TX Hill Country dispatch: The Horror! | FerrariChat

TX Hill Country dispatch: The Horror!

Discussion in 'Mondial' started by Faber, Feb 19, 2017.

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  1. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #1 Faber, Feb 19, 2017
    So another glorious drive along Devil's Backbone (~70+ F) in a TX February w/ oldest Gdau to 281 and almost back to just outside New Braunfels - at 52mi she started sputtering and died - pulled off and waited for tow truck - cooled down and started her up - (always started) and nursed my way to a suitable tow location - meanwhile 13yr old Gdau who loves the Mondial was facetiming pals regarding how embarrassing this episode was (she cringes when folks video which occurs a lot to my surprise) I thought I fixed this problem years ago w/ thicker gauge wires to the Fuel Pump Relay based on expert advice via Scott Magnusson who's posts I always learn from - started right up off the tow truck and into the garage later on - Before I spring for a new fuse board is there anything I should be looking into?
    Signed,
    Any drive in the 3.2 is better than all others.
     
  2. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
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    Wade O.
    #2 Wade, Feb 19, 2017
    A drive in an old car is always an adventure. Thanks for sharing yours. :)
     
  3. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
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    Wade O.
    #3 Wade, Feb 19, 2017
    It's been said before, until you replace the board everything else is just patchwork (in other words, the board is the baseline). ;)
     
  4. ///Mike

    ///Mike F1 Veteran

    Dec 11, 2003
    6,097
    Bugtussle
    #4 ///Mike, Feb 19, 2017
    Possible fuel contamination problem?
     
  5. Alden

    Alden F1 Rookie
    Rossa Subscribed

    Apr 25, 2010
    2,913
    Central Florida
    #5 Alden, Feb 20, 2017
    Could be a lot of gremlins to cause your symptoms, but mine did that when 2 of my spark plug extensions on opposite banks "popped off" during a drive.

    I had been replacing the plug clips the day before and didn't re-install the extensions properly.
    Alden
     
  6. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #6 Faber, Feb 20, 2017
    Thanks all - I'll check the plugs...and I did fill up w/ Exxon vice the normal Shell but I don't think(?) that is it. Will follow up on boards - great drive up until then...(-*
     
  7. Alden

    Alden F1 Rookie
    Rossa Subscribed

    Apr 25, 2010
    2,913
    Central Florida
    #7 Alden, Feb 20, 2017
    First thing to check is if it is only running on one bank, or if you have misfiring or non-firing cylinders like I did, easy to do with a spark checker.

    After that you can start tracing the problem thru the usual suspects of ECU/coil/wires/extenders/plugs/+etc.
    Alden
     
  8. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #8 Faber, Feb 20, 2017
    Thanks a lot Alden - BTW - meant "Steve Magnusson" above not Scott.
     
  9. spicedriver

    spicedriver F1 Rookie

    Feb 1, 2011
    3,859
    #9 spicedriver, Feb 20, 2017
    Sounds more like a fuel problem. Press the plunger down with the ignition key on, engine off. You should hear the fuel pump running. You could have a leaky accumulator. Check that by pulling the return hose off, and see if there is any fuel leaking out there.
     
  10. cockrill

    cockrill Formula 3
    Silver Subscribed

    Jan 23, 2008
    1,086
    Columbia, MO
    Full Name:
    Jeremy Cockrill
    #10 cockrill, Feb 20, 2017
    How old is the fuel pump relay? Is it time for a replacement? (Maybe carry a spare?) Also, you can make a jumper wire to bypass the fuel pump relay...

    You can bypass the circuit board entirely for the fuel pump relay. Although I agree with Wade that you (as well as everyone else with an original fuse board, including me) will have to upgrade our boards, bypassing the board for the fuel pump relay may allow you to kick the can down the road a bit.

    Good luck!
     
  11. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #11 Faber, Feb 21, 2017
    Last edited by a moderator: Sep 7, 2017
  12. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #12 Faber, Feb 21, 2017
    Question for the brain trust from a 2 wire electrician: How exactly does one determine amperage draw on the fuel pump? Want to eliminate wiring/FP issues before I pull the trigger on a new board. Thanks,

    BTW Fuse on bypass Relay is 30Amp - Fuse on board for FP is 15A.
     
  13. 2281GT

    2281GT Formula 3
    Owner Silver Subscribed

    Oct 9, 2006
    1,132
    Germany
    Full Name:
    Markus
    #13 2281GT, Feb 21, 2017
    An additional 30 Ampere fuse to the fuel pump relay ??????

    Why that ???

    The relay only has to switch the switching current (less than 2 Ampere) but not the pump power. If the fuse looks like yours, there might be a problem with the wiring to the relay (Short circuit) with rising temperature. No problem at cold start, but problem with warmed up relay and therefore rising resistant. For me it looks like a broken cable from the fuse to the relay or a wobble contact at the relay. IMO the pump is not the problem, because it's after the relay.

    Just for your amusement ... see the various electrical gremlins and the solutions at my thread http://www.ferrarichat.com/forum/mondial/501126-mondial-3-2-coup%E9-59769-a.html
     
  14. Wade

    Wade Three Time F1 World Champ
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    Mar 31, 2006
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    #14 Wade, Feb 21, 2017
    Last edited by a moderator: Sep 7, 2017
    I doubt that amperage draw for/from the fuel pump is the issue. There was a reason why the relay on the board was bypassed instead of replaced.

    On the wiring diagram, the circuit goes from the pump, through the C1 connector and then straight to the board via Connector W.

    BTW, all Mondials except the t use the same fuel pump.
    .
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  15. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
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    Tom G.
    #15 Faber, Feb 21, 2017
    Hi 2281GT and thanks very much for your insights - Previous owner added the 30A inline fuse w/ the "relay fix" - I'll check connections and definitely review your url -
     
  16. Wade

    Wade Three Time F1 World Champ
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    Mar 31, 2006
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    Wade O.
    #16 Wade, Feb 21, 2017
    Last edited by a moderator: Sep 7, 2017
  17. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #17 Faber, Feb 21, 2017
    Thanks a lot Wade - I'm looking up the wiring diagram - but, in my case the relay connects into the board so I'm wondering what was achieved by removing the relay from direct connection to the board.
     
  18. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #18 Faber, Feb 21, 2017
    Last edited by a moderator: Sep 7, 2017
  19. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #19 Faber, Feb 21, 2017
    Hi Wade - Does the "25P" on the connection line refer to color? (P=Beige)
     
  20. Wade

    Wade Three Time F1 World Champ
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    #20 Wade, Feb 21, 2017
    Last edited by a moderator: Sep 7, 2017
    Yeah, that's too much workaround for me. Trying to troubleshoot, guess and fix work like that is a really painful. Continuously.

    Removing the board for inspection isn't too difficult, so it's worth a look.

    This was mine:
    .
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  21. Wade

    Wade Three Time F1 World Champ
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    Mar 31, 2006
    32,793
    East Central, FL
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    Wade O.
    #21 Wade, Feb 21, 2017
    Actually, that's 2.5 mm², and yes, P = Beige.

    Pin 7 on Connector W.
     
  22. 2281GT

    2281GT Formula 3
    Owner Silver Subscribed

    Oct 9, 2006
    1,132
    Germany
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    Markus
    #22 2281GT, Feb 21, 2017
    Sorry, Faber, IMO you NEED to change/repair/reconnect the fusepanel board.
    If someone has connected SUCH a Bypass there MUST be a reason for.


    Gesendet von iPhone mit Tapatalk
     
  23. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #23 Faber, Feb 21, 2017
    Thanks for the clarification Wade & 2281GT you may have a good point.
     
  24. Faber

    Faber Formula Junior

    May 5, 2011
    954
    TX Hill Country
    Full Name:
    Tom G.
    #24 Faber, Feb 21, 2017
    Last edited by a moderator: Sep 7, 2017
  25. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
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    Wade O.
    #25 Wade, Feb 21, 2017
    Mysteriously missing. Spontaneous combustion? ;)
     
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