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  1. #1

    Unhappy new fuel pump noise

    hi guys i have a 99 suburban and i just changed the fuel pump oem and it runes great but their is a loud grinding humming like noise while it running coming from the tank. Did i get a bad pump? thanks ....tony

  2. #2

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    some pumps are louder than others. the Bosh HP replacement i got is so quite you almost think it was not running. the OEM one in the other truck is so loud you think it was going to explode. test the fuel pressure and if within spec ignore the sound.....mike
    Michael Collins
    1993 4X4 Suburban
    many other toys as well

  3. #3

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    Quote Originally Posted by collinsperformance View Post
    some pumps are louder than others. the Bosh HP replacement i got is so quite you almost think it was not running. the OEM one in the other truck is so loud you think it was going to explode. test the fuel pressure and if within spec ignore the sound.....mike
    thanks man psi is good so i guess fu@$t it what noise right lol.........tony

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