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dan
dan 9/25/2012
1996 Chevrolet Lumina APV Base 6Cyl3.4L - Engine
no power at fuelpump
there is power on sending unit but none for fuel pump have checked all fuses and there is 4 relays behind passenger side headlight but dont know which 1 goes to fuel pump owner sold it to me like this i was expecting an easy fix
3 Answers
  • clayton
    clayton 9/25/2012
    in the fuse box under hood there should be a fuse just for fuel which is a relay a 4 pin just swap it with ac relay se if thats work.let me know
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    clayton
    dan 9/25/2012
    there is no fuse box under hood just those 4 relays and there not marked
    clayton
    clayton 9/25/2012
    ok did u check the fuse panel under the dash
  • dan
    dan 9/25/2012
    yes and fuse is good got me stumped
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  • HouseCallAuto
    HouseCallAuto 9/25/2012
    1. Check for power on terminal 87 of the fuel pump relay socket in the under-hood electrical center. If none, check the fuel pump fuse. The fuel pump relay is the 3rd one over from the end of the radiator. wire colors are Orange, Gray, Green / White, Black / White this is the only relay with these color wires.Update the post with further details after you check.

    2. Check for power on terminal 86 for 2 seconds when the key is cycled on (the key must be off for 10 seconds first).

    3. Apply 12 volts to terminal 30 with a fused jumper wire. This should energize the fuel pump.

    4. Check for ground on terminal 85. If there is no ground, check the ground in the engine compartment, left of the starter, along with battery ground.

    5. If all of the above tests are good, replace the fuel pump relay.

    The pin numbers are stamped into the relay. The connector by the fuel tank is known for corrosion issues.
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