Results 1 to 7 of 7

Thread: Fuel pump relay on a datalog?

  1. #1

    Default Fuel pump relay on a datalog?

    Is there any way to monitor the signal to the fuel pump relay on a datalog? I’m losing fuel pressure during a run and want to see if the signal is present. Not sure if there’s an "output" or a diagnostic channel I can select from the graph setup.
    1932 Ford 3 Window, Injected SBC
    1970 Nova 5.3L, S475 Turbo, 275 Drag Radial

  2. #2
    Join Date
    Nov 2014
    Location
    Ont. Canada
    Posts
    1,240

    Default

    Create a custom Input to monitor fuel pump voltage.

  3. #3

    Default

    Good idea!!! I’ll do it for both pumps. At least it’ll tell me if I’m powering the relays.
    Last edited by 3 window; 05-13-2019 at 08:48 PM.

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,578

    Default

    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2700 RPM converter, 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.

  5. #5

    Default

    Thanks again.

  6. #6

    Default

    UPDATE: Ended up having a cavitation problem with the surge tank due to poor design for the return. Replumbed and we’re all good. Thanks for the ideas to monitor pump voltages. Next rainy day’s project.

  7. #7
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,578

    Default

    Thanks for the good update.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2700 RPM converter, 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.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us