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Thread: Super Sniper Fan Issue

  1. #1

    Default Super Sniper Fan Issue

    I'm running the Super Sniper EFI. Is there a way to set a delay for the cooling fans when starting? When the car is hot and I go to start the fans come on and drop the voltage causing starting issues.

  2. #2
    Join Date
    Dec 2009


    A custom cooling fan output (with an RPM trigger) can be created with the Terminator, HP & Dominator EFI. I don't know if this is an option with the Sniper EFI.
    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


    I spoke to Holley and the Sniper is not capable of doing this. I think my hot start issues are due to more than the fans.

  4. #4


    Holley base calibrations (especially race cam) are way too rich and lead to hot start issues. Hot Cranking Fuel should be around what your idle fuel is. 7-8 lbs/hr is a good starting point.
    69 Camaro
    400 SBC, ProCharger D1SC

  5. #5


    I checked and the Cranking Fuel for between 180°-260° is at 7.5. When I try to start giving it throttle, it does nothing. I've had to change my fan on temps higher so they would shut off and then I can get it to start.

  6. #6


    I've found the issue. My starter was going out. I replaced it with a high torque unit and not it starts no problem.

  7. #7


    Yep, a bad starter will cause a bunch of issues for a Sniper since the bad starter will draw the voltage down really low, and then the Sniper will kick off or restart. Sometimes you can see this in a datalog. The voltage will drop down to 8 volts or less if the starter is hot or is bad.

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