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Coolant in Trans Fluid with POWER LOSS 700 86

posted by  someone claiming to be Chuck on  Mon Nov 20 20:55 CST 2000 [RELATED]

My 86 740T has coolant in the transmission fluid. The car has been experiencing a whinning noise coming from the front of the trans area when I try to accerlerate. The noise begins once the car is up to normal operating temperature. As the the noise gets louder I begin to experience a progressive power loss. It does have normal turbo boost otherwise. Finally the car will have no power and won't go in forward or reverse.

I can turn the car off for a brief period and it may drive somewhat OK. I recently put in a radiator,radiator hoses, trans cooler line, expansion tank, water pump, cam belt, vacuum hoses. Is it a bad radiator, trans. What kind of things would cause that on this model.







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    Re: Coolant in Trans Fluid with POWER LOSS 700 86

    posted by  someone claiming to be Fred on  Tue Nov 21 00:03 CST 2000 [RELATED]

    It's gotta be a bad radiator trans cooler and coolant will ruin your trans if it's not already too late. Do not drive the car anymore as is. Once the radiator is replaced again, drain the trans fluid and either flush it or do several drain and fills, running it in between until the fluid is red again and then drive it.







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    Re: Coolant in Trans Fluid with POWER LOSS 700 86

    posted by  someone claiming to be DS on  Mon Nov 20 23:47 CST 2000 [RELATED]

    It's got to be that new radiator you put in. What brand was it? I'm sure we would all like to know.

    Not sure if you've damaged your trans. Flush it out real good and try it out.







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      Re: Coolant in Trans Fluid with POWER LOSS 700 86

      posted by  someone claiming to be dick on  Tue Nov 21 02:09 CST 2000 [RELATED]

      Bad trany cooler in radiator. To test, lay radiator on its front, fill with as much water as possible. Take low pressure compressed air and feed into one trany cooler line opening and place finger over other opening. If you see bubbles it is a sure fire cooler leak.

      My trany, cooler went out over 50k miles ago, and have had no problems since I purged the trany. Purge your trany until it runs bright red. I did this by disconnecting the cooler return line and starting the car and pumping out a quart or two, stopping engine, filling and repeating until bright red. May want to change fluid again in a few thousand miles or sooner if color is not correct.

      The AW series of tranies are tough and should cause no probs if you change the oil.

      Good luck,

      dick






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