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Old 03-21-2011, 08:50 PM   #1
3r!c84
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th350 leak

when my truck sits it leaks atf. but not so much when its running and under pressure ? anyways . looks like from the lock up switch for the trrouqeconvertteer lock up. witch us un-hooked. any ideas? the shifter seal is new. and the pan gasket is new

84 th350C
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Old 03-21-2011, 08:59 PM   #2
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Re: th350 leak

could be tailshaft seal, maybe speedo cable/gear area....??
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Old 03-21-2011, 09:24 PM   #3
notrailerqueens
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Re: th350 leak

i know mine will leak outta the tail shaft if she sits for a while
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Old 03-21-2011, 09:27 PM   #4
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Re: th350 leak

no its more forward then that. drivers side. forward of the speedo
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Old 03-21-2011, 10:38 PM   #5
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Re: th350 leak

found the leak. its the lock up plug up the drivers side. anyone know where i can get a new plug? even know im not hooking itup. just to hold fluid from coming out of the thing
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Old 03-21-2011, 11:44 PM   #6
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Re: th350 leak

I replaced mine 6 or 8 years ago. I bought it locally from a place that most of the transmission shops buy from. I looked on bulkpart.com, but couldn't find it. I have never dealt with them, but have seen others recommend them.

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Old 03-21-2011, 11:49 PM   #7
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Re: th350 leak

vent is on driver side toward the top...reach up there and see if fluid is coming down the side from top.
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Old 03-22-2011, 12:00 AM   #8
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Re: th350 leak

Quote:
Originally Posted by fattyarbuckle View Post
vent is on driver side toward the top...reach up there and see if fluid is coming down the side from top.
nope not there. its the plug. i drained the fluid and cleaned the area and put rtv all around it. going to add atf tomorrow and see if it leaks
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