Speedometer? - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 03-06-2012, 07:21 PM Thread Starter
Powerstroke.org Rookie
 
wjjb's Avatar
 
Join Date: Jan 2012
Location: graham, wa
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Speedometer?

My speedometer on my 97 cc lb 5spd will work if i go over 27mph if i go under that it will start bouncing and going crazy. could it be by chance that sensor in the rear end?

97 F350 cc, lb, 5spd.
17* hpop
Stancor gpr
1.00 turbine housing
Superchip programmer
Diamond eye turbo back dual 4" exhaust
Glow shift digital gauges
K&N intake
12,000lb Ramsey winch
Air lift air bags
4" lift kit
37x12.50x16 tsl swampers
wjjb is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 03-06-2012, 08:20 PM
Compression Ignition Addict
 
Join Date: Dec 2011
Location: Northern Arizona
Posts: 2,164
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Thanks: 0
Thanked 12 Times in 12 Posts
Feedback Score: 4 reviews
It could be but that is a odd problem. Usually if the speedometer was going to act funky it would do it at all speeds. Sure wouldn't hurt to pull the vss and see if it needs cleaned.

Jack
97 F250 Xlt, built E4od, D60 swap, Baby swamps, tunes by Dp
1.0 turbo housing, 203* t-stat, diy 6637, 4" exhaust
Diy intercooled, 6.0 fan, Diy 140v Idm, Isspro Ev gauges
On board air,E-fuel, 5" lift on 35's
320000 miles
1Dieselman is offline  
post #3 of 6 Old 03-06-2012, 08:22 PM Thread Starter
Powerstroke.org Rookie
 
wjjb's Avatar
 
Join Date: Jan 2012
Location: graham, wa
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
k i will take it out tonight and give it a good cleaning, thanks for the help.

97 F350 cc, lb, 5spd.
17* hpop
Stancor gpr
1.00 turbine housing
Superchip programmer
Diamond eye turbo back dual 4" exhaust
Glow shift digital gauges
K&N intake
12,000lb Ramsey winch
Air lift air bags
4" lift kit
37x12.50x16 tsl swampers
wjjb is offline  
post #4 of 6 Old 03-07-2012, 08:04 AM
Compression Ignition Addict
 
superduty4x4's Avatar
 
Join Date: Nov 2007
Posts: 2,355
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Could be the sensor, but not likely. It could be the tone ring in the rear end... if you haven't changed the fluid in a while, I'd start there. Or, it could be the PSOM, which is a computer module built into the speedometer head. If it's the PSOM, you have to replace it. While that's not a big deal... the PSOM stores the truck's mileage, so whatever mileage the donor rig had will now show on your truck. I do believe there is a place that rebuilds them, but when the PSOM crapped out on me in my old 95 gasser it was cheaper to buy a new cluster. And... I got lucky and found one that was within a few hundred miles of actual for the truck.
Another thing to note... if you end up buying a used cluster for the PSOM, if it's not from the same year truck you'll have to disassemble the cluster and swap the good speedometer/PSOM into your cluster. There are minor differences in wiring (IIRC for a PSD 94-95 are the same and 96-97 are the same) and if you drop in a cluster from a different year truck, you'll end up with random lights on all the time and some that don't work.

97 F350 CCLB 4x4 PSD
superduty4x4 is offline  
post #5 of 6 Old 03-10-2012, 06:14 AM Thread Starter
Powerstroke.org Rookie
 
wjjb's Avatar
 
Join Date: Jan 2012
Location: graham, wa
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
alright, i tried cleaning it good but that did not help, im gonna try and change the gear lube today, if not i will try a sensor since they are only $25. if thats not it then its gotta be wiring or the cluster. thanks for all the replys.

97 F350 cc, lb, 5spd.
17* hpop
Stancor gpr
1.00 turbine housing
Superchip programmer
Diamond eye turbo back dual 4" exhaust
Glow shift digital gauges
K&N intake
12,000lb Ramsey winch
Air lift air bags
4" lift kit
37x12.50x16 tsl swampers
wjjb is offline  
post #6 of 6 Old 03-12-2012, 08:19 AM
Compression Ignition Addict
 
superduty4x4's Avatar
 
Join Date: Nov 2007
Posts: 2,355
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I'd get the sensor from the dealer, it'll save you some headaches.

97 F350 CCLB 4x4 PSD
superduty4x4 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome