Speedo jumps - Ford Mustang Forums : Corral.net Mustang Forum
LinkBack Thread Tools Display Modes
post #1 of 2 Old 05-12-2012, 12:33 PM Thread Starter
Registered User
Trader Feedback: (0)
Join Date: May 2012
Location: Sioux Falls
Posts: 7
Speedo jumps

Just put a used cluster in my 91 convertible and the speedometer won't stay still? Just a tad jumpy any tips?

kenworthkid28 is offline  
Sponsored Links
post #2 of 2 Old 05-21-2012, 10:54 PM
Registered User
wmburns's Avatar
Trader Feedback: (0)
Join Date: Apr 2012
Location: Houston
Posts: 272
I need some help to answer this. My Ford workshop manuals go back to 92 and I have nothing older. The wiring diagrams indicate the 92 uses a VSS speed sensor.

Does the 91 use a VSS sensor or a mechanical speedometer cable?
If the 91 uses a VSS sensor, then likely there is something wrong in the cluster electronics.

If mechanical, look for kinks and binding inside the cable. Common cause of a speedometer bouncing. Consider trying to lube the cable. Otherwise it's time for a new cable.

Here's some more links.


Last edited by wmburns; 05-21-2012 at 11:16 PM.
wmburns is offline  
Sponsored Links


Quick Reply

Register Now

In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang 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:
Please enter a password for your user account. Note that passwords are case-sensitive.


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

Email Address:


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Speedo jumping/bouncing/sticking erratically 94GTPilot 94/95 Tech 5 02-04-2012 12:54 PM
Speedo Gear Ratio, So Confused!! nomadtrash 94/95 Tech 5 05-16-2011 12:30 PM
Speedo problem 94gt orange50 94/95 Tech 0 03-21-2011 11:48 PM
Want To Trade nice 90 -93 140mph speedo, for 87 -89 140mph speedo ndmus88gteng Electronics and Entertainment 7 02-21-2011 11:12 PM
Help AOD Speedometer Recalibration SAS General Mustang Tech 13 12-28-2001 07:23 AM

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