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Changed fuel pump, now gas gauge doesn't work???

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Old 07-24-2010, 10:17 PM   #1
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Changed fuel pump, now gas gauge doesn't work???

Hello everyone,

I own a 1996 s10 4.3l with 183,000 miles.

Recently the fuel pump went out and my father and I replaced it. Upon replacing it (3 times to find one that wasn't defective) we blew two relays. The relays were replaced, and all connections on the harness were checked with a light tester to make sure they all had juice. After all the connections looked good, everything was put back together to find that the gas gauge doesn't work anymore. It has buried itself to the extreme right (full) position. We are wondering if anyone has any insight as to why this may be.

Wondering if anyone can help with this?

Thanks in advance.
Old 07-25-2010, 06:14 AM   #2
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Re: Changed fuel pump, now gas gauge doesn't work???

When the gauge is pinned to the right (over full) there is an open circuit between the gauge and the sender. If it worked before the new pump then either the connection at the new pump is bad or the new sender is bad. The sender is extremely fragile, if the float had gotten cocked it may have bent the contacts on the card. Most likely you will have to pull the tank again and check it.

Ben
Old 07-25-2010, 10:41 AM   #3
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Re: Changed fuel pump, now gas gauge doesn't work???

...Or a ground wire is off somewhere.
Old 07-25-2010, 12:22 PM   #4
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Re: Changed fuel pump, now gas gauge doesn't work???

i say check the float in the tank...remove pump and plug it all up and move the float and see if it changes on the dash
Old 07-25-2010, 09:39 PM   #5
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Re: Changed fuel pump, now gas gauge doesn't work???

Thank y'all for the responses. Pump will be removed this week and checked.
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