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  #1  
Old 12-02-2016, 04:03 PM
elijahbird7 elijahbird7 is offline
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Default Transmission Dipstick spew out

I put my 59 away for the winter in my garage about 4 weeks before the garage door opener light burnt out. In order to get my ladder to access the burnt out bulbs, I needed to back it up about 6 feet. I started it, and immediately put it in reverse and backed up, shut it off, replaced the bulb, started it again and put it back in it's spot. Then I noticed a trail of transmission fluid on the floor under the passenger side. I checked under the hood, and could see that it had come out of the top of the dipstick tube, and drained down the engine compartment fender well. The next day, I decided to make a rolled paper towel plug and place it about an inch into the dipstick tube. This time, I let it idle for about 5 minutes in Park, then shifted it to N for about 5 minutes more, then back and forth from R to D, and let it idle in D for a few more minutes. Pulled out the paper towel plug, and not a drop of transmission fluid was on it.
So, was the cause of the spew just putting it in Reverse as soon as I started it because fluid had leaked down to the pan from another part of the transmission while it sat for a month?
Also noticed that the rubber at the top of the dipstick was hard, old and split, so got a new dipstick to replace that one.
I will let it warm up a little from now on when it has been sitting, and hoping not to need a rebuild just yet.
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  #2  
Old 12-02-2016, 05:32 PM
Joe Johnston Joe Johnston is offline
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MY (possibly wrong) thoughts are the car sat long enough for the torque converter to drain fluid into the transmission. Shifting quickly into gear did not give enough time for all of the fluid to return and at that point was overfilled spewing the ATF out the nearest opening. Letting the car run a bit let the levels stabilize. I wouldn't worry about it until Spring and then check the level of the ATF according to the directions in your manual.
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Old 12-02-2016, 08:06 PM
elijahbird7 elijahbird7 is offline
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I agree with you completely. The first person I asked is my older brother who owns a tractor repair business. He was sure it was the transmission cooling section in the radiator leaking coolant into the transmission fluid. The radiator and cooling lines were replaced about a year ago, so that didn't make sense. I checked the radiator overflow tank, and it was exactly where it should be, and there was no oil floating in there..
2nd friend, a retired mechanic said there should be a transmission vent that could be clogged. I checked the Shop Manual, and couldn't find anything about a vent.
So, I will just make sure to let it run awhile before putting it in gear after it has been hibernating.
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Old 12-02-2016, 09:29 PM
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jopizz jopizz is offline
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There's a small vent fitting on the passenger side of the transmission. My last Thunderbird transmission was building up pressure and spewing it out the dipstick tube. The fitting has a cap over it that's supposed to let air out but it was rusted shut. Once I loosened the cap it stopped leaking.

John
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Old 12-02-2016, 10:33 PM
elijahbird7 elijahbird7 is offline
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Do you know of any diagrams that show where that is? I looked at all of the diagrams in the Shop Manual, and didn't see any reference to where it is.
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Old 12-02-2016, 11:08 PM
olevet olevet is offline
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Quote:
Originally Posted by elijahbird7 View Post
Do you know of any diagrams that show where that is? I looked at all of the diagrams in the Shop Manual, and didn't see any reference to where it is.
What transmission do you have, already been said but i remember My Dad always letting a car warm up before ever shifting it, Mine has a Tube that curves over the top of the Trans from drivers side to passenger side , its on top . Make sure its clear or has been said the vent cap is loose
Good luck
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Old 12-02-2016, 11:57 PM
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Quote:
Originally Posted by elijahbird7 View Post
Do you know of any diagrams that show where that is? I looked at all of the diagrams in the Shop Manual, and didn't see any reference to where it is.
Here's a picture of the transmission I borrowed from Dave Dare's rebuild site. I rotated it to look as it would be mounted in the car. You can see it in the upper right corner above the cooler line. It's just a fitting with a round cap over it. The cap is pressed on and should move freely allowing air to escape.

John
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File Type: jpg trans venta.jpg (231.8 KB, 43 views)
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Old 12-03-2016, 09:58 AM
elijahbird7 elijahbird7 is offline
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Thanks John, always great knowledge and experience on this site!
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Old 12-03-2016, 10:24 AM
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You're welcome. That's why we're here.

John
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