Question about 2000 Pontiac Bonneville

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Changed fuel pump. still won't start. acts like

Changed fuel pump. still won't start. acts like it has a major short somewhere. Just died when it quit.

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You need to start with some basic testing before you change any parts. First check and see if the vehicle has spark on all cylinder, second check fuel pressure on the vehicle with a fuel pressure tester. Does it pass vehicle pressure spec. If not pump or electrical wiring/ connector is faulty. Third if all of the above is good test fuel injectors for pulse with a noid light or test light. Need more info on vehicle make and model engine size and what you have tested so far with findings.
For a quick test you can spray small amount of carb clean down throttle body and see if the vehicle will start and run off from the carb clean, if it does you know you have a fuel related problem. If not you are looking down the wrong path.

Posted on Jul 21, 2010

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Posted on Jan 02, 2017

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