Speedometer jumping needle from 0 to 10 mph

[jalexquijano]

My 240z has a jumpy needle from 0 to 10mph. I have already greased the cable, changed with a new cable, changed the pinion gear and the problem persists. Any slight possibility that the speedometer clock could be damaged?

[rcb280z]

I had the same thing with my 280. While I was under it one day I noticed a bend in the speedo cable. Replaced it and it went away.

[jalexquijano]

Where do i get a Nissan OEM Speedo cable?? I bought one from black dragon but its not good quality. the needle still jumped when i installed it!! I want nissan oem quality as the original.

[Jarvo2]

I have an extra original speedo cable available, although shipping to panama would be quite a bit I would think.

[jalexquijano]

is it Brand new??? Nissan?? Any pictures? I will need it shipped to Miami, FL!! Please quote!

[Zed Head]

On 3/1/2017 at 9:23 AM, jalexquijano said:

 Any slight possibility that the speedometer clock could be damaged?

Could be, or it could just be dirty.  There's a round thing that spins inside a round thing, or close to it, with a narrow gap between them.  Stuff can get in the gap.  If you're handy you could remove it and use a drill motor to spin it to see if it still sticks.  That takes the cable out of the picture.  I think that I've read of people just blowing out the dust accumulation and bring them back to life.

https://www.google.com/search?q=how+a+speedometer+works&site=webhp&tbm=vid&source=lnms&sa=X&ved=0ahUKEwiNj8vd8sfSAhUDx2MKHfwqD84Q_AUICCgB&biw=1280&bih=890&dpr=1

[rcb280z]

2 hours ago, Zed Head said:

I think that I've read of people just blowing out the dust

That's what I couldn't remember about this. I tried it and ended up replacing my cable. 

From Zcardepot.com  New speedometer cable for Datsun 240Z, 260Z and 280Z, 1970-1978.  Replaces the stock speedo cable. Part #: 800-045   If your speedometer is not working or is jumping around this cable might be the fix.  

So I would check out your speedo before ordering the cable. It also doesn't say its a Nissan part but.... 

 

[jalexquijano]

On ‎03‎/‎07‎/‎2017 at 0:53 PM, Jarvo2 said:

I have an extra original speedo cable available, although shipping to panama would be quite a bit I would think.

DO you still have it available? Is it original OEM nissan for a 240z? Pictures?

[Jarvo2]

Yes I do still have my 280z speedo cable. PM me if interested & we can talk price/shipping


Sent from my iPhone using Classic Zcar Club mobile

[jalexquijano]

quite expensive!!