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Thread: Terminator X not getting power to #6 fuel injector.

  1. #1

    Default Terminator X not getting power to #6 fuel injector.

    5.3L, 76 mm turbo, 93 octane. Car has been running great for about two months. then started misfiring. Changed plugs, wires, coil packs, cam sensor, crank sensor, and knock sensor. Still had misfire. Sent injectors to get cleaned/tested, they were fine. Finally figured out that I’m not getting power to the #6 fuel injector plug. Ohm tested wire from plug to computer seems fine. Could the computer be bad? Also tried an old tune, same thing

  2. #2
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    Is this an AFM engine? If it is, remove the even valve cover off, start the engine and observe the cylinder #6 valves operation. Gary
    Regards, Gary

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    He said injector #6 isn't getting +12V power. This seems like a wiring harness problem at the. splice.
    http://forums.holley.com/showthread....9623#post69623 (System Relay & Injector Wiring Troubleshooting)
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  4. #4

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    Not only is that injector not working, but AFR starts to get really lean, but it’s so rich it’s straying fuel out the exhaust.

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    Quote Originally Posted by Zacklewis View Post
    5.3L, 76 mm turbo, 93 octane. Car has been running great for about two months. then started misfiring. Changed plugs, wires, coil packs, cam sensor, crank sensor, and knock sensor. Still had misfire. Sent injectors to get cleaned/tested, they were fine. Finally figured out that I’m not getting power to the #6 fuel injector plug. Ohm tested wire from plug to computer seems fine. Could the computer be bad? Also tried an old tune, same thing
    No +12V to #6, or no ground pulse? Would seems odd, you have no +12V, since the +12V is common to all eight injectors. Which wire have you measured resistance on? Gary
    Regards, Gary

  6. #6

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    The green wire.

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    The green wire is the ECU grounded side of the injector, correct? And the other side of the injector #6 connector has 12 volts, tested with a multimeter, with the key on? Have you checked for injector pulse with a noid light? Does this engine have AFM (Active Fuel Management) or DOD (Displacement On Demand)? Gary
    Last edited by Gaz64; 08-27-2019 at 08:57 PM.
    Regards, Gary

  8. #8

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    Waiting on a noid light. And no DOD.

  9. #9
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    So you have the 12 volts positive to #6, like all the other seven injectors do? And you have Ohms tested the ECU pulsed ground (green wire) end to end (injector to ECU) and it reads near 0 Ohms, correct? And you've checked for no broken rocker arms, etc? Gary
    Regards, Gary

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