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1995 Ford F-150 bouncing speedometer

Tiny
LADDJAG1
  • MEMBER
  • 1995 FORD F-150
1995 Ford F150 V8 Two Wheel Drive Automatic 121k miles

Hi, My speedometer needle starts bouncing at 32mph. Smooth as glass up to there. Worked fine till sensor on transaxle quit. Replaced rearend sensor and just bounces now above 32mph. Was told there is a plastic gear that is worn in the tranny? Any truth to that or is it the cluster? Thanks in advance, Joe
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Monday, February 22nd, 2010 AT 6:43 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,244 POSTS
Did you replace the VSS (vehicle speed sensor)?
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Monday, February 22nd, 2010 AT 7:58 PM
Tiny
LADDJAG1
  • MEMBER
  • 1 POST
Hi, The mechanic replaced the sensor on the top of the rear end diferential. That got the speedo working up till it hits 32 then bounces. I found last night a wired plug about 11 o'clock from the prndl swicth thats held in by a 8mm bolt and removed it. There was no gear on it, just a black plastic plug with what looks like a metal (magnetic) sensor on it. I put it back in. I pulled the cluster to make sure it was connected good and it was. Thats all that been done. Thanks in advance, Joe
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Tuesday, February 23rd, 2010 AT 7:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,244 POSTS
Was the mag clean?
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Tuesday, February 23rd, 2010 AT 7:34 AM

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