speedometer guestion

[moparfanatic56]

ok on my 72 dart I put in a new speedometer cable along with the a new speedometer gear. I hooked up the cable to the speedometer and trans and they slid right in so I went to check it to see if it was working and as soon as I went forward it pegged the needle at 120 and didn't return to 0, any ideas on possible things that caused this.

 

[TrailBeast]

ok on my 72 dart I put in a new speedometer cable along with the a new speedometer gear. I hooked up the cable to the speedometer and trans and they slid right in so I went to check it to see if it was working and as soon as I went forward it pegged the needle at 120 and didn't return to 0, any ideas on possible things that caused this.

What caused is a dirty dried out speedometer head.
Welcome to the rabbit hole.

 

[moparfanatic56]

What caused is a dirty dried out speedometer head.
Welcome to the rabbit hole.

oh how well I am finding this out that hole keeps getting deeper and deeper, so a new or different speedometer is in order I guess.

 

[Murray]

Remove the head, it needs servicing.

 

[TrailBeast]

oh how well I am finding this out that hole keeps getting deeper and deeper, so a new or different speedometer is in order I guess.

On the third try I ended up with one that worked like it was supposed to.

 

[burks440]

try mopar restos in sumerville Ga i purchased 1 from him for $125.00 works like a finely wound clock.

 

[cudamark]

Probably worn input shaft bushing and the needle may be rubbing on the faceplate.