Tranny Problems... Solutions?
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Junior User
Joined: Jun 2009
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Tranny Problems... Solutions?
I just bought a 2002 F250 with 200k on it. Dsl of course. Anyways I think it has the original tranny in it and I knew this would be a problem that I would have to deal with. The tranny *clunks* between gears somewhat to agressively. I know it's a truck but this is just way too rugged of a gear change.
My question is: is there any way to prolong the need for a rebuild? Will changing the fluids help smoothness at all? Any tranny cocktail gimmick I can toss in there to make things a bit better?
Thanks,
Scott
My question is: is there any way to prolong the need for a rebuild? Will changing the fluids help smoothness at all? Any tranny cocktail gimmick I can toss in there to make things a bit better?
Thanks,
Scott
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
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From: SE Florida
Changing the fluid usually will make it shift smoother.
There could be reasons it is shifting hard that a fluid change won't help. There could be a stuck accumulator valve, or a bad pressure control solenoid, etc.
There could be reasons it is shifting hard that a fluid change won't help. There could be a stuck accumulator valve, or a bad pressure control solenoid, etc.
Snowboard season cometh..
Joined: Jan 2006
Posts: 5,406
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From: Gulf Coast of Florida
Mark -
Could it possibly also be that there is either a chip on the ECU, or that a prior owner used a programmer that is affecting the shifting? Maybe even a shift kit/valve body of some sort?
Scott -
do you know the prior owner by any chance? any way to find out of the truck was modified at all, especially in regards to a programmer?
Could it possibly also be that there is either a chip on the ECU, or that a prior owner used a programmer that is affecting the shifting? Maybe even a shift kit/valve body of some sort?
Scott -
do you know the prior owner by any chance? any way to find out of the truck was modified at all, especially in regards to a programmer?
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Junior User
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Yes I could call the PO and see but I doubt it, everything on the truck was bone stock and it seems even general matainance was disregarded. I'll start by changing the tranny fluid, after that I need to look into replacing parts. It really *clunks* into gear from time to time. Most of the time it just feels like a clutch drop in between gears on a manual.
Could it be that the gears are just that worn down? A failing u-joint wouldn't put all this clunking through the drive-train between gears would it?
Thanks guys I really do appreciate it!
Scott
Could it be that the gears are just that worn down? A failing u-joint wouldn't put all this clunking through the drive-train between gears would it?
Thanks guys I really do appreciate it!
Scott
Duct Tape Tech.
Joined: Jul 2009
Posts: 2,381
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From: San Antonio Tx.
It could be A bad U-joint or a dry slip joint, even a bad rubber mount on the center carrier bearing. This is all stuff you will need to check out any way being a new ( to you ) truck.
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Well I bought some of this... http://www.lucasoil.com/products/dis...smission%20Fix
But I think I'm going to return it based on what I've read it's a complete gimmick. Hopefully it is not the trans. but regardless I'm gonna change the fluid this weekend.
Thanks for all the input guys I do appreciate it
-Scott
But I think I'm going to return it based on what I've read it's a complete gimmick. Hopefully it is not the trans. but regardless I'm gonna change the fluid this weekend.
Thanks for all the input guys I do appreciate it
-Scott
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Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
Pay close attention to what Mark Kovalski said above.
The line pressure modulator valve has a tendency to "stick" at high mileages, causing erratic shifting points. Since it's common, Sonnax has developed a fix, and it's easy to install yourself if you're mechanically-inclined.
It wouldn't hurt to drop the pan anyway on your first oil change, just to see what's in there, and to clean the ring magnet around the drain plug.
See:
http://www.bulkpart.com/Merchant2/me...roduct_Count=3
Pop
The line pressure modulator valve has a tendency to "stick" at high mileages, causing erratic shifting points. Since it's common, Sonnax has developed a fix, and it's easy to install yourself if you're mechanically-inclined.
It wouldn't hurt to drop the pan anyway on your first oil change, just to see what's in there, and to clean the ring magnet around the drain plug.
See:
http://www.bulkpart.com/Merchant2/me...roduct_Count=3
Pop
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Junior User
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Will it become apparent where this part "goes" onceI drop the pan? I've never really worked on an auto tranny before. If you've done it before how long of a job is it? I don't actually have to start pulling gears etc to gain access do I?
Thanks,
Scott
Thanks,
Scott
. Subscribing.
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
The "valve body" is essentially in two pieces, and you'll be pulling one part down by unbolting it. There are no ***** inside to lose or screw up. Only special tool you'll need is an inch-pound torque wrench to put it back together properly.
You should plan to change the fluid at the same time.
Pop
Hotshot
Joined: Jul 2003
Posts: 12,177
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From: Newport, WA
That's your oil pan, the shallow/deep pan is the trans pan. Looking at the oil pan, I think you have some serious cleaning to do so you can figure out where all that crud came from!
