pinion seal problems
well i just got back from the PONTIAC dealership (i went in for a leak coming from the rearend) and there anwser was.... we're not sure why its leaking, we're going to call our tech support dept. and get back to you.
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From: Spring Hill, TN
I'm sure the guy that started this thread has a legit problem, but just for the sake of anyone else happening along I'll point something out:
A lot of 'leaks' are really fluid coming out the breather at the top of the pumpkin. Perhaps even enough to drip on to the ground, but mostly it's seen as a wet stain on the housing. You can tell where the fluid is coming from by looking for a thin transverse line of fluid on the underbody (which indicates pinion seal) or just a broad stain all around (breather hole).
If it's the breather, that can either be ignored or solved via a longer breather tube.
A lot of 'leaks' are really fluid coming out the breather at the top of the pumpkin. Perhaps even enough to drip on to the ground, but mostly it's seen as a wet stain on the housing. You can tell where the fluid is coming from by looking for a thin transverse line of fluid on the underbody (which indicates pinion seal) or just a broad stain all around (breather hole).
If it's the breather, that can either be ignored or solved via a longer breather tube.
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had mine fixed again, and another time, and it leaked again both times 
. been leaking ever since. a guy i know that has a shop told me to bring it to him, so i did. he took it all apart and actually cleaned everything up and looked at it. it turns out my yoke was all pitted up. how does that happen? i went and got a spare yoke out of a buddy of mines extra rear, so i guess tommorow i will finally see if my woes are over.
. been leaking ever since. a guy i know that has a shop told me to bring it to him, so i did. he took it all apart and actually cleaned everything up and looked at it. it turns out my yoke was all pitted up. how does that happen? i went and got a spare yoke out of a buddy of mines extra rear, so i guess tommorow i will finally see if my woes are over. TECH Regular
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From: Spring Hill, TN
Originally Posted by luvmeZ28
had mine fixed again, and another time, and it leaked again both times . been leaking ever since. a guy i know that has a shop told me to bring it to him, so i did. he took it all apart and actually cleaned everything up and looked at it. it turns out my yoke was all pitted up. how does that happen? i went and got a spare yoke out of a buddy of mines extra rear, so i guess tommorow i will finally see if my woes are over.
. been leaking ever since. a guy i know that has a shop told me to bring it to him, so i did. he took it all apart and actually cleaned everything up and looked at it. it turns out my yoke was all pitted up. how does that happen? i went and got a spare yoke out of a buddy of mines extra rear, so i guess tommorow i will finally see if my woes are over. TECH Regular
Joined: Feb 2003
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From: Spring Hill, TN
Originally Posted by ss1129
mine leaks like a bitch too. Never been apart..that I know of. Isnt the point of the seal to go around the yoke?
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Originally Posted by jyeager
No, the seal goes around the pinion shaft, the yoke bolts on to the splined end of the pinion shaft. The yoke is what the u-joint bolts in to.
gotcha...so is it a bitch to change out?
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From: Keller, Texas DFW
Originally Posted by Mike2000Z28
Not really, sometimes if the shaft is out of balance and/or bad ujoints you may wear a grove in the yoke pinion shaft and that will cause the pinion seal to leak.
