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Help! 95 Coupe, bell housing trans fluid leak

john6277

Member
Joined
Aug 12, 2014
Messages
17
Location
Florida
Corvette
1995 base Corvette - Red / Red
I'm looking for some experienced advice on this leak issue - hopeful a minor issue. C4 95 Coupe has 80K. I bought it 6 months ago and with no service records I had trans fluid and filter changed, as it looked pretty dirty. That was 6,000 miles ago and now it has just started a trans fluid leak which is a small amount - maybe 1 or 2 teaspoon each time I drive it. The trans fluid is dripping from what I would call the bell housing between the engine and transmission. This bell housing has a 3/16" or so weep hole at the very bottom center - this is about 2 inches directly behind the oil pan drain plug. This drip has never happened before.
What are the logical steps? I am considering a try for a transmission leak additive like STP or Lucas. Can I just plug this weep hole to contain the fluid, or did a plug just fall out? Lastly, I've had good repair service at a NAPA service center, is this a big enough deal to spend the $1,000 or whatever for a fix? Any help is appreciated, thanks John :).
 

Hib Halverson

Technical Writer for Internet & Print Media
Joined
Jan 10, 2001
Messages
13,453
Location
CenCoast CA
Corvette
71 04 12 19
The front pump seal, input shaft seal or the torque convertor is leaking.

The right way to fix that is to have the transmission removed and either resealed or overhauled.

I don't recommend pour-in transmission "stop-leak" products and no way would I seal up the weep hole hoping that the leakage will be contained.
 

john6277

Member
Joined
Aug 12, 2014
Messages
17
Location
Florida
Corvette
1995 base Corvette - Red / Red
Update

I'm looking for some experienced advice on this leak issue - hopeful a minor issue. C4 95 Coupe has 80K. I bought it 6 months ago and with no service records I had trans fluid and filter changed, as it looked pretty dirty. That was 6,000 miles ago and now it has just started a trans fluid leak which is a small amount - maybe 1 or 2 teaspoon each time I drive it. The trans fluid is dripping from what I would call the bell housing between the engine and transmission. This bell housing has a 3/16" or so weep hole at the very bottom center - this is about 2 inches directly behind the oil pan drain plug. This drip has never happened before.
What are the logical steps? I am considering a try for a transmission leak additive like STP or Lucas. Can I just plug this weep hole to contain the fluid, or did a plug just fall out? Lastly, I've had good repair service at a NAPA service center, is this a big enough deal to spend the $1,000 or whatever for a fix? Any help is appreciated, thanks John :).

My Update. After really giving the underside a good wipe down and restarting the engine, I now believe the bell housing area is not the source of the drip. It is above the trans drain pan on the passenger side front. The dipstick/filler tube looks to be the correct area of the leak source, which so far is maybe a 1/2 cup total over 1 week. I've read on other posts that the gasket is probably shot after 20 years. Will give it to the NAPA mechanic tomorrow as I know my limitations. Thanks for the help. John
 

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