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Fixed: V6 Cutting out at cruising speeds?

Discussion in 'Early CJ5 and CJ6 Tech' started by sparky, May 14, 2006.

Page 24 of 50
  1. Jul 30, 2006
    tdobson

    tdobson Tom

    Hampton, Va.
    Joined:
    Nov 7, 2004
    Messages:
    65
    Re: V6 Cutting out at cruising speeds?

    When I installed my HEI I had to advance the timing to something like 40* before TDC. Could this be the elusive problem?
     
    tdobson, Jul 30, 2006
    #461
  2. Jul 30, 2006
    beeser

    beeser Member

    Arizona
    Joined:
    Jan 8, 2003
    Messages:
    587
    Re: V6 Cutting out at cruising speeds?

    That's one of the possibilities I was getting at in my early posts. Might also consider the emergence brake drum.
     
    beeser, Jul 30, 2006
    #462
  3. Jul 30, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Re: V6 Cutting out at cruising speeds?

    I put that advance there so I could time it. ;)

    I know #1 is where it should be. Vacuum cannister position doesn't matter as long as the plug wires are in the right order and the rotor is in the right place (it is). Remember, it did this with the Delco too. I doubt it's related to my distributor(s).

    Could be brakes dragging, disk or parking. I need to get the parking brake hooked up. :oops:
     
    sparky, Jul 30, 2006
    #463
  4. Jul 30, 2006
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
    Joined:
    Jan 21, 2004
    Messages:
    1,552
    Re: V6 Cutting out at cruising speeds?

    If the brakes are dragging it would show up while coasting in neutral, or with the clutch pushed in.
    Dont think dragging brakes would make it sputter or run rough.
     
    BlueFlu, Jul 30, 2006
    #464
  5. Jul 30, 2006
    beeser

    beeser Member

    Arizona
    Joined:
    Jan 8, 2003
    Messages:
    587
    Re: V6 Cutting out at cruising speeds?

    The mystery, in whole or in part, is that the only time the problem occurs is when it is in 3rd gear and going over 55 mph. At least that's my understanding. As Sparky has said many times already, why doesn't the engine react the same in other gears or parked for that matter while running at the same rpms?
     
    beeser, Jul 30, 2006
    #465
  6. Jul 30, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Re: V6 Cutting out at cruising speeds?

    Faster than 55 now with the new cam. I can cruise with relative ease at 55 but I don't have as much power as I should have at that point.
     
    sparky, Jul 30, 2006
    #466
  7. Jul 30, 2006
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
    Joined:
    Jan 21, 2004
    Messages:
    1,552
    Re: V6 Cutting out at cruising speeds?


    I hear ya.
    Maybe he just needs a 4 speed. R)

    Very hard to E diagnosis a drivabilty issue.
     
    BlueFlu, Jul 30, 2006
    #467
  8. Jul 30, 2006
    beeser

    beeser Member

    Arizona
    Joined:
    Jan 8, 2003
    Messages:
    587
    Re: V6 Cutting out at cruising speeds?

    But it's still sputtering or caughing back above 55 mph?
     
    beeser, Jul 30, 2006
    #468
  9. Jul 30, 2006
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,378
    Re: V6 Cutting out at cruising speeds?

    Out of curiosity, what does the exhaust feel like? Both sides hot, not missing?
     
    Glenn, Jul 30, 2006
    #469
  10. Jul 30, 2006
    dohc281

    dohc281 It is what it is.

    Laurel Springs, N.J.
    Joined:
    Dec 30, 2004
    Messages:
    605
    Re: V6 Cutting out at cruising speeds?

    One solution is not to go over 55.;) It still sounds like an electrical gremlin, but I'm unsure of what it is. I can't wait to hear the final outcome.
     
    dohc281, Jul 30, 2006
    #470
  11. Jul 30, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
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    Messages:
    9,221
    Re: V6 Cutting out at cruising speeds?

    Both sides hot. Not missing. Typical Dauntless rough idle.

    Breaking in the cam at 2200 RPM the exhaust was HOT.
     
    sparky, Jul 30, 2006
    #471
  12. Jul 30, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    Re: V6 Cutting out at cruising speeds?

    Same symptom, now it just starts occuring at 60+ MPH. Not sure where exactly. Harder to get it up to that speed to get it to do that. Hard to get it to go that fast. Like I said, 3rd just feels gutless. Never did before.
     
    sparky, Jul 30, 2006
    #472
  13. Jul 30, 2006
    tinker

    tinker GNGPN

    winnipeg,manitoba...
    Joined:
    Feb 17, 2005
    Messages:
    158
    Re: V6 Cutting out at cruising speeds?

    Hey Sparky mine was smooth too but just couldn't do the job . Yes the holly is a eletric pump i used the red pump and no problems after 5 years .
     
    tinker, Jul 30, 2006
    #473
  14. Jul 30, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Re: V6 Cutting out at cruising speeds?

    I got an electric fuel pump at Autozone, then stopped by a fellow Jeeper's place and he gave me one! So, the Autozone one is going back. :)

    I'll try to put it in tomorrow nite. I needed a day off from all this. :(

    Thanks Tinker, sounds like it could be...
     
    sparky, Jul 30, 2006
    #474
  15. Jul 31, 2006
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
    Messages:
    5,470
    Re: V6 Cutting out at cruising speeds?

    If the fuel pump does not help - what is the RPM that your getting the trouble at? I hate to say this, but a small vac leak will manifest it'self like this as well. Under load the vac in the manifold goes down - it may or may not effect lower gears as the load (and vac) is not the same. I fought with one simular (though not exact) when we swapped the intake, the problem went away.

    Just a thought.
     
    Warloch, Jul 31, 2006
    #475
  16. Jul 31, 2006
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,378
    Re: V6 Cutting out at cruising speeds?

    Speaking of vacuum, has the hose going to the brake unit and the unit itself been eliminated as being a problem?
     
    Glenn, Jul 31, 2006
    #476
  17. Jul 31, 2006
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,350
    Re: V6 Cutting out at cruising speeds?

    Hey Sparky

    Make sure you grounds are clean and tight. I bet you disconnected the negitive bat terminal (knowing you the way I do)
     
    blevisay, Jul 31, 2006
    #477
  18. Jul 31, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
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    9,221
    Re: V6 Cutting out at cruising speeds?

    They're good. Yes, I disco'd it. :)
     
    sparky, Jul 31, 2006
    #478
  19. Jul 31, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
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    Re: V6 Cutting out at cruising speeds?

    No.
     
    sparky, Jul 31, 2006
    #479
  20. Jul 31, 2006
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,350
    Re: V6 Cutting out at cruising speeds?

    Me thinks I have an idea.

    Feel like playin answering questions?
     
    blevisay, Jul 31, 2006
    #480
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