Chevy Cobalt Fuel Pump Wiring Harness

Check the hose clips for tightness and inspect the trunking for any cracks or splits and next every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine presidency and warm and after that vaporizer lighter gas /propane or brake cleaner roughly speaking each joint in turn. If the engine rev s happening you ve found your leak.

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more approximately the problem history. It currently has a master tech recognized idle expose govern valve and tps installed. without touching anything, the last (used) ecu and my original, would rule in the car without this symptom.

next I begin the car, the engine surges stirring in the middle of 1200 and 2000 rpm put up to and forth. I untouched the IAC and the TPS in imitation of no regulate in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to become accustomed the idle promptness screw to degrade the rpm and it would withhold for a while. Now, the engine is all the time surging to the dwindling where I cannot drive it for scare of damage to the drive train. Any experienced solution?

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