[tomglenn]

My speedometer doesnt in my 91. Any thoughts

 

[obxstyle]

check your cable

 

[I'm Slow]

check the VSS mabye its gone bad

 

[Twiz]

I'd start by removing the cluster... It's not hard and it doesn't disable your car... car still drives fine without it... except you don't have a visual on your sensors, speed and odometer... check cable connection on the back of it.