tranny shift points
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Logistics Pro
Joined: Jun 2009
Posts: 4,116
Likes: 6
From: metairie, LA
tranny shift points
First of all, i want to say what a great help this sight is. Alot of my questions have been answered just by reading through other post. anyway my 97 250 has a neck breaking 2-3 shift. I saw where people drilled out the valve body to make this happen, how can i tell if this was done to my truck,if so, is it reversable? also sometimes it seems to up shift instead of downshifting when iam trying to accelerate. help.
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
That happened with mine after I drilled the Acc. Body and one hole was slightly too big.
Did it just happen suddenly or has it been like that since you owned the truck?
If it just started suddenly there might be something sticking. If not, check out this thread and you will see where the holes are drilled to do it.
https://www.ford-trucks.com/forums/7...ranny-mod.html
You have to drop the pan, pull the filter out and then take off the Acc. Body. It's the front-most piece in there.
If it is drilled out you can have the holes welded shut (not easy to do) or what I was told by a local tranny builder was to stick a small piece of wire through the hole and bend it on both sides so it blocks the hole.
Hope this helps! Good luck!
Oh yeah, is it harsh all the time? Or is it only harsh under hard throttle? Does it shift easier if you aren't giving it much gas?
Did it just happen suddenly or has it been like that since you owned the truck?
If it just started suddenly there might be something sticking. If not, check out this thread and you will see where the holes are drilled to do it.
https://www.ford-trucks.com/forums/7...ranny-mod.html
You have to drop the pan, pull the filter out and then take off the Acc. Body. It's the front-most piece in there.
If it is drilled out you can have the holes welded shut (not easy to do) or what I was told by a local tranny builder was to stick a small piece of wire through the hole and bend it on both sides so it blocks the hole.
Hope this helps! Good luck!
Oh yeah, is it harsh all the time? Or is it only harsh under hard throttle? Does it shift easier if you aren't giving it much gas?
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
Also make sure your fluid is clean, filter is good, proper amount of fluid?
Cargo Master
Joined: Jul 2006
Posts: 2,756
Likes: 38
From: Nampa, ID
Have you been able to check for trouble codes? That will go a long way in determining what the problem might be.
If you're getting a P0500 (Vehicle Speed Sensor Malfunction) you might need to replace the VSS to correct the problem. Have the code(s) cleared after you fix the problem.
Welcome to
If you're getting a P0500 (Vehicle Speed Sensor Malfunction) you might need to replace the VSS to correct the problem. Have the code(s) cleared after you fix the problem.
Welcome to
