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Auto trans pressurizing fluid

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by RoboticCherry-Coke, Jul 3, 2015.

  1. RoboticCherry-Coke

    RoboticCherry-Coke New Member

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    Hi guys,

    My bro has a V6 VS Ute, just the other day it started pressurizing the trans fluid to the point that it shot the dipstick out and covered my shed with fluid.
    My instant assumption was that the trans was stuffed and I have started hunting for a new trans for him, however, someone suggested to me that the breather might be blocked. Does this sound like a possibility? If so where is the breather located on the trans? Any other suggestions?

    Cheers
     
  2. GothicKidd

    GothicKidd ლ(ಠ益ಠლ

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    Does he have any problems with the transmission? or just shooting out the dipstick?

    Heres a picture...
    [​IMG]
     
  3. Harvs82

    Harvs82 Active Member

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    Possibly too much fluid, or the blocked breather pipe?

    Note that the 4L60E doesn't have the kickdown cable as pictured above too. On a side note, I'm pretty sure that's why Holden's introduced the locking transmission dipstick, so stop it popping out in the first place...
     
  4. sk2304

    sk2304 Member

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    Same thing happened with my old VS but it splashed onto the exhaust and started a fire under the bonnet. Pretty scary luckily I kept an extinguisher in the boot, no damage apart from slight charring to the bonnet dampening material and slight burning of the paint on the chassis rail.

    I take good care of my cars, fluid level was not low, fluid was in good nick, I checked breather pipe seemed ok but replaced it anyway. Fluid was not too hot as I had only travelled about 2km (also running a trans cooler). So I still have no idea why.

    A search of the forum showed other people have had the same prob.

    But my trans was still working correctly. I never had a problem with it.
     
  5. RoboticCherry-Coke

    RoboticCherry-Coke New Member

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    Nah the trans has been running fine until this. I had a quick look in the dark last night and after having the car idling for a few mins then turning it off you can hear the trans fluid sounds like its boiling.

    I'll take a closer look at that breather pipe in the daylight after work. Where should the pipe go to, like out of the trans then to where? Just loose in the engine bay?
     
  6. VR38

    VR38 Well-Known Member

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    Overfilled?
     
  7. hako

    hako Donating Member

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    The boiling sound is probably just bubbles bursting in the fluid from being churned around especially as it is now probably low due to the fluid it dumped when it spat the dipstick out. If it was boiling you will see fumes coming out of the dipstick tube.
    The dipstick can also be ejected if it is not clamped in securely - see the pics for a mod I did to tighten the dipstick clamp.
    Good Luck.
     

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  8. sk2304

    sk2304 Member

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    When I replaced the breather pipe I just ran it where it originally was. I think there was a bracket or similar to hold it in.
     
  9. chargedvx6

    chargedvx6 Active Member

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    If nothing has been worked on or changed and it's pumping out the vent on top of the box that usually means excess heat in the box or blocked breather. You could try fitting a trans cooler or if it already has one check that for blockages. If it is blocked though it will likely be material from a failing component that's done it sadly
     
  10. Jackson VR

    Jackson VR New Member

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    Sorry I know this post is really old but I’m having the same dramas. I keep fixing leaks in the transmission but then the next ‘weakest link’ starts to leak. Now have noticed the whole system is pressurising itself hence the leaks. I have replace the breather hose and if I blow down it fluid will come out the dipstick, but if I blow down the dipstick no air or fluid for that matter will come out the breather.... help it’s doing my head in. To the point I’m currently rigging up a dodgy hose onto the dipstick tube to a ‘breather’ milk bottle....
     
  11. BlackVXGTS

    BlackVXGTS Well-Known Member

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    From 4L60e common problems:

    28.
    All fluid pumped out through the vent tube: Plugged cooler line. Flush the transmission cooler and cooler lines. Also could be overfilled transmission.
     
  12. Commydo

    Commydo Member

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    Hello,
    My trans fluid is over the hot mark on dipstick (when cars cold)
    Then after I go for a 40 min drive it's under the cold mark,(wayyy under hot mark)
    Would anyone know why's it's doing that?An what I can do,
    I've put 1.5lrs of fluid in since i noticed it was low(checked hot)

    I check it after a good drive,I leave the engine idling, car in park,
    I've also went down an up the gears (5secs in each)
    It still runs under the cold mark on dipstick,
    Trans seems to be running fine,an no fault codes coming up
     
  13. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Was the engine off on the initial check? This is normal. With the engine off the fluid will settle down into the pan, when you fire up the motor the fluid goes where it needs to be and the level will settle. It probably needs more fluid but if it is that low I'd be looking for a leak.
     
  14. Commydo

    Commydo Member

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    Hi,
    The initial check was with car running, after maybe 1 hours drive,,
    I put over a litre in,then the next day I checked it cold an the fluid was over the hot mark,then I went for a drive an checked it,then it was under the cold mark,
    I check it with car running,I've only checked afew times while the car was off/cold,
    I can't see any leaks anywhere,,
    It's super annoying lol,,
     
  15. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Level ground? Foaming?
     
  16. Commydo

    Commydo Member

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    Level ground yes,
    No foaming,
    When car is hot/engine running,the level on dipstick is under the cold mark,
    When the car is cold/car off,
    the level on dipstick is over the hot mark,
    Way up,
    I don't know why it's like that,
     
  17. Commydo

    Commydo Member

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    Shouldn't the fluid level be in the cold mark when the car is cold,
    And in the hot mark when car is hot lol,

    Mines over the hot mark when it's cold,and under the cold
    When its hot,
    I've put 1.5ltrs in since I noticed it,
     
  18. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    When the engine is off the fluid level will rise as the fluid settles down out of the transmission into the pan. This is normal so if you check the fluid level before you start the car in the morning it will be way up the dipstick. One the engine starts the pump will push a fair amount of the fluid into the various transmission parts and then the level will settle much the same as the engine.

    The Cold and Hot markings on the dipstick are to be used with the engine running, obviously as the fluid heats it expands a little and hence the reason the hot mark is above the cold mark.
     
  19. Commydo

    Commydo Member

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    Righto I get ya,
    So what I should do is get it hot again,and just keep putting in fluid untill it comes up to the hot mark?
     
  20. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Yes. The correct fluid level with the trans at the correct working temp is the most critical one to get right.
     
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