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Apr 29, 2010 | 09:41 AM

#16

49 Ford F-1

Mountain Pass

Joined: May 2009

Posts: 235

Likes: 0

From: Snow Camp, NC

I'm on F150online also. I have pics of my truck on there. I'm 97 on 37s. I hate to hear that about the 5 speeds. Has anyone said anything about the t56s? I know they have like on downside with i think a spindle or something, but is all I know of.

Apr 30, 2010 | 08:28 AM

#17

Johnny Langton

Postmaster

Joined: Oct 2006

Posts: 4,171

Likes: 12

From: SE Texas

Quote:

Originally Posted by tmoney8772

I have a 2000 f150 xlt 5.4l 4x4. it has the 4r70w. is it supposed to have a 4r100? its been acting up when shifting from 2nd into 3rd. it revs higher than normal and then bumps into 3rd, i dropped the pan and changed filter and tranny fluid which seemed to fix the problem but after coming back from a snowmobile trip it has been acting up again. any thoughts on if its bad or should be changed again. if it has to be replaced can i just do a swap from a 70w to a r100 or is there computer programming stuff or anything for that matter i have to change. thanks

Like Douglas Walker found-I'll bet you have a broken accumulator spring,or possibly a valvebody gasket with a torn/damaged corner.. You'll need a valvebody gasket, and fluid/filter at the least,possibly an accumulator spring.
JL

Apr 30, 2010 | 10:47 PM

#18

RobbyMartin

Senior User

Joined: Apr 2004

Posts: 336

Likes: 0

Quote:

Originally Posted by Johnny Langton

Will this likely be the cause of a downshift issue as well? My truck revs to about 4000-4500 before it will kick down from 4th to 3rd if I do it abrubtly.

May 1, 2010 | 06:26 PM

#19

Johnny Langton

Postmaster

Joined: Oct 2006

Posts: 4,171

Likes: 12

From: SE Texas

Quote:

Originally Posted by RobbyMartin

Will this likely be the cause of a downshift issue as well? My truck revs to about 4000-4500 before it will kick down from 4th to 3rd if I do it abrubtly.

I found a torn/damaged valvebody gasket when we fixed this on my friend's truck. It was leaking fluid from around the valvebody causing a pressure loss and made it flare on downshifts.
JL

May 1, 2010 | 06:45 PM

#20

RobbyMartin

Senior User

Joined: Apr 2004

Posts: 336

Likes: 0

Quote:

Originally Posted by Johnny Langton

I found a torn/damaged valvebody gasket when we fixed this on my friend's truck. It was leaking fluid from around the valvebody causing a pressure loss and made it flare on downshifts.
JL

Would a shift kit be a good option for me or would you suggest something different?

May 1, 2010 | 07:37 PM

#21

Johnny Langton

Postmaster

Joined: Oct 2006

Posts: 4,171

Likes: 12

From: SE Texas

Quote:

Originally Posted by RobbyMartin

Would a shift kit be a good option for me or would you suggest something different?

No shift "kits".
If you want the shifts crisped up-I can tell you how to do it.
JL

May 1, 2010 | 08:06 PM

#22

RobbyMartin

Senior User

Joined: Apr 2004

Posts: 336

Likes: 0

Quote:

Originally Posted by Johnny Langton

No shift "kits".
If you want the shifts crisped up-I can tell you how to do it.
JL

I want that 4th to 3rd downshift corrected along with crispiness of upshifts.

Please tell me how to do it.

May 1, 2010 | 08:17 PM

#23

Johnny Langton

Postmaster

Joined: Oct 2006

Posts: 4,171

Likes: 12

From: SE Texas

Quote:

Originally Posted by RobbyMartin

I want that 4th to 3rd downshift corrected along with crispiness of upshifts.

Please tell me how to do it.

The downshift problem is likely a bad valvebody to case gasket-Change it. If you want to firm up the 1-2 shift-remove the lower spring from the 1-2 shift accumulator, and leave the upper in place. If you want to firm up the 2-3 shift, remove ALL springs from the accumulator and reinstall just the accumulator in the bore.
JL