VSS Problem?
Cargo Master
Joined: Jul 2006
Posts: 2,756
Likes: 38
From: Nampa, ID
I'm interested in what the book says, too. Does the VSS signal go to the PSOM first, then the PCM or the PCM first and then the PSOM?
I'm curious about this question, too. What does the third brake light have to do with the VSS issue?
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
If the speedo continuously acts up, I would take a look at the tone ring on the ring gear in the rear axle. Put the rear axle on jack stands, put the truck in neutral. Pull the VSS and rotate the driveshaft. Inspect the tone ring while you rotate it. If it's got teeth missing, it will cause the speedo jumping, tranny problems etc. And the down side is if the tone ring is chewed up, there is only one thing that will do that.......broken gears.
Cargo Master
Joined: Jul 2006
Posts: 2,756
Likes: 38
From: Nampa, ID
RD, I hope that's not the case for me. I'll be taking a look this weekend.
Thanks for the info Steve. I'm gonna go check my third brake light right now.
The bulb is not functioning. If this fixes my problem, I'll be amazed. Gotta get ready for work, so I'll see if I have a replacement bulb to install.
Thanks for the info Steve. I'm gonna go check my third brake light right now.
The bulb is not functioning. If this fixes my problem, I'll be amazed. Gotta get ready for work, so I'll see if I have a replacement bulb to install.
Last edited by IDMooseMan; Aug 9, 2011 at 05:13 PM. Reason: Third brake light checked
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
RD, I hope that's not the case for me. I'll be taking a look this weekend.
Thanks for the info Steve. I'm gonna go check my third brake light right now.
The bulb is not functioning. If this fixes my problem, I'll be amazed. Gotta get ready for work, so I'll see if I have a replacement bulb to install.
Thanks for the info Steve. I'm gonna go check my third brake light right now.
The bulb is not functioning. If this fixes my problem, I'll be amazed. Gotta get ready for work, so I'll see if I have a replacement bulb to install.
Craig you asked if the PSOM was integrated in the instrument cluster , yes it is ,but its an independent part that can be replaceable. I think there are some companies that can test and fix it but I dont remember which ones, sorry,
Ill try to find the info. for you.
Thread Starter
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Tuned
Joined: May 2003
Posts: 454
Likes: 1
From: College Station TX
It is definitely shifting better, but the truck is really sluggish. That may have something to do with the sticking brake caliper. I just rolled 210,000 miles, so it seems like I'm finding new things all the time. Don't you wonder what the engineer was thinking that put this part of the wiring system together?
VT Chapter Ldr
Joined: Apr 2004
Posts: 96,075
Likes: 294
From: Orange, Vermont
Did you fix the third brake light and you problem went?
Let me know please.
Craig you asked if the PSOM was integrated in the instrument cluster , yes it is ,but its an independent part that can be replaceable. I think there are some companies that can test and fix it but I dont remember which ones, sorry, Ill try to find the info. for you.
Let me know please.
Craig you asked if the PSOM was integrated in the instrument cluster , yes it is ,but its an independent part that can be replaceable. I think there are some companies that can test and fix it but I dont remember which ones, sorry,
Ill try to find the info. for you.FTE Stories
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Cargo Master
Joined: Jul 2006
Posts: 2,756
Likes: 38
From: Nampa, ID
I bought a used cluster awhile back, but haven't installed it or had it tested because IDK where to take it for testing.
Does anyone have a photo of the PSOM? Maybe a photo of its location in the cluster?
If I can swap it into my current cluster, that would be good, but the PSOM stores the odometer reading doesn't it? If I'm right about that, I might as well install the other cluster, if it tests good (if I can find a place to test it).
Does anyone have a photo of the PSOM? Maybe a photo of its location in the cluster?
If I can swap it into my current cluster, that would be good, but the PSOM stores the odometer reading doesn't it? If I'm right about that, I might as well install the other cluster, if it tests good (if I can find a place to test it).
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
I bought a used cluster awhile back, but haven't installed it or had it tested because IDK where to take it for testing.
Does anyone have a photo of the PSOM? Maybe a photo of its location in the cluster?
If I can swap it into my current cluster, that would be good, but the PSOM stores the odometer reading doesn't it? If I'm right about that, I might as well install the other cluster, if it tests good (if I can find a place to test it).
Does anyone have a photo of the PSOM? Maybe a photo of its location in the cluster?
If I can swap it into my current cluster, that would be good, but the PSOM stores the odometer reading doesn't it? If I'm right about that, I might as well install the other cluster, if it tests good (if I can find a place to test it).
Speedometer & Gauge Repair - Home
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
I bought a used cluster awhile back, but haven't installed it or had it tested because IDK where to take it for testing.
Does anyone have a photo of the PSOM? Maybe a photo of its location in the cluster?
If I can swap it into my current cluster, that would be good, but the PSOM stores the odometer reading doesn't it? If I'm right about that, I might as well install the other cluster, if it tests good (if I can find a place to test it).
Does anyone have a photo of the PSOM? Maybe a photo of its location in the cluster?
If I can swap it into my current cluster, that would be good, but the PSOM stores the odometer reading doesn't it? If I'm right about that, I might as well install the other cluster, if it tests good (if I can find a place to test it).
