digital speedo failure

[csasso]

Hi All,

I have a 96 Marquis with a digital speedo that sometimes stops working for a few minutes (it just goes to 0), usually after start up but occasionally while driving. It comes back on but is happening more often now. I am assuming it is a sensor somewhere. Any suggestions on what check and how to fix this problem?

Thank you,
Chris

[marquisman]

i dont have a whole lot of knowlage in this area, but it sounds to me that the VSS(vehicle speed sensor) is crapping out. its located by the tailshaft of the trany, easy install.

[seneeb]

could be the vss, could be wiring, could be internal in the cluster (like a semi broked solder joint)