Rattle/"wah wah" noise after replacing rear crank seal

[CallMeSyd]

What pump rebuild pump are you referring to from TransGo? This kit? TransGo | 5R55W, 5R55S, 5R55N High Performance Valve Body Kit

I don't see any kit from them that specifically mentions the pump.

The valve body kit "SK 5R55W". The trans pump is a very simple thing it really doesn't have much involved. This kit includes the part to fix the pump noise. You will need to order the pump gasket separately. You can just buy the relief valve for the pump by itself, but then you will need to buy the seals and the alignment tool separately and the valve itself is over $40. If you buy the kit you also get all the valve body goodies. Whatever you decide to do.

 

[bmdubya1198]

The valve body kit "SK 5R55W". The trans pump is a very simple thing it really doesn't have much involved. This kit includes the part to fix the pump noise. You will need to order the pump gasket separately. You can just buy the relief valve for the pump by itself, but then you will need to buy the seals and the alignment tool separately and the valve itself is over $40. If you buy the kit you also get all the valve body goodies. Whatever you decide to do.

Gotcha, I just wanted to make sure that the pump isn’t holding anything together in the trans that will be a pain to put back. It looks very easy to replace, but I don’t want any surprises.

 

[CallMeSyd]

Gotcha, I just wanted to make sure that the pump isn’t holding anything together in the trans that will be a pain to put back. It looks very easy to replace, but I don’t want any surprises.

The pump doesn't hold anything together or affect anything when you remove it. Keep an eye out for any indications of binding or wear or anything abnormal as you remove TC and shaft, inspect flex plate, everything you can as you go.

 

[bmdubya1198]

Awesome, that's all I needed to know. I want this to be the LAST time the transmission comes out of this truck. I'll be sure to inspect everything carefully.

 

[CallMeSyd]

Awesome, that's all I needed to know. I want this to be the LAST time the transmission comes out of this truck. I'll be sure to inspect everything carefully.

Absolutely. Best of luck!

 

[bmdubya1198]

Update... parts have arrived, I plan to start teardown tomorrow (among several other projects, but we'll see what I can get done). Now the bad part... my dad complained of shift flares when it's cold now, but the shifting improved when the truck warmed up. Not what I wanted to hear.
I know a 2-3 flare is a common problem on these 5R55s, but would it make sense that the TC/pump damage is causing this issue directly, and the potental lack of line pressure hasn't damaged anything else? Of course, this is just spitballing, obviously there's no way to know without actually tearing into the transmission.
The delayed shifts (it's done it going into reverse when I moved it a few days ago) lead me to believe that it might just be general lack of pressure due to whatever is going on with the converter.

 

[bmdubya1198]

Just wrapped up the installation earlier this afternoon, and while the truck drives fine, I still hear some noises... I want to say I'm surprised, but I'm not lol.
Anyway, the wah-wah noise is gone, however I still hear a mild whine. All I can think is that there was a chain reaction that caused some internal damage... I really hope not, this is the third time I've had this transmission out. The fluid that came out had a sparkle to it, enough to concern me. I figured it was just from the torque converter (the shaft was very scored up).
Here's a video of the whine, you can hear it pretty clearly. New video by Alex P

While driving it home from my shop, I got a "check transmission" warning. It was still driving perfectly fine, no shift quality issues or anything. Checked on Forscan, it's P1744 (torque converter clutch system performance or mechanically stuck off). Maybe the fluid is low? I added some fluid to the converter (it sounded and felt like it was pre-filled at least a little bit) but it wasn't much, maybe 1/2 quart. That might have pulled down the fluid level after I filled it up, especially once I got on the highway and let it lock up.

 

[bmdubya1198]

This just keeps getting better! lol

I figured the fluid was low, so I went ahead and added some fluid, took it for a drive. All was well, no error came up. Came back, drained off the excess to level it, and drove it again. Within 1/2 a mile, it flared from first to second, then threw the check transmission warning once again. Still the same P1744 code present, which is strange as that isn't related to a 1-2 flare like this, but I guess low pressure would cause both of these issues.
As I said before, I still hear a hum. It's not nearly as noticeable as before the TC and pump, but it's certainly there. About the same if not slightly quieter than the last video I posted.

This is the fluid that came out when I leveled it... yeah, not looking good. It looks like the Venetian red pearl paint on my V70R! Lol
I'm afraid this is pretty bad news for the condition of the transmission. My dad probably should have stopped driving it long ago and replaced the TC right after the noise began.

Also took a closer look at the old pump today. The front bushing looks terrible. I noticed more scoring on the converter, pretty marred up on the flat pump drive section.

 

[CallMeSyd]

This just keeps getting better! lol

I figured the fluid was low, so I went ahead and added some fluid, took it for a drive. All was well, no error came up. Came back, drained off the excess to level it, and drove it again. Within 1/2 a mile, it flared from first to second, then threw the check transmission warning once again. Still the same P1744 code present, which is strange as that isn't related to a 1-2 flare like this, but I guess low pressure would cause both of these issues.
As I said before, I still hear a hum. It's not nearly as noticeable as before the TC and pump, but it's certainly there. About the same if not slightly quieter than the last video I posted.

This is the fluid that came out when I leveled it... yeah, not looking good. It looks like the Venetian red pearl paint on my V70R! Lol
I'm afraid this is pretty bad news for the condition of the transmission. My dad probably should have stopped driving it long ago and replaced the TC right after the noise began.
View attachment 440421


Also took a closer look at the old pump today. The front bushing looks terrible. I noticed more scoring on the converter, pretty marred up on the flat pump drive section. View attachment 440422 View attachment 440423 View attachment 440424 View attachment 440425

I was really hoping you'd get it worked out this time. That's an awful lot of glitter. The only thing I can suggest at this point is that the glitter is possibly from the old TC, and has now circulated throughout. In that case, you may very well have some clogging in the valve body. You can pull the valve body and inspect the valves and clean thoroughly with brake cleaner or if you ended up getting that TransGo kit you can go ahead and install that and thoroughly check all of the valves for proper movement or even find a guide or video to help you remove them all and clean them out, if you feel confident enough. Of course you could just replace the entire valve body but I'm not one to suggest throwing parts at stuff. If the glitter is from something else, then it is likely that you're due for a rebuild. I should have suggested pulling the overdrive planetary and checking the thrust bearings and overdrive sprag while you had the pump out but I didn't want you to go any further into it than necessary. The flaring that you mentioned does sound like a possible line pressure issue. That could be a pressure control solenoid but considering the glitter I am leaning much more toward a valve issue. This really hits me in the feels bro. It seems your initial issue may have caused further issues.

 

[bmdubya1198]

I was really hoping you'd get it worked out this time. That's an awful lot of glitter. The only thing I can suggest at this point is that the glitter is possibly from the old TC, and has now circulated throughout. In that case, you may very well have some clogging in the valve body. You can pull the valve body and inspect the valves and clean thoroughly with brake cleaner or if you ended up getting that TransGo kit you can go ahead and install that and thoroughly check all of the valves for proper movement or even find a guide or video to help you remove them all and clean them out, if you feel confident enough. Of course you could just replace the entire valve body but I'm not one to suggest throwing parts at stuff. If the glitter is from something else, then it is likely that you're due for a rebuild. I should have suggested pulling the overdrive planetary and checking the thrust bearings and overdrive sprag while you had the pump out but I didn't want you to go any further into it than necessary. The flaring that you mentioned does sound like a possible line pressure issue. That could be a pressure control solenoid but considering the glitter I am leaning much more toward a valve issue. This really hits me in the feels bro. It seems your initial issue may have caused further issues.

Yeah, I think you're right. I hate to blame my dad here (also because he's stubborn and won't admit to doing anything wrong in the first place ) but he should have pulled the trans back down the first time this happened. Oh well, hindsight is 20/20, right?

I felt the front overdrive drum (barrel? I'm not an auto transmission guy at all, so I'm not sure on the correct terminology) and it was smooth, just some dark material on my glove. Seems like normal wear to me, but I could be wrong. There was no damage from what I could feel. I didn't pull anything apart though.
I might as well drop the pan and clean out the valve body at this point, since it seems there's nothing to lose. I'm letting my dad borrow one of my cars so I can take a little time on this, and keep my fingers crossed that this transmission is okay. I agree that it seems that some debris may be sticking, and that make sense as far as the fluid level changing and being disturbed. Same goes for a line pressure issue really, overfilled it shifts fine, then turns to crap once it's at the correct level.

 

[bmdubya1198]

Alright, so I have installed a new-to-me used transmission, and all issues have been resolved. Shifts great, no noises. Finally! Now hopefully this will last a long time and I won't have to worry about it anymore.

 

[donalds]

Just keep up on fluid changes and don't drive the crap out of it

 

[Fix4Dirt]

View attachment 440421

for a second i thought it was some nice pearl flake in some candy red paint! nice hot rod... er.... trans fluid

 

[bmdubya1198]

Just keep up on fluid changes and don't drive the crap out of it

For sure going to keep up on fluid changes. Fortunately what came out of this transmission looked really good, so I’m planning on keeping it that way. It looks like it was a reman unit, but I don’t have specifics on that. My dad isn’t too hard on his vehicles, so I don’t see him having any issues with it.

for a second i thought it was some nice pearl flake in some candy red paint! nice hot rod... er.... trans fluid

That was my first thought when I looked at it. When I drained the old trans the last time, it had some larger chunks compared to what came from the fill plug.