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coolant in transmission 900

posted by  someone claiming to be Voldek on  Tue Oct 23 21:32 CST 2012 [RELATED]

Hello everybody
I just got this rusty 940 turbo 1994 for parts and there is ATF in coolant and coolant in ATF. My question is: should I scrap the tranny or is it possible to rescue it with flush procedure? I don't know how the tranny behave cos the car is not plated and can't take it on highway for spin. On the driveway it moves the car.
Thank you all in advance!








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    coolant in transmission 900

    posted by  rjk2 on  Wed Oct 24 19:11 CST 2012
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    last visit: Sat Jun 21 05:30 CST 2014
    [RELATED]

    The tranny is toast, just a matter of time. Depending on the extent of the damage done (and there IS damage if there is coolant in the tranny) you MAY get as much as a year out of a flush before the clutch pack completely disintegrates.
    --
    1999 E320 1994 F150 (awaiting a new engine) 1989 560 SL 1994 945T (daughter's) 1986 242Ti (awaiting a B230FT transplant) 1968 GT500KR (under slow restoration) 2007 HD Nightster (son's ride)








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    coolant in transmission 900

    posted by  Will740turbo on  Wed Oct 24 00:12 CST 2012
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    last visit: Wed Oct 22 16:09 CST 2014
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    What transmission is it? I know that coolant in the tranny for an AW 70/71/72 will destroy/degrade the clutch packs and that a flush will not fix things. These transmissions were used in the 80's and early 90's, so maybe your car has one that's more robust.

    Good luck
    --
    740T and 244DL - Frank the Tank @287K mi. and The Polished Turd @237K mi.








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      coolant in transmission 900

      posted by  Onkel Udo II on  Wed Oct 24 03:35 CST 2012
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      last visit: Fri Oct 24 08:50 CST 2014
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      "These transmissions were used in the 80's and early 90's, so maybe your car has one that's more robust."

      I have yet to find a more robust automatic than the AW70/71. The only thing that seems to kill them is coolant in the fluid.

      To the OP, your tranny is likely toast. That being said, the cost of trying is whatever Walmart charges for 3 gallons of ATF and a cheap plastic hose. Since you have to have the radiator out anyway, you are probably only talking about 30 minutes of your time.

      If the tranny works, plan to do a filter change or cleaning at the next oil change. Should be the only time you have to do it, but pre-soak the dipstick nut with penetrating oil every week after you decide the tranny is a keeper until you drop the pan.








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        coolant in transmission 900

        posted by  Will740turbo on  Thu Oct 25 01:23 CST 2012
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        last visit: Wed Oct 22 16:09 CST 2014
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        Heh, I meant more robust.... against coolant degrading the clutch packs. These transmissions are AWESOME.
        --
        740T and 244DL - Frank the Tank @287K mi. and The Polished Turd @237K mi.








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    coolant in transmission 900

    posted by  jerryc on  Tue Oct 23 22:32 CST 2012
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    last visit: Wed Oct 8 21:28 CST 2014
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    likely the radiator failed internally so you'd have to replace that, then do the flush in the FAQ. Worth a try with a JY rad and 3 gals of cheap fluid I'd think, but don't expect miracles.
    A JY trans is not expensive, kinda all depends on the rest of the car IMO.







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