Speedometer ISSUES

[Chris.v]

So, I have a 2008 f-350 XLT. Driving along and the speedo bounces around and wraps the needle. It will also sometimes do it in park. Whenever I honk the horn, the speedo will wrap too. It's very odd, I'm thinking maybe a bad or loose ground. I've checked the ones in the cab just Inside the kick panels, there tight and look to be in great shape. Does anyone have any ideas to point me in the right direction?

Thanks!!

 

[sootie]

thats ***ked LOL

 

[Chris.v]

Truck only has 31,700miles on it (61,000k) video of the truck driving.

 

[SlowSmoke]

One ground that can give grief is the one under the passenger side front door, it grounds the cab to the frame. Maybe try that, but I really don't know. It's right by the cab mount there.

 

[Chris.v]

One ground that can give grief is the one under the passenger side front door, it grounds the cab to the frame. Maybe try that, but I really don't know. It's right by the cab mount there.

Thanks for the suggestion, I'll check it out. The previous owner did have the bedplate done, so the cab has been off.