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Thread: Holley 12-303 Fuel Pump

  1. #1
    Join Date
    May 2018
    Location
    Jasper, IN
    Posts
    14

    Default Holley 12-303 Fuel Pump

    I installed a Sniper EFI on a Olds Cutlass with a 455 with a Holley 12-303 fuel pump module. I'm getting the 5 sec 12V on the blue fuel pump wire from the Sniper for fuel pump prime, but the pump doesn't prime. I've checked & rechecked the wiring to the pump, and it's correct. It appears that the fuel pump is a dud. Any suggestions?

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,710

    Default

    If you think the fuel pump is defective, contact Holley Tech Service (LINK).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3
    Join Date
    May 2018
    Location
    Jasper, IN
    Posts
    14

    Default

    I'm actually on hold with Holley tech support. Holley tech said to return it for a replacement.
    Herb
    '66 El Camino, 408LS/T56
    '66 Chevelle, 509/T56
    '63 C10, 454/4L80E

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