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Old 02-12-2006, 01:40 PM   #1
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Can too much transmission fluid hurt the shifting of the transmission???

I checked the dip stick and it's way off from where it's suppose to be. When I got a tranny cooler I added half a quart, so can too much tranny fluid affect the shifting?
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Old 02-12-2006, 01:41 PM   #2
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I doubt it, it just sits

I doubt it, it just sits around and lubes, not like it's exerting pressure or it'd shoot out the fill hole.
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Old 02-12-2006, 01:48 PM   #3
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I checked the dipstick and

I checked the dipstick and it's 1 inch higher than H, which is a little more than should be in there. I'm afraid to take out some fluid because I have a tranny cooler and it won't cool the fluid.
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Old 02-12-2006, 02:11 PM   #4
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I've always heard that

I've always heard that aoutmatic ransmissions were kind of fussy about fluid levels. If you had some way of drawing a little out through the filler pipe it may help you. I had to do this on my Durango one time. It had a factory installed tranny cooler and it was showing overfull on the dipstick.
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Old 02-12-2006, 02:15 PM   #5
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Thanks for the advice Larry,

Thanks for the advice Larry, anyone else have same opinion as Larry?
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Old 02-12-2006, 02:44 PM   #6
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a quick google search turns

a quick google search turns up no shortage of pages warning against overfilling. to be safe, i'd remove any excess fluid.
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Old 02-12-2006, 02:52 PM   #7
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Thanks, I'm going to remove

Thanks, I'm going to remove the excess fluid. I think there is 0.5-1 quart too much.
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Old 02-12-2006, 02:53 PM   #8
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If it's anything like oil...

If it's anything like engine oil, if you overfill it, it tends to become a foam becuase of the excessive movement against moving parts, and essentially renders the oil un-pumpable and won't get to vital parts. I'm thinking that trans fluid is similar, especially when pumping through a cooler. I know it's probably a pain to fill or drain, but I'd recommend getting the level within tolerances.

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Old 02-12-2006, 04:08 PM   #9
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I used a hand operated pump

I used a hand operated pump that I got from Autozone or someplace like that. It had a hose small enough that fit down inside the transmission dipstick tube. Much easier than taking the pan off and only takes a couple of minutes.
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Old 02-12-2006, 04:42 PM   #10
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Re: If it's anything like oil...

Quote:
Originally Posted by rh77
If it's anything like engine oil, if you overfill it, it tends to become a foam becuase of the excessive movement against moving parts, and essentially renders the oil un-pumpable and won't get to vital parts. I'm thinking that trans fluid is similar, especially when pumping through a cooler. I know it's probably a pain to fill or drain, but I'd recommend getting the level within tolerances.

RH77
The problem is that I have a tranny cooler so extra fluid is required but I don't know how much is required. So I'm going going to drain it till it touches high. Right now it's way too far from high.
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