Bouncy speedo
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Bouncy speedo
My speedo is bouncing. Iwas told by one guy that the gear on the tranny was worn. Another guy said that the sensor on the rear axle is a speed sensor and should be replaced. I thought it was only an ABS sensor. The truck is a 95 powerstroke with E4OD
Post Fiend
Joined: Jul 2005
Posts: 8,462
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From: Durant, OK (SOSU)
On our Rangers the VSS in the rear diff doesn't control the speedo, I'd assume it was the same on yours.
Every old vehicle I see seems to have a bouncy speedo, never heard of a worn gear causing it. Just thought it was something that came with older vehicles.
RP
Zach
Every old vehicle I see seems to have a bouncy speedo, never heard of a worn gear causing it. Just thought it was something that came with older vehicles.
RP
Zach
Postmaster
Joined: Mar 2001
Posts: 4,968
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From: So Cal
Your year should have the VSS on the differential. If it is damaged it will make the speedo jump and can kick the cruise control off and cause the ABS light to come on.
My truck had this problem and at first the speedo was fine but gradually the needle would jump a little and eventually it would go to 0 and then jump to the road speed and of course cut of the cruise.
It is simple to replace and costs something like $15 or so. If the dealer does it they charge about $60 labor.
Good Luck,
Jim Henderson
My truck had this problem and at first the speedo was fine but gradually the needle would jump a little and eventually it would go to 0 and then jump to the road speed and of course cut of the cruise.
It is simple to replace and costs something like $15 or so. If the dealer does it they charge about $60 labor.
Good Luck,
Jim Henderson
Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
The sensor itself rarely causes any problems. It's so simple it's almost impossible for it to fail. If you aren't having any other problems with other systems that use this sensor, e.g. the tranny, cruise control, and ABS, then 99% of the time it's the speedo head in the dash.
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