Kevlar7R
Well-Known Member
- Joined
- August 18, 2007
- Messages
- 279
- Reaction score
- 2
- City, State
- Phoenix, AZ
- Year, Model & Trim Level
- 1997 Mountaineer 5.0 4x4
Calling all BW 4406 experts. I need your help!
Quick summary.... Is it possible for the output shaft bearing of the BW4406 to wear in such a way that it could be moving and disengaging the Speedo drive gear from the VSS?
Okay long story. I started another thread earlier on the intermittent VSS code, but, I've determined that there is no way it can be an electrical issue.
http://www.explorerforum.com/forums/showthread.php?t=374518
I've replaced all the sensors, traced out all the wiring, everything is fine. Final proof of that test was spining the speed sensor with a drill, with the engine on and running, to prove that the speed trace is solid.
I've attached a picture of what the trace looks like while driving. When spinning it with the drill, it is a flat line.
The only theory left is that the drive gear is not spinning the VSS consistently... which I just have a really hard time believing.
So, when I grab the drive shaft, I can move it up and down in the tcase by a tiny amount.
Is this possible? Could the output shaft be moving up and down and the speedo drive gear be engaging and disengaging the vss?
Next... is it possible to just remove the output shaft housing, replace the bearing and speedo gear, without removing the whole tcase?
Quick summary.... Is it possible for the output shaft bearing of the BW4406 to wear in such a way that it could be moving and disengaging the Speedo drive gear from the VSS?
Okay long story. I started another thread earlier on the intermittent VSS code, but, I've determined that there is no way it can be an electrical issue.
http://www.explorerforum.com/forums/showthread.php?t=374518
I've replaced all the sensors, traced out all the wiring, everything is fine. Final proof of that test was spining the speed sensor with a drill, with the engine on and running, to prove that the speed trace is solid.
I've attached a picture of what the trace looks like while driving. When spinning it with the drill, it is a flat line.
The only theory left is that the drive gear is not spinning the VSS consistently... which I just have a really hard time believing.
So, when I grab the drive shaft, I can move it up and down in the tcase by a tiny amount.
Is this possible? Could the output shaft be moving up and down and the speedo drive gear be engaging and disengaging the vss?
Next... is it possible to just remove the output shaft housing, replace the bearing and speedo gear, without removing the whole tcase?