Speedometer noise

[HANG TEN]

Does anyone have any experience with a speedometer that becomes noisier as you pick up speed? It seems worse on colder mornings, gets worse as the speed increases, and the speedo becomes both noisy and very inaccurate, reading much higher than the actual speed driven.

I have a A833 overdrive and some have mentioned that the tranny can cause this problem. I thought that was nuts, but after changing the cable and putting in another (used) speedometer, I'm curious.
Does anyone have some knowledge of what causes this?

 

[moparleo]

First thing. Is this something that you just purchased ? Or have you had the car a while and out of the blue it started to make noise ?

 

[mmissile]

Mine was the cable being bad. It wound up like a rubberband...released, and broke the speedo in my Ramcharger.

 

[Racer57]

I had two that done that. First was the one that was in it, the second was a "new" OER. When it starts to do it, pull over and reach underneath and disconnect it. See if you still hear the noise.

 

[moparleo]

When you say that you replaced the cable, was it a "new" cable, or just another cable. And did you replace the cable housing too ?

 

[DetMatt1]

I guess I'd pull the cable for an inspection or at least disco at both ends and give it a spin.