Cougar Transmission Help - TCCoA Forums
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post #1 of 7 (permalink) Old 11-09-2015, 07:45 AM Thread Starter
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Question Cougar Transmission Help

Just purchased a '96 Cougar with just over 41k miles on it that has been sitting for a long time. As part of getting it back on the road, I was doing some checking and servicing of the car. One was the transmission fluid and filter change since the car did a slight shudder on the drive home while in overdrive going very slowly up a back road hill by my home. So upon dropping the pan, I see the fluid is a little dark and I also find a small off-white colored plastic piece with an o-ring seal around floating in the pan. The part almost looks like some sort of plunger. I've done some quick looking at the transmission and also tried finding some exploded transmission views but so far I'm unable to determine the part and where it belongs in the transmission. Any body have an idea where I can locate a good exploded view of the trans online or anyone know of this part and where it goes? Thanks.
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post #2 of 7 (permalink) Old 11-09-2015, 08:45 AM
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It's called the "Oh $#!+" plug because everyone who doesn't know what it is, sees it floating in the pan and says that, and also because when you drop the pan on a trans with over 100K miles and see that in there, you say the same thing if you do know what it is.

That is a plug that they used from the factory to keep the transmission sealed where the dipstick goes. When they install the dipstick, they line it up on the long thin part that would have been sticking out, and just push it through into the pan, where it floats around until the pan gets dropped to have the fluid and filter changed. At this point, it serves no purpose, so just throw it away.

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post #3 of 7 (permalink) Old 11-09-2015, 11:46 AM
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The end of the transmission dipstick tube gets inserted into a bore in the case of the transmission..

On the end of the dipstick tube that gets inserted into that bore is an o-ring to seal the tube from leaking..

The little plug you found is worth hanging onto if you ever have to remove the transmission..

The dipstick tube gets removed before you drop the transmission out of the car..

Remove the old dipstick tube..Then prior to installing the transmission..
Insert the plug into the bore where the dipstick tube normally sits..

You only need it pushed in just far enough so that it prevents any fluid leakage or debris from falling into the transmission case..


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post #4 of 7 (permalink) Old 11-09-2015, 12:01 PM
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*gasp* That's the servo piston for the adjustable power band!

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post #5 of 7 (permalink) Old 11-09-2015, 12:34 PM Thread Starter
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Thanks for the replies. Was a little confused as to what it was for as I'd never encountered one before and couldn't figure out where it went. So far this car is turning out pretty worthwhile with just some needed maintenance. One less issue on my list. Thanks again !!
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post #6 of 7 (permalink) Old 11-09-2015, 04:16 PM
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Moved to the 4R tranny forum, more people will see it here!


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post #7 of 7 (permalink) Old 11-09-2015, 04:23 PM
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That is a sign that it's never had the pan dropped; the fluid is probably original.

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