Speedo stuck at 65 MPH without cable connected???? Does move past when the cable is spun

[Todd Jackson]

Hi gang - Just put the dash in and noticed the Speedo won't zero out - stuck at 65 MPH. When I spin the cable one way it will move past towards 70, etc....but when I spin the cable the other way it sounds like it's hitting a "stop." Any suggestions on root cause? Dreading taking the dash back out....thanks! TJ

 

[Xcudame]

Uh oh! Sounds like you need a new Speedometer gauge! Regardless the issue, you're taking the dash back out! Sorry for the bad news. Take out and see what happens with the needle.

 

[Challenger RTA]

Dakota dash? And new wiring harness?

 

[Xcudame]

Challenger RTA, good question. I assumed factory stock. But the new Dakota stuff may be definitely different!

 

[Ronbo73]

The Dakota digital instrument clusters don't use a cable, they use an electronic signal to drive the speedo. I agree with Xcudame, you will need to pull the instrument cluster out and troubleshoot the speedo.

 

[Todd Jackson]

Dakota dash? And new wiring harness?

Stock speedo....no electronics....listen out your window....you will hear me swearing as I remove the dash...

 

[Todd Jackson]

Uh oh! Sounds like you need a new Speedometer gauge! Regardless the issue, you're taking the dash back out! Sorry for the bad news. Take out and see what happens with the needle.

Stock speedo....no electronics....listen out your window....you will hear me swearing as I remove the dash...

Uh oh! Sounds like you need a new Speedometer gauge! Regardless the issue, you're taking the dash back out! Sorry for the bad news. Take out and see what happens with the needle.

If I remove the bolts that hold the cable end of the Speedo - wil that allow the back to come off?

 

[Todd Jackson]

Stock speedo....no electronics....listen out your window....you will hear me swearing as I remove the dash...

If I remove the bolts that hold the cable end of the Speedo - wil that allow the back to come off?

 

[Todd Jackson]

Dakota dash? And new wiring harness?

If I remove the bolts that hold the cable end of the Speedo - wil that allow the back to come off?

 

[Challenger RTA]

By removing the front cover and the two bolts on the back. The speddo comes right out.

 

[Todd Jackson]

By removing the front cover and the two bolts on the back. The speddo comes right out. View attachment 137766View attachment 137767

OK is that also the case for the non Rally set up? I have to remove the clear plastic cover and the 2 bolts around the Speedo cable input?

 

[cudamark]

Sounds like the needle spring anchor came loose or shifted.

 

[Todd Jackson]

You nailed it...it shifted then I effed it up. So I bought a new Speedo. And I was able to replace it all by dropping the column and pulling the front of the dash off....