Aod with lost gear And burnt oil

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  • #5633
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    I have an new restored aod with a new converteren.I bouth it new restored from a dealer in Sweden. I am from Norway.
    After installing And adjusting the gearcase we went out for testing.
    The 1, 2 and 3 gear work goog in the begining. IT didn’t change to overdrive.
    On the third testtrip it was sliping in 3 gir some time. Then IT was good again. And it change to overdrive 2 times.
    Then we was going on an long trip And ther we list 3 gear. When we drive And IT is downhill IT change to 3 gear but Go to 2 we IT meet resitans.
    Oil was burned.
    We have change Oil twice, but IT is the same. We will recive a new gearbox.
    Do i need to change converter, due to that IT have been running with burned Oil for 300 km?

    Need a replacement transmission? Quality transmissions are hard to find. Free estimate to your email.

    #5634
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    I don’t think it is the automatic overdrive on your model that’s gone bad. I suspect that the problem is in the transmission chain that begins with the input shaft and gearing — loosely, the input shaft, gearing, turbine assembly, torque converter and the like. Somewhere in that chain, a device has gone bad.

    Since you indicated that there was slipping going on, it does narrow things down a bit. Yes, it is possible that that the torque converter has gone bad and is not setting up the proper transmission fluid flow to the valve body and clutches and bands.

    Indeed there are so many possibilities that I would suggest this: Rather than trying to go piece by piece through the transmission chain, replacing as you go — or not, as the case may be — and then moving to the next, put in a replacement rebuilt transmission.

    The top reason for this is that it will likely solve a very frustrating problem quickly and positively. More importantly, though, it will actually keep your costs down. If you replace a transmission piece-by-piece, you will be paying only the part but also the labor, again and again. The tranny will have to be opened and closed every time and then it will have to be torn down to get to the next part and the next. By the time you have finished, supposing you have stumbled accidentally on the offending part quickly, you will have paid roughly three times the cost of a replacement transmission ($13.2K USD).

    Simply replacing the transmission with the proper rebuilt (most “new” transmissions are simply rebuilt devices using old cases) will save you lots of money and will fix the problem once and for all.

    Please let me know what happens as I am interested in the outcome.

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