Non Pontiac Motors in Pontiacs includes factory 403,305,350 Chevy, Buick V6,
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Old 10-19-2013, 12:41 PM
kainedogg's Avatar
kainedogg kainedogg is offline
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Join Date: Apr 2011
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Default Fuel pump not coming on anymore.

Car ran fine for a few days. Went to start it up and it's a no go. Pump runs when given a direct 12v source.

FUEL RELAY connector: I have constant 12v power to pin 87 on the relay side so that means I don't need to check for a fuse right? However when I turn the key on, pin 85 that should be powered by the ecm does not power up. That means the ecm is not sending a signal right? What do I check to make sure its not the ecm...or better yet what do I check next?

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Old 12-07-2013, 08:14 AM
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Ollie Ollie is offline
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Check for loose connections or grounds.

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