Speedometer cable issue?

[sammisox]

Possibly a dumb question, but my speedometer cable was recently replaced by a shop and now the needle randomly jumps all over the place and it makes this noise after I get up over ~ 25mph  

 

What would cause this? 
 

Hopefully the video clip works

[eaglescout526]

That’s not right at all. Have you checked the cable yet?

[sammisox]

Sorry got caught up working and then researching external trans coolers and fuel injectors. Gonna dig into it tomorrow, just didn’t know if someone had this issue before 

[eaglescout526]

I have never seen it but it really isnt right. I would check to see how it is routed and installed. it acts like it has a kink.

[gvthnks]

yeah, that's nuts.  I'd wonder too if it's attached correctly at the back of the speedometer.  A cable that is binding internally causes jumping of the needle.   The needle slows down (drops below actual speed) as the cable begins dragging and then jumps higher as the cable unloads in the housing and then the process repeats itself.

 

That yours pegs out and stays there makes me wonder if it's not attached correctly or the inner cable is slightly too long and jamming up the works.

 

 

[Car Enthusiast]

They might have put the longer cable on. I did that on mine and it had some sharp bends. That make the cable bind then release causing it to jump on the tach

[sammisox]

Yes I’m guessing that’s the problem because everything is seemingly connected fine, but the cable is long as heck