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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Slow Speedometer

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Old Apr 25, 2011 | 01:48 PM
  #1  
shortwide's Avatar
shortwide
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Joined: Dec 2010
Posts: 562
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From: Texas
Slow Speedometer

My speedometer doesn't start moving until I'm going around 10mph, then it stays about 10mph slow after that.

I'm thinking it's a lubrication issue.

What do yall think?.....and.....what lubricant is best to use?
 
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Old Apr 25, 2011 | 10:38 PM
  #2  
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OldHarley
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From: Dallas, Texas
Sounds like a speedo problem, not a cable problem.

The 10mph 'slippage' you are trying to track down happens in the speedo, not in the cable.

Yes, you can change the reading on the speedo with a different gear in the tranny, but that doesn't sound like that fits the symptoms you have described.
 
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Old Apr 26, 2011 | 12:13 AM
  #3  
Ziegelsteinfaust's Avatar
Ziegelsteinfaust
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Joined: Dec 2010
Posts: 1,240
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From: Chino Hills
I had a similar issue, and in my case it was the speedo.

It was something to do with the internal springs. I traded my in or core, and thats what I was told.
 
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