4R70W
Thread Starter
|
Tuned
Joined: Jan 2019
Posts: 364
Likes: 91
Yeah...It's really hard to tell on mine but the last "shift" has the biggest rpm drop so assume that is OD so I would say mine locks in 3.No big deal but just curious.
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
Under normal driving my truck always does 1, 2, 3, lock, 4. I'm guessing it stays locked when shifting into 4th because there is not other change. I know it is locked up since slightly touching the brake unlocks it. Every 4R70W truck I have driven is like this. I think even the E40D acts the same way.
Logistics Pro
Joined: Aug 2014
Posts: 3,553
Likes: 848
Under normal driving my truck always does 1, 2, 3, lock, 4. I'm guessing it stays locked when shifting into 4th because there is not other change. I know it is locked up since slightly touching the brake unlocks it. Every 4R70W truck I have driven is like this. I think even the E40D acts the same way.
When in second, going up slight hill, I slowly push pedal to floor, as RPMs rise, and finally get to wide open throttle, I feel the TC lock.
Driving sanely, 1/4 throttle max, very rarely feel the TC lock.
Thread
Thread Starter
Forum
Replies
Last Post
burton7.3
1987 - 1996 F150 & Larger F-Series Trucks
5
Apr 12, 2013 06:49 PM
SDF250fan
1999 - 2016 Super Duty
8
Jul 26, 2010 07:07 PM
hytekredneck
1999 - 2003 7.3L Power Stroke Diesel
1
May 26, 2008 09:14 PM
