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Thread: Terminator failed. No Points Output

  1. #1

    Default Terminator failed. No Points Output

    This system has worked until about a month ago. Terminator EFI with 1st Generation Dual Sync. Customer says it was running. They shut it off then it won't start. I checked the system and no spark at plug. I replaced the old MSD 6A with new MSD 6AL and new coil. No spark still. ECU sees the Dual Sync. There's RPM when cranking on the datalog and the 3.5" TSLCD. No output out the white wire to the MSD CDI box. This truck ran fine for six months. Is this the lifespan of these units? If so, I have a few vehicles I need to find a suitable replacement EFI units that will last. Is there a better way to contact the tech line? It's always busy and requests to call back later. I've received no response on email. I have datalogs of cranking. I even installed a new GCF from another 460 with Dual Sync that currently works on another vehicle. Still just cranks.
    550-406K
    565-110
    460 Big Block Ford

  2. #2
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    It will not fire the injectors until it sees a RPM signal. Did you take a System Log to see if it's seeing the distributor?

  3. #3
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    http://forums.holley.com/showthread....s-amp-Datalogs (Datalog & System Log Information)
    May God's grace bless you in the Lord Jesus Christ.
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  4. #4
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    Might be worthwhile disconnecting as necessary, and then checking for short to ground on the white wire.
    Makes an excellent anti-theft device when used with a hidden switch. Gary

  5. #5

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    Try doing a TPS Autoset, the LED on the MSD 6AL should blink while cranking when it receives a trigger signal from the ECU, verify there is +12V on the white white KOEO with all connectors plugged in, 12V at both the ECU & MSD 6AL would prove the white wire isn't open or shorted. I'd check for spark at the coil as well just in case there's a rotor or cap issue. Try tapping the white wire to ground with key on and see if the coil fires. https://www.holley.com/support/troub...ng_techniques/

  6. #6

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    Quote Originally Posted by 81 TransAm View Post
    It will not fire the injectors until it sees a RPM signal. Did you take a System Log to see if it's seeing the distributor?
    Yes, datalog has been taken. Fuel is being fired into intake.

    Quote Originally Posted by tcm308 View Post
    Try doing a TPS Autoset, the LED on the MSD 6AL should blink while cranking when it receives a trigger signal from the ECU, verify there is +12V on the white white KOEO with all connectors plugged in, 12V at both the ECU & MSD 6AL would prove the white wire isn't open or shorted. I'd check for spark at the coil as well just in case there's a rotor or cap issue. Try tapping the white wire to ground with key on and see if the coil fires. https://www.holley.com/support/troub...ng_techniques/
    Done that numerous times. No output on the white wire. I'm getting 165 RPM from the distributor at cranking on the datalog. Is this showing an issue with distributor?

    Quote Originally Posted by Danny Cabral View Post
    I added Type 1 to datalog and will record findings. Here's what I have right now:
    Click image for larger version. 

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    This is the GF from another vehicle that runs with same setup. This is three cranking cycles. White wire is OPEN circuit. MSD box lights up and blinks at key on position. It does not blink while cranking because white wire is an OPEN circuit.
    Click image for larger version. 

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  7. #7
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    You have a RPM signal on the handheld, fuel in the intake, but no output on the white wire. I'm going to go with a bad ECU. Is this a HP ECU? Do you have a spare ECU you can test? Can you run the system controlling fuel only.

  8. #8

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    It's an HP ECU. I have another in the customers other car, but I'm not going to take it out. That's a few days work for free. I'd rather dump the Dual Sync and install the original MSD billet distributor and just run timing as it was.

  9. #9

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    I’m a bit dyslexic so excuse me if this doesn’t pertain, but a friend of mine had the exact same problem; HP system, 1st Gen Dual Sync, etc. Ran awesome first 7 months then it just wouldn’t start. He was about to trash then HP when I suggested he look under the cap. Sure enough it was heavily corroded. I mean HEAVILY! Replaced it with the second Gen Dual Sync and it fired right up on the first attempt and hasn’t so much as hiccuped in 2 years. Soooo, check under the cap.

  10. #10
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    A few aren't reading the OP's information. He has engine RPM in the Terminator, which proves the ALL of the input side. He has no spark, but I'm sure he's performed the white wire to ground (points wire test) on his MSD. Which is why he's suspect on no output from the Terminator. So if the white wire is not grounded by accident, I would say the Terminator ECU is faulty. Gary
    Regards, Gary

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