Shakey speedometer

[Maverick0007]

Here is my experience. My speedometer needle is real shakey from 0 - 30 after it hits 30 the needle is as steady as can be. Anybody have any ideas on what is causing this?

 

[Vanquish502]

Happened to me too after I took my transmission out. I'm guessing the little gear thing isnt seated properly or something.

 

[Bwana Bob]

Check the speedometer drive cable for kinks or binding, then try lubricating it.


Bob

 

[410Fortune]

could be lots of things, usually the higher tooth gears do this (19-21, used for larger tires)

Your cable could be worn out, or you might need a new speedometer head. My BII speedo has done this for years and years, I think its because its the original unit with 247K miles on it. the cable, sensor, gears are all new

 

[Maverick0007]

Do you think changing out the speed sensor would fix this?

 

[410Fortune]

no
the speed sensor just monitors the speed of the gear/cable.
If your cruise control works then the speed sensor is working

The cable or the gear are the first suspect

 

[Maverick0007]

Ok, well I think I will look into the cable, and hope it is not the gear. Do you know if inspecting that gear is difficult?

 

[monkeypothrower]

yea mine started after i had my transmission done. The dude said he had no idea, so i havent worried. But hopefully i can fix it now. -TJ

 

[410Fortune]

the gear on the end of the speed sensor/calbe is plastic, about $15 from Ford. A single botl holds the whole assembly in the transfer case/transmission.