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    1. 08-30-2025 #1
      68-vert
      68-vert is offline Registered User
      Join Date
      Jul 2025
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      4

      electric fuel pump

      I think my electric fuel pump has failed.
      1-I don't hear the pump when I turn the key on.
      2- The fuse is not blown.
      3- My optima trunk mounted battery has 12.43 volts.
      4- I don't see fuel entering the FIT throttle body.

      What am I missing ? Is there something else I need to check ?

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    3. 08-30-2025 #2
      dhutton's Avatar
      dhutton
      dhutton is offline Registered User
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      Nov 2006
      Location
      Mountain Springs, Texas
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      Measure the voltage at the pump when you turn the key on. Sounds like you have EFI so it could be ECM or fuel pump relay etc
      1969 Camaro - LSA 6L90E AME sub/IRS
      1957 Buick Estate Wagon
      1959 El Camino - Ironworks frame
      1956 Cameo - full C5 suspension/drivetrain
      1959 Apache Fleetside
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    4. 09-01-2025 #3
      68-vert
      68-vert is offline Registered User
      Join Date
      Jul 2025
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      4
      Quote Originally Posted by dhutton View Post
      Measure the voltage at the pump when you turn the key on. Sounds like you have EFI so it could be ECM or fuel pump relay etc
      Thank you, I'll let you know what I find. After 10 years this is the first issue I've had so I'm lucky I guess.
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