# Fuel pump voltage

**URL:** <https://community.cartalk.com/t/fuel-pump-voltage/13859>\
**Category:** Maintenance/Repairs\
**Created:** [May 10, 2008, 7:50pm UTC](https://community.cartalk.com/t/fuel-pump-voltage/13859 "2008-05-10T19:50:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jgreen123](https://avatars.discourse-cdn.com/v4/letter/j/fbc32d/32.png) [@jgreen123](https://community.cartalk.com/u/jgreen123)\
**Post date:** [May 10, 2008, 7:50pm UTC](https://community.cartalk.com/t/fuel-pump-voltage/13859/1 "2008-05-10T19:50:33Z")

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i have a 1974 merz 450 sl which the fuel pump went out i replace it with a new one but now i dont get any current to the pump. i replace the fuel pump relay but still no power to the pump all fuses are good. but i heard that the merz is ground sentitive what ever that mean. help i got to get this thing running before it rust to death. thank you

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [May 11, 2008, 1:40am UTC](https://community.cartalk.com/t/fuel-pump-voltage/13859/2 "2008-05-11T01:40:51Z")

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You need to check for voltage using a test light probe at the places you mentioned.