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Thread: dead truck

  1. #1
    Join Date
    Jul 2010
    Location
    Philly, PA
    Posts
    7

    Default dead truck

    Heard this one before? 1994 RRC, started 100% of the time last 10 years use of this second owner truck. Drove through a puddle Saturday. After that truck was dead. Nothing when turn key. No cranking, no dash lights, no power to windows, no can switch out of park...nothing. Electrical silence. However, dome light works, as do door locks. Flummoxed in Philly.

    THX if any ideas.

  2. #2

    Default

    How deep was the puddle? Sounds like a dead main ecu to me.

  3. #3
    Join Date
    Jul 2010
    Location
    Philly, PA
    Posts
    7

    Default puddle killed truck

    ...the puddle was trivial, couple inches deep, hit it at 20 - 25 mph. Truck continued to run until I shut it off. One observation I did not mention: before complete electrical silence the dash lights did light up for a few seconds on first and second attempt to start. By the third attempt, all power associated with turning the key in the ignition was gone.

  4. #4

    Default

    maybe a bad ground... seems like i'm constantly chasing grounding issues
    '94 RRC County TDi (2.8 Isuzu 4JB1-T)

  5. #5
    Join Date
    Oct 2007
    Location
    Erin, Ontario
    Posts
    25

    Default

    There's two metal relays in the passanger footwell or under the passanger seat depending on the year. These are the main relays, I'd start with checking power to these.
    1995 LWB - Daily Driver
    1988 SWB - Bought for parts but it LIVES !

  6. #6
    Join Date
    Sep 2007
    Location
    Philadelphia, PA
    Posts
    122

    Default Coincidence?

    Check the battery.

    How much voltage does it have while parked?
    How much voltage does it have while attempting to start?

    Sounds like a coincidence.
    1990 RRC, 3.9L, AUTO "Willow Pond" (Sold)
    1996 D1, 4.0L, AUTO "Lucas"
    1999 RR, 4.0L, AUTO "Belle" (Sold)

  7. #7

    Default

    Might not be a coincidence. The water could have caused the belts to slip and not charge the battery.

  8. #8
    Join Date
    Jul 2010
    Location
    Philly, PA
    Posts
    7

    Default battery is OK

    Just checked the battery. 12V at rest and 12V when ignition key turned. No change in voltage. Also, no brake light when push brake. Maybe its a problem with the ignition switch...will need to thoroughly check the ground connections. As far as that goes, I am guessing I should look for loose, rusted connections where contacts would be failing. Honestly, that just does not seem like the problem since never had a hint of a problem before.

    In the spirit of transparency and full disclosure....the radiator has been leaking for several months, spraying some coolant on engine, but not excessive. And, as indicted truck has been working 100%. However, the way the problem surfaced - ie immediate, absolute failure - it seems to me like something broke...

    I hope this is not a red herring. I will be under the truck early Sat AM.

    Thanks for suggestions already and any more words.

  9. #9
    Join Date
    Sep 2007
    Location
    Philadelphia, PA
    Posts
    122

    Default Jump starter

    Battery should be around 12.5V at rest.
    May dip down to ~10V while attempting to start.

    To test the ignition switch... turn the key to the on position (II?)
    Get under the vehicle and jump the starter by using a remote starter switch or by attaching a cable from the positive terminal on the starter to the bendix terminal. Does engine attempt to start? Or nothing?

    I too live in Philly and may be available to render assistance.
    1990 RRC, 3.9L, AUTO "Willow Pond" (Sold)
    1996 D1, 4.0L, AUTO "Lucas"
    1999 RR, 4.0L, AUTO "Belle" (Sold)

  10. #10

    Default

    check all wiring related to battery and starter, seems to me you lost a major power or ground wire.
    perform a voltage drop test...

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