Been there, done that. Your seals are shot. If the transmission is "whinning" then it's dry. I lost my seals and then the fluids, but drove it for a while like that and it worked perfectly. Your looking at a new transmission rebuild, down here it will run you about 1500. Sorry.
Water In Trans. Fluid...Please Help ASAP!
- Thread starter Schmoe
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No, no, it's not out of fluid...it was full (actually, when I pulled the fill plug, fluid came out, which means that more fluid was in there than when I filled it up!), except like I said, the fluid was light brown, which we all know as the sign of water in your oil.
I'm trying to figure out how water is getting in...
Kestas
Staff member
Are we talking ATF or motor/gear oil for the original charge in the transmission?
It's gear oil.
Ughh...where is this water coming from!?!
Been through any deep water recently? That's the culprit. If you bought the truck used, the previous owner may have done this without bothering to tell you. Yep, you're looking at a rebuild, primarily bearing replacement.
Except in a dire emergency, never try to drive through deep water. Never. This is what happens. Since you have water in your transmission, check your differential(s) too.
Except in a dire emergency, never try to drive through deep water. Never. This is what happens. Since you have water in your transmission, check your differential(s) too.
Haven't been through deep water recently, and I changed the fluid myself right after I got the truck (just to get the old stuff out!)
Only thing I can think of is that there is a breather hose on the top of the transmission is sucking in water somehow.
Yes, I know about water crossings...I'm a country boy.
As some of you know, I have a '92 Chevy 1500 with the 4.3L and a 5-spd. manual, which I believe is a NV4500.
Anyways, I've noticed two things recently:
1. Hard, rough shifting.
2. Noises coming from the transmission
So after driving home for the weekend, I decided to pull the plug and check the fluid...well, guess what..
It's got water in it, no doubt...the fluid is a nice, light brown color...just the color we all NEVER WANT TO SEE!
What in the world could be causing this?
Thank you for your help,
Jelly.
Anyways, I've noticed two things recently:
1. Hard, rough shifting.
2. Noises coming from the transmission
So after driving home for the weekend, I decided to pull the plug and check the fluid...well, guess what..
It's got water in it, no doubt...the fluid is a nice, light brown color...just the color we all NEVER WANT TO SEE!
What in the world could be causing this?
Thank you for your help,
Jelly.
Sorry, Jelly. I figured you knew better than to drive through deep water. It just seemed like the obvious question to ask. Now I'd suspect the radiator. Keep in mind that your ATF runs through lines to the radiator for cooling. If there's a fault with the ATF lines inside the radiator, I could see coolant getting into the transmission. Check your coolant to see if there are any signs of contamination, but since the coolant is pressurized, the contamination is more likely to have gone the other way--into the ATF.
You realize it is a manual transmission, right?
doesnt gear oil like to absorb moisture or is that brake fluid?
id just first change the fluid and see whats up...
id just first change the fluid and see whats up...
Kestas
Staff member
Gear oil doesn't absorb water in the sense that brake fluid does. But water can get mixed into the oil drastically changing the lubrication characteristics of the oil.
I agree with digitaldrifter. Change the oil. Then keep a keen eye on the fluid. The contamination you have for some reason may have been an isolated incident, and you may never find out what happened. If it happens again, then you can take a closer look.
I agree with digitaldrifter. Change the oil. Then keep a keen eye on the fluid. The contamination you have for some reason may have been an isolated incident, and you may never find out what happened. If it happens again, then you can take a closer look.
I third that motion. Get some cheapo gear lube, dump it in there and see if that improves the sound and shifting. If water has been in ther for a long time, the gears and bearings have a coating of varnish like gunk that is very abrasive. In this case you are lookign at a rebuild.
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