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Old 03-30-2023, 07:05 AM   #5
special-K
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Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,863
Re: Speedometer Acting Strange

If pulling the speedometer cable from the housing, cleaning, and lubing doesn't fix it, which is always a good thing to do on a 50+ year old truck, then it's a poorly made aftermarket speedometer. I have never seen such an issue with an OEM speedometer. Usually, the way a speedometer tells you the cable needs cleaned and lubed is by the needle movement being jumpy. If it's really bad it will be very unresponsive and inaccurate
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