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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 20 of 50
  1. Jul 28, 2006
    mruta

    mruta I drank with Billy!

    Downers Grove, IL
    Joined:
    Sep 22, 2002
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    422
    Re: V6 Cutting out at cruising speeds?

     
    mruta, Jul 28, 2006
    #381
  2. Jul 28, 2006
    sparky

    sparky Sandgroper Staff Member Founder

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

     
    sparky, Jul 28, 2006
    #382
  3. Jul 28, 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?

    When you do the starting fluid spray test make sure its up to temp 1st. If the intake is warped a little it'll show up then.
    You can also use carb cleaner if you have that.
     
    BlueFlu, Jul 28, 2006
    #383
  4. Jul 28, 2006
    mruta

    mruta I drank with Billy!

    Downers Grove, IL
    Joined:
    Sep 22, 2002
    Messages:
    422
    Re: V6 Cutting out at cruising speeds?

     
    mruta, Jul 28, 2006
    #384
  5. Jul 28, 2006
    vanguard

    vanguard

    Re: V6 Cutting out at cruising speeds?

    Ngk!
     
    vanguard, Jul 28, 2006
    #385
  6. Jul 28, 2006
    beeser

    beeser Member

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

    jpflat2a to the rescue! Might get Joel to bring his Ngks too if you ask nice.
     
    beeser, Jul 28, 2006
    #386
  7. Jul 28, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    Re: V6 Cutting out at cruising speeds?

    no Splitfire
    no Bosch
    no NGK
    no AC
    no platinum/copper coated/titanium/gold plated etc etc
    no resistor
    just plain old Champion (1st choice) or Autolite (2nd choice)
    period
    it's really that simple
     
    jpflat2a, Jul 28, 2006
    #387
  8. Jul 28, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    Re: V6 Cutting out at cruising speeds?

    Steve, are you on my payroll somehow ????
    :D
    just trying to help
     
    jpflat2a, Jul 28, 2006
    #388
  9. Jul 28, 2006
    MOP

    MOP Active Member

    Pullman, WA
    Joined:
    Sep 25, 2003
    Messages:
    1,131
    Re: V6 Cutting out at cruising speeds?

    I run the BOSCH-SUPER's (pn 7516). Don't know if they are any good or not, but they were available and seem to work. I also have a good set of plug wires (on my JEEP) that you can use to troubleshoot.
     
    MOP, Jul 28, 2006
    #389
  10. Jul 28, 2006
    beeser

    beeser Member

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

    Jim - I know you're just itchin' to get your hands into it (help as you say). Just showing my confidence in your abilities. Besides, Sparky sounds like he's ready to blow a fuse. The offer of the VW mechanic was just icing on the cake. Smilely faces all around if I knew how to include them.
     
    beeser, Jul 28, 2006
    #390
  11. Jul 28, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    Re: V6 Cutting out at cruising speeds?

    rubbing hands
    itch itch itch
    you're correct
    itch itch itch
     
    jpflat2a, Jul 28, 2006
    #391
  12. Jul 28, 2006
    beeser

    beeser Member

    Arizona
    Joined:
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    587
    Re: V6 Cutting out at cruising speeds?

    That's the spirit Jim! How much is the plane ticket? We'll call it a rescue mission.
     
    beeser, Jul 28, 2006
    #392
  13. Jul 28, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    Re: V6 Cutting out at cruising speeds?

    ssshhh.... in whispered voice
    don't tell sparky
    I've stood at the front of my Jeep, for hours, staring at the V6, trying to figure out what he/we could have missed....
    ssshhhh......
     
    jpflat2a, Jul 28, 2006
    #393
  14. Jul 28, 2006
    Txjake

    Txjake I wrenched with Sparky

    Oklahoma City OK
    Joined:
    Feb 3, 2006
    Messages:
    544
    Re: V6 Cutting out at cruising speeds?

    Sparky,

    I'm voting electrical. Have you had the alternator checked for it's output under full load? If you are running HEI and not getting enough constant voltage to your dizzy, then it is going to not send out a consistant spark. Do you have stock pulleys? How new is your belt? The problem lies in the electrical, me thinks

    cheers :beer: :beer:

    oh yeah, disconnect the tach....:)
     
    Txjake, Jul 28, 2006
    #394
  15. Jul 28, 2006
    sparky

    sparky Sandgroper Staff Member Founder

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

    Disconnected the tach, had no effect.

    I'll put new plugs in tomorrow. I thought about the alternator too.

    I tried lugging it up hills in 3rd gear, nice steep ones going about 20 mph, didn't miss a beat.

    Watched the tach tonite on the way home, it never bounced, just drifted down as the Jeep started slowing.
     
    sparky, Jul 28, 2006
    #395
  16. Jul 28, 2006
    sparky

    sparky Sandgroper Staff Member Founder

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

    Maybe this'll help more.

    It won't cut out at speeds below 60+ MPH now UNTIL I've gone over that limit, whatever the speed may be. Then once I back down to 45 or so I can once again accelerate to 55 MPH or so. But if I go over 60 it'll start up again and I'll have to slow down again. Definitely backfiring through the carb.
     
    sparky, Jul 28, 2006
    #396
  17. Jul 28, 2006
    jayhawkclint

    jayhawkclint ΜΟΛΩΝ ΛΑΒΕ

    Oklahoma City, USA
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    jayhawkclint, Jul 28, 2006
    #397
  18. Jul 28, 2006
    sparky

    sparky Sandgroper Staff Member Founder

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

    Yeah, it would explain alot.

    I swear, I tried MOP's old carb. It ran worse at idle than mine does but exhibited the same symptoms on my Jeep, which it didn't do on his. :?
     
    sparky, Jul 28, 2006
    #398
  19. Jul 29, 2006
    jhuey

    jhuey Michigan Jeeper!

    Indian River...
    Joined:
    Apr 9, 2004
    Messages:
    415
    Re: V6 Cutting out at cruising speeds?

    Is it a backfire?, or more like a huffing/popping. When a engine runs lean under load it can "lean sneeze", not a true backfire where combustion takes place in the intake. A lean condition can be caused in the power valve circuit (when under load), or a main jet obstruction. Of course a vacuum leak would do it too.
     
    jhuey, Jul 29, 2006
    #399
  20. Jul 29, 2006
    sparky

    sparky Sandgroper Staff Member Founder

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

    Yes, I guess it's more huffing/popping as you described it.
     
    sparky, Jul 29, 2006
    #400
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