Transmissions and Drivetrain Need help with your trans? Problems with your axle?

T-5 noises

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Old Jul 7, 2006 | 04:49 AM
  #1  
fire350tpi's Avatar
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From: Middleboro, MA
Car: 1988 Pontiac trans am/gta
Engine: 350
Transmission: 700r4
Axle/Gears: 3.23's
T-5 noises

when shifting down, in between all gears it seems * i can double check *


Makes a wining noise going into the next lower gear and is tough to push in then it pops in

im thinking it could maybe use some New tranny fluid and a few bearings but i dont feel like tearing into it atm
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Old Jul 7, 2006 | 07:06 AM
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Car: Yes
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Transmission: Sometimes
Axle/Gears: Behind me somewhere
Sounds pretty normal.

Think about what you're having to do when you downshift: you're speeding up the clutch disc from whatever RPM it happens to be at at the moment, to whatever RPM the engine will also be at in the new gear. So if you're going from let's say 4th to 2nd at 45 mph, that disc has to go from about 2500 RPM or whatever, to about 5000 RPM. That's ALOT ALOT of energy.

The whining noise is the countergear bearings and all the various other parts that have to speed up along with the clutch disc.

New fluid is usually a good idea, within reason. Just making sure it's full is pretty smart too. I'd leave the bearings alone though, since it doesn't sound to me like there's anything wrong with them.
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Old Jul 7, 2006 | 11:58 AM
  #3  
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From: Saskatchewan
Car: 84 Z28HO
Engine: 350 summit block
Transmission: T5
Axle/Gears: 3.73 10bolt
My T5 makes the same noise, before rebuild, and after.
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Old Jul 7, 2006 | 01:04 PM
  #4  
Shagwell's Avatar
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From: Southwest Florida
Car: projects.......
normal.
- the syncros have to come up to speed for a down shift, as with any other manual trans...
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Old Jul 7, 2006 | 01:54 PM
  #5  
fire350tpi's Avatar
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From: Middleboro, MA
Car: 1988 Pontiac trans am/gta
Engine: 350
Transmission: 700r4
Axle/Gears: 3.23's
alright, good i just wanted to know... not to good with transmissions

I did notice a small leak coming from near the bellhousing * tiny drops*

so it could be a bit low... Ive heard various problems with people pulling the wrong plug etc

Is there a sticky guiding you on how to do a fluid change on a t-5?
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Old Jul 7, 2006 | 09:22 PM
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The easiest way would be to pull the lower plug on the pass. side and let it drain out. Then remove your shifter and pour in the fluid through the shifter area.

If you dont do that, then you need to get one of those hoses with the caps or a funnel or something to get it in the top hole on the pass side.

I just did the first one pretty recently. Took about 10 minutes tops to pour in the 3 quarts of ATF.

I used Mobil 1

Last edited by JB22; Jul 7, 2006 at 10:23 PM.
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Old Jul 7, 2006 | 09:43 PM
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sofakingdom's Avatar
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Car: Yes
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Transmission: Sometimes
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top hole on the drivers side
NO!!! NO!!!!! NO!!!!!!!!

That's the one that if you take out, the transmission falls apart.

The drain and fill holes are BOTH ON THE PASS SIDE.
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Old Jul 7, 2006 | 10:24 PM
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bleh... I edited it... Thats what I meant to say...
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Old Jul 7, 2006 | 10:25 PM
  #9  
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From: Connecticut
Car: '89 Firebird Formula
Engine: 305 TBI
Transmission: T5
thank god you were a mere 21 minutes behind the last guy
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Old Jul 8, 2006 | 12:17 AM
  #10  
fire350tpi's Avatar
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From: Middleboro, MA
Car: 1988 Pontiac trans am/gta
Engine: 350
Transmission: 700r4
Axle/Gears: 3.23's
ok Passenger side, the giant nut looking thing im guessing


it takes exactly 3 quarts?
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Old Jul 8, 2006 | 12:45 AM
  #11  
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I think the book says 2.9 quarts. But if your going to be going through the top plug on the pass. side it will run out if its over full.
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Old Jul 8, 2006 | 12:58 AM
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fire350tpi's Avatar
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From: Middleboro, MA
Car: 1988 Pontiac trans am/gta
Engine: 350
Transmission: 700r4
Axle/Gears: 3.23's
i could drain it, plug the drain plug and then open the top plug, fill from the shifter and when it drains out of it its full


lol?
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Old Jul 8, 2006 | 06:08 AM
  #13  
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Car: Yes
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Transmission: Sometimes
Axle/Gears: Behind me somewhere
Yup, that would do it.

Or, just dump in all 3 quarts. I doubt the extra ounce or 2 will hurt anything; especially not if the trans leaks. That just gives you a little extra time before it runs dry again.
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Old Jul 8, 2006 | 03:25 PM
  #14  
fire350tpi's Avatar
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From: Middleboro, MA
Car: 1988 Pontiac trans am/gta
Engine: 350
Transmission: 700r4
Axle/Gears: 3.23's
cool thanks alot guys!
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