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Thread: AW4 cut out wile driving

  1. #1
    Join Date
    May 2015
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    Simerset TX
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    Default AW4 cut out wile driving

    well heres the deal I have a 94xj with4.0 aw4 np242 and 8.25 with spartin locker i just installed. With that being about a week or 2 ago (prior to rear axle install) I was driving the jeep and it keap acting like it was kicking itself into neutral so I'd slap it into neutral then back into drive and it would kick in so I checked the fluid and it was about a pint low added some didn't move it more then about 50 feet then today I swapped in an 8.25 with a spartin locker then drove it about 50miles just fine then went to drive home got it 50ft let off the gas sounded like I broke a Ujoint stopped looked at the DS no all good so I was going to just try and lamp it home got about 3miles down the road and it just cut out like it was in neutral tried kicking it into neutral and back into drive nothing stoped put it into park then into drive and it would go but veat slow at 3 or 4 grand rpm then nothing checked the fluid and now its about a 1/2 a pint over full wich is weird cuz I changed it before we left and it was dead on full. haven't checked anything yet but any one have any practical suggestions?

  2. #2
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: AW4 cut out wile driving

    Were you checking oil hot or cold? Which oil did you put in it?
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  3. #3
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    May 2015
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    Simerset TX
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    Default Re: AW4 cut out wile driving

    I was checking it cold using the cold full line and im not 100% but I think it was dextron 4 or what ever there up to now it was a qrt i got about a year ago the last time it was low.

  4. #4
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    Sep 2009
    Location
    Chico, CA
    Posts
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    Default Re: AW4 cut out wile driving

    IIRC you need Dextron III. Any other types will make the AW4 act up
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  5. #5
    Join Date
    May 2015
    Location
    Simerset TX
    Posts
    44

    Default Re: AW4 cut out wile driving

    o well then i better check that lol

  6. #6
    Join Date
    Aug 2015
    Location
    Downtown
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    636

    Default Re: AW4 cut out wile driving

    never mind.
    Last edited by GoneWithTheWind; 09-28-2015 at 07:12 PM.

  7. #7
    Join Date
    May 2015
    Location
    Simerset TX
    Posts
    44

    Default Re: AW4 cut out wile driving

    well I checked and it ws dextron 3 and I drained the 1/2 pint out that it was over. but its still doing it. it works fine tell it gets to operating temp it stops doing anything.

  8. #8
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: AW4 cut out wile driving

    Can you shift manually to any gear when hot?
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  9. #9
    Join Date
    May 2015
    Location
    Simerset TX
    Posts
    44

    Default Re: AW4 cut out wile driving

    no when its hot it acts like all i have is park and neutral.

  10. #10
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: AW4 cut out wile driving

    I don't know, doesn't sound good. Lots of miles there. Might be at the end of its life
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  11. #11
    Join Date
    May 2015
    Location
    Simerset TX
    Posts
    44

    Default Re: AW4 cut out wile driving

    I thought so but had to ask. called to c how much it would b to rebuild it and all i can say it Hell no they want more then the things worth lol so probably going to try a JY if no luck I'll just buy a new xj and swap every thing over lol

  12. #12
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: AW4 cut out wile driving

    You could rebuild it yourself. What I think is happening is that it is not maintaining oil pressure. Since it works when cold, I think the oil is getting to thin to keep everything working
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  13. #13
    Join Date
    May 2015
    Location
    Simerset TX
    Posts
    44

    Default Re: AW4 cut out wile driving

    I don't know about rebuilding it my self my ADHD don't like automatic transmissions lol tryed to do it once with a t350. I was thinking it was probably a pressure problem cuz its never been rebuilt so its got 300k on it. I just wanted to get a Second opinion without throwing my thoughts into the mix more to test myself.
    Last edited by radio_flyer_xj; 09-28-2015 at 08:58 PM.

  14. #14
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: AW4 cut out wile driving

    OK, I think you are there with needing another one then
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  15. #15
    Join Date
    May 2015
    Location
    Simerset TX
    Posts
    44

    Default Re: AW4 cut out wile driving

    thanks

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