4R100 maintenance

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Jan 7, 2004 | 08:57 PM

#16

cocot

Senior User

Joined: Mar 2003

Posts: 340

Likes: 1

From: NY

Quote:

Originally posted by 78fordman
My 4 speed 4r100 shifts 5 times, because the line pressure drop, due to too small of line pressure regulator, not enough oil can get through it, so a diablo line regulator is larger, and will help with a firmer shift.

Can you or anyone explain the shifting 5 times? I notice the same thing and was wondering about it. I thought it was the converter locking up. I have only owned C6's with no OD for the last 20 yrs.

Jan 7, 2004 | 09:41 PM

#17

ssls6

More Turbo

Joined: Dec 2003

Posts: 534

Likes: 168

From: Park County, CO

1-2
2-3
3-3L
3L-4
4-4L

5 times?

Jan 7, 2004 | 11:46 PM

#18

phonebem

Senior User

Joined: Oct 2003

Posts: 178

Likes: 0

I've noticed what seems to be an extra shift as well, it definately doesn't feel like slippage. I thought it was pretty odd too. Anyone know what the heck is up?

Jan 7, 2004 | 11:54 PM

#19

Munkey

Fleet Mechanic

Joined: Nov 2001

Posts: 1,553

Likes: 0

From: Corpus Christi, TX

It's just the torque convertor locking up, perfectly normal on our trucks.

Jan 8, 2004 | 03:46 PM

#20

skeet

Trailering

Joined: Jan 2004

Posts: 24

Likes: 2

torque converter will lock at around 43mph.

Jan 11, 2004 | 06:25 AM

#21

wgm114

Mountain Pass

Joined: Aug 2000

Posts: 144

Likes: 0

From: Centreville, Virginia

Check out the Tech Articles. there is an awesome one on how to fully change your tranny fluid yourself without too much hassle. Just did it. the instructions are perfect!

Jan 11, 2004 | 07:46 AM

#22

Casey

Posting Guru

Joined: Jul 2003

Posts: 2,210

Likes: 2

I've used it, too. It works great! Here is a link to it:

https://www.ford-trucks.com/articles...hangingatf.php

Jan 11, 2004 | 07:51 AM

#23

HeavyAssault

Cargo Master

Joined: May 2002

Posts: 3,271

Likes: 229

From: Gulf Coast, FL

Here is an article written by a Ford Tech. He rebuilds tranny valve bodies for better shifting. His work is well known throughout the HD and Lighting crowd. Plenty of good responses about his work.

http://www.chikenearsengineering.com/accumulator.htm