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Old 01-23-2012, 07:53 AM
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57 Corvette Powerglide pukes fluid

Okay. A buddy of mine asked for help figuring out what causes his Powerglide transmission to suddenly puke a qt of fluid out the filler tube on a cold start. At least I think it is coming out of the filler tube. I don't even know where to start.

History of the car;

Original transmission.

Car has less than 10 k original miles.

Factory Dual 4 barrel setup with the Powerglide transmission.

Anyone know a starting point?

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Old 01-23-2012, 08:05 AM
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Originally Posted by waltmail
Okay. A buddy of mine asked for help figuring out what causes his Powerglide transmission to suddenly puke a qt of fluid out the filler tube on a cold start. At least I think it is coming out of the filler tube. I don't even know where to start.

History of the car;

Original transmission.

Car has less than 10 k original miles.

Factory Dual 4 barrel setup with the Powerglide transmission.

Anyone know a starting point?
The first obvious thing is the fluid level. If the trans was filled cold, the dip stick read wrong, or wrong stick to begin with it could be overfilled.

Next would be a plugged vent, followed by any water in the trans, but that would be a problem once the fluid was hot enough to cause the water to separate out of the fluid and not at cold start up. Plus water would delaminate the friction material from the clutches.

I'm not sure if excessive pressure could cause this, maybe someone will add something.
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Old 01-23-2012, 08:36 AM
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Could be the fluid is draining put of the torque converter and causing an over fill condition in the pan. I would check fluid level after it pukes which should show low. I would restart immediately to see if it pukes again and if not, let it set for about an hour and see if it pukes again on start up (no new fluid added). I would also confirm where the fluid is really leaking from. I assumed you did check the vent to ensure it was clear.

Trees
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