Need Help With C6 Tranny!!!!!!!!
Thread Starter
|
New User
Joined: Jun 2004
Posts: 9
Likes: 0
Need Help With C6 Tranny!!!!!!!!
Hey,
My Truck runs fine,Trans shifts right for about 6 miles,Then the trans acts like it's overheating and it won't hold gear.Have changed the fluid and filter and torque convertor, And that didn't help,Any ideas? Thanks Lisa!!!
My Truck runs fine,Trans shifts right for about 6 miles,Then the trans acts like it's overheating and it won't hold gear.Have changed the fluid and filter and torque convertor, And that didn't help,Any ideas? Thanks Lisa!!!
Laughing Gas
Joined: Apr 2003
Posts: 837
Likes: 2
From: Minnesota
This is an off the top WAG but sounds like a blocked/crimped/damaged cooler line.
Was the old fluid really dark and burnt smelling?
Has the new fluid discolored already?
How long have you had this truck?
Who serviced the transmission ... yourself, friend, quickee oil change place
, knowledgeable technician?
This is not a good thing.
Was the old fluid really dark and burnt smelling?
Has the new fluid discolored already?
How long have you had this truck?
Who serviced the transmission ... yourself, friend, quickee oil change place
, knowledgeable technician?This is not a good thing.
Thread Starter
|
New User
Joined: Jun 2004
Posts: 9
Likes: 0
Tranny Problem!!!!!
Hey,
Thanks for the input! Yes the fluid was dark and burnt smelling, And the new fluid is starting to get dark now.We bought it as a repo, and serviced it at home, the filter screen was plugged up on one end.We replaced the torque convertor when we seen that the fluid was so dark.What do you suggest?
Thanks! Lisa.
Thanks for the input! Yes the fluid was dark and burnt smelling, And the new fluid is starting to get dark now.We bought it as a repo, and serviced it at home, the filter screen was plugged up on one end.We replaced the torque convertor when we seen that the fluid was so dark.What do you suggest?
Thanks! Lisa.
Posting Guru
Joined: Jun 2001
Posts: 1,208
Likes: 0
From: Conyers
Well...since the fluid was dark and is turning dark, your tranny is overheating. Your best bet would be to take out the valvebody, clean it up, inspect it for any signs of wear, reassemble and reinstall it.
Thread Starter
|
New User
Joined: Jun 2004
Posts: 9
Likes: 0
Tranny Problem!!!!!
Hey,
Thanks! We are trying to figure out why it is over heating.We think it might have something to do with the cooler.Whoever had the truck last,sure didn't try to take care of it at all! Any suggestions on how to flush the cooler? Or can it be flushed? Thanks!! Lisa.
Thanks! We are trying to figure out why it is over heating.We think it might have something to do with the cooler.Whoever had the truck last,sure didn't try to take care of it at all! Any suggestions on how to flush the cooler? Or can it be flushed? Thanks!! Lisa.
Senior User
Joined: Nov 2003
Posts: 284
Likes: 1
From: Beaverton, Oregon
I used a cooler flush system once (a while ago). It was a pressurized can of some kind of solvent that had a fitting on one end. Disconnect both ends of the trans line and connect the can to one side and press the valve until nothing but clear (soapy) solvent comes out....then do it in reverse.
This was like 10 years ago and I don't remember the brand, but it worked great. I got it at a transmission shop after I blew out the band on my 700R4 in my IROC (too much power from my built motor).
I know it's short on the details, but I hope that helps out a little bit...
Dan Martin
1986 F350 Crewcab Dually, 460, C6
This was like 10 years ago and I don't remember the brand, but it worked great. I got it at a transmission shop after I blew out the band on my 700R4 in my IROC (too much power from my built motor).
I know it's short on the details, but I hope that helps out a little bit...
Dan Martin
1986 F350 Crewcab Dually, 460, C6
Thread Starter
|
New User
Joined: Jun 2004
Posts: 9
Likes: 0
Tranny Problem!!!!!
Thanks!
I'll check it out today.Seems like everytime we turn around, something else goes wrong!! Maybe this will work.Thanks again!! Lisa.
I'll check it out today.Seems like everytime we turn around, something else goes wrong!! Maybe this will work.Thanks again!! Lisa.
Trending Topics
Senior User
Joined: Nov 2003
Posts: 284
Likes: 1
From: Beaverton, Oregon
My suggestion is to take this sucker into a good transmission shop that you trust and have them go through it and tell you what is wrong. Basically, how did the fluid get so burnt? It could be something more serious like a burnt clutch pack or slipping band that needs attention.
Better not to throw good money after bad...
Dan
Better not to throw good money after bad...
Dan
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Elder User
Joined: Oct 2002
Posts: 513
Likes: 0
From: Lincoln NE
Could cooler at the front could be clogged on the outside with dirt and bugs along with your radiator. It may not be getting enough air. Step dad had that problem in his '92 f150. He basically burned the tranny up cause the cooler was plugged in the front.
Just a thought. Hope you figure her out!
Just a thought. Hope you figure her out!
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
How much sediment was in the pan? if there was a lot, or was in any kind of straight line formation, rebuild required. Some sediment is alway normal, but that's not alot, if you could run your finger through it and really feel it, that's too much.
Laughing Gas
Joined: Apr 2003
Posts: 837
Likes: 2
From: Minnesota
Originally Posted by DanMartin
My suggestion is to take this sucker into a good transmission shop that you trust and have them go through it and tell you what is wrong.
For regular transmission servicing I've been using the Wynn's system in my vehicles for a few years now and believe it's the only way to go. Clyde's C6 gets the treatment every couple years. I don't put on a lot of miles, but they're hard ones.
http://www.wynnsusa.com/AMP/TRANS.asp
It starts out with the addition of a cleaner that is curculated through the entire tranny, including all the ports and passages and then the old fluid is pumped out as the new stuff, with an additive for seal rejuvination, etc., replaces it.
IMHO the old "drop the pan, replace the filter and add fluid" routine is akin to changing the engine oil filter and just replacing the quart that was in the filter. Think about it ...
Roger
63,000 original miles
Elder User
Joined: Oct 2002
Posts: 513
Likes: 0
From: Lincoln NE
So, say I think the valve bodies in my c6 are "sticky" in my tranny cause it doesn't downshift to second after turning a corner. It stays in 3rd gear even only going 15-15 mph. Will this Wynn's help clean those supposedly "sticky" valve bodies. Is it something you run for a while and then drop or does it just stay in there with the regular tranny fluid all the time?
I've already changed the tranny fluid, filter, drained the torque converter, and changed the vacuum modulator. It downshifts fine on the highway and from a stop light it'll drop to 1st like it should. I kinda gave up on fixing it figuring I'd wait to try cleaning the valve bodies whenever the tranny had to come out again.
I've already changed the tranny fluid, filter, drained the torque converter, and changed the vacuum modulator. It downshifts fine on the highway and from a stop light it'll drop to 1st like it should. I kinda gave up on fixing it figuring I'd wait to try cleaning the valve bodies whenever the tranny had to come out again.
Laughing Gas
Joined: Apr 2003
Posts: 837
Likes: 2
From: Minnesota
Originally Posted by nzabka
Will this Wynn's help clean those supposedly "sticky" valve bodies.
The way it works is the machine is hooked into the cooler line loop and the vehicle is run so the tranny fluid (with the cleaner additive added) circulates through everything. We run it on a hoist so we can lift the wheels off the ground and actually "run it through the gears" and all the related ports and passage, etc. The machine uses two tanks, new fluid with a Wynn's additive in one and a "dump tank" for the old, dirty fluid.
After the old fluid w/cleaner has circulated sufficiently a valve is thrown which uses the new stuff w/additiveto push the old stuff (with the cleaner, sludge and varnish in suspension) out of the system into the "dump tank". Almost a 100% fluid change.
I did Clyde's filter on the first "go round" and have done the "flush & fill" since. It seems to shift firmer and smoother (sounds like a contradiction), I think ... for me ... it was money well spent.
Maybe someone else has experience with it also.
New User
Joined: Jul 2004
Posts: 15
Likes: 0
From: Lower Michigan
Used to perform this same process at a "quick lube" facility. Works great and you can really see the difference. Our "machine" had a clear tube where you could see the new fluid going out and the old coming back in. Rarely did the two look alike.