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Over filling Automatic transmisison : What happens


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Working with this 96 GT I put the auto trans in, I was having a hard time getting a good reading while fililng it up with fluid. Since I had the trans apart and dumped as much out of the torque convertor while it was out, I wasn't sure how much it needed. Anyhow, Finally after letting it sit over night everything looked like it was a bit overfilled. It was just above the hot low mark while it was stone cold. I drove it a bit to see if things worked and I think it pushed fluid out the vent hose on the top. Will it do that until it reaches the correct level? Do I need to drain some out if it's only a little over? What am I risking if it's overfilled? I really know very little about automatics.

 

Thanks,

Keith

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when you tear apart an auto tranny you should have the drive wheels up off the ground (In this case all 4) and run the car in all of its drive gears for many minutes to make sure all the fluid is worked around and where it needs to be so it doesn't cause stress when you drive it up the road after putting a fresh tranny in it.

 

As for fluid checking....what Josh says....

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What is the level like when you check it on the hot marks?

 

What procedure are you using the check the level? You are leaving the car running, and cycling through the gears before you check it, right?

 

 

Well, I'm now doing exactly what the book says, which is what you said. At first I couldn't actually drive it and get it up to full temp for fear of damage due to not enough or way to much fluid. The problem is that when you add fluid it takes a very long time for it to drain down the tube and not leave confusing residue on the stick. After letting the car sit over night and trying everything again and also driving it, it appears that it is deed not overfilled, but at the same time I have a small leak somewhere that is leaking onto the exhaust. That is now the first thing to figure out.

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when you tear apart an auto tranny you should have the drive wheels up off the ground (In this case all 4) and run the car in all of its drive gears for many minutes to make sure all the fluid is worked around and where it needs to be so it doesn't cause stress when you drive it up the road after putting a fresh tranny in it.

 

As for fluid checking....what Josh says....

 

 

yup, yup. All that was done. We had fun watching all 4 wheels spin at different speeds. The fun of open diffs and slight rust build up on the rotors.

 

Keith

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yup, yup. All that was done. We had fun watching all 4 wheels spin at different speeds. The fun of open diffs and slight rust build up on the rotors.

 

Keith

 

that is my favorite part too. I like to make it go really fast sometime too....:-p

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