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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 03-05-2005, 02:29 PM   #1 (permalink)
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My car will not start. It is definitly not getting gas to the engine and the fule pump is not making any noise. How do i tell if the problem is in the pump or in the relay?

I just changed the o2 sensor.. could that have anything to do with it?
the ignition was left on until the battery went dead (stupid i know, but it happend )



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Old 03-05-2005, 02:37 PM   #2 (permalink)
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get a fuel pump pressure tester... that will show you if you have pressure or not even if your relay went bad.
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Old 03-05-2005, 03:19 PM   #3 (permalink)
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Bear is an unknown quantity at this point
If you do not hear the fuel pump buzzing I would suspect that, however you could disconnect fuel line at the filter, put line in a container and have someone turn on ignition and see if she pushes any fuel. Be careful and quick if you do this.
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Old 03-05-2005, 03:45 PM   #4 (permalink)
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With a voltmeter test to see if you have 12 volts at the fuel pump. If yes your fuel pump is bad, if no your relay is bad.
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