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VATS Cranking Fuel Enable Signal

The final piece of VATS is the Cranking Fuel Enable signal.

There are two ways to eliminate this last part. Either get a new ECM chip burned with VATS eliminated from the programming, or build your own “VATS Sim Chip” that will send the proper signal to the ECM.

For the purpose of simplicity sake, I would only recommend the ECM programming method.

When VATS has not detected anything wrong and is working properly, it will send a 5v 30Hz signal to the ECM to tell it to enable the fuel injection system during cranking. Once the the engine is running, it no longer needs this signal. If VATS has tripped or there is a problem somewhere in VATS, this signal is killed and therefore the ECM will not enable the fuel injection system to start the engine with.

Recommended Bypass Method: Reprogram the ECM

The easiest method is to get a new EPROM chip programmed by a reputable company. They can remove the need for the computer to check the VATS system at startup, thus eliminating nearly every probable VATS failure from keeping your car from starting. The company I originally used for this writeup and my own needs is no longer programming these chips. Contact me if you would like alternative vendors.

If you are one such vendor that would like to receive more business programming EPROMs, please contact me.

The process is not very expensive, relatively speaking, and can run anywhere from $100-150 depending what all you would like changed in the programming. While you are at it, give your vendor a list of mods you have done to the car so they can give you a nice tune. Even if you car is stock, ask them for a stock tune anyway, it will greatly improve performance, idle, and many other aspects of engine management.
Copyright 2022
  • Home
  • Abandoned Travels
    • Abandonments >
      • 2014-2015 >
        • Mayo Urbex
        • Howey Mansion
        • Uncle James Farmhouse
        • Coffee Farmhouse 01
        • Barber Homestead
        • Fallout Shelter
      • 2013 >
        • CMX Construction
        • Orange House 01
        • Fertilizer Plant
        • Egg Plant
        • Box Plant
        • Ellaville Bridge Revisited
        • Gold Kist Farms Silos
        • Lafayette House 03
        • Columbia House 01
        • Columbia Barn 01
        • Cash's Towing
        • Coastal Revisited
        • Suwannee Shack
        • Hernando House 01
        • Lafayette House 02
        • Lafayette House 01 Revisited
        • Lafayette Chimney Revisited
        • Lafayette Quarry Revisited
        • Williston Urbex
        • Elljay Garage
      • 2012 >
        • Suwannee Barn 01
        • Coastal Service Center
        • Lafayette Quarry
        • Lafayette Chimney
        • Lafayette House 01
        • Lafayette Trailer 01
        • Ellaville
        • Gilcrest House 01
        • Georgia Quarry
        • Family Farmhouse
      • 2010-2011 >
        • Citrus Shack
        • Citrus House 01
        • Georgia House 01
        • Bahia Honda
    • Travels >
      • Italia >
        • Venezia
        • Firenze
        • Amalfi Coast
        • Roma (Coming Eventually)
      • France >
        • Catedral de Notre Dame
      • Cuba
      • United States >
        • Key Largo
        • Smoky Mountains
        • Jasper
        • Shenandoah National Park
        • Colorado 01
        • Colorado 02
        • High Shoals Falls
    • Nature >
      • Super Wolf Blood Moon
    • Water >
      • Blue Heron Bridge 04
      • Blue Heron Bridge 03
      • Ginnie Springs 02
      • Ginnie Springs 01
      • Ginnie Springs 03
      • Blue Heron Bridge 02
      • Blue Heron Bridge 01
  • Games
    • MTG Arena >
      • Arena Sleeve Gallery >
        • Arena Sleeve Gallery Home
        • Arena Sleeve Gallery 2023
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        • Arena Sleeve Gallery 2021
        • Arena Sleeve Gallery 2020
        • Arena Sleeve Gallery 2019
        • Arena Sleeve Gallery 2017/2018
      • Arena Sleeve Quick Gallery
      • MTG Arena
      • My Arena Gameplay Data
    • Magic: The Gathering
    • Star Wars: Destiny
    • Diablo Immortal
    • Fallout 76
  • Food
    • Recipes
    • Energy Drinks
  • VATS Sucks
    • VATS Sucks Welcome
    • My Story
    • Troubleshooting Steps
    • VATS Help >
      • 1984-1985
      • 1986-1989 >
        • Passkey Ignition Switch
        • Start Enable Relay
        • VATS Cranking Fuel Enable Signal
        • Schematics
      • 1990 >
        • Start Enable Relay
        • VATS Fuel Enable Signal to ECM
        • Schematics
      • 1991 >
        • Schematics
      • 1992 >
        • Info
        • Schematics
      • 1993 >
        • Info
        • Schematics
      • 1994-1996
      • ZR1
  • Stuff
    • Cars
    • Budget Finds
    • News/Updates
    • Blahg
  • About