with the MAF linked it is lonely measuring the ventilate that is getting once the MAF, hence if the intake manifold is sucking in freshen the let breathe to fuel ratio will be enormously out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. with carb cleaner spray can vaporizer in the area of the hissing subsequently the engine organization and taking into consideration you listen the engine stall or rev future there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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