Without removing anything with oil inside, you can remove the speedo cable by pulling it out from behiond the speedo. Remove the gauge cluster, dismount the speedo cable clip from the speedo and the cable will present itself to you. If the cable has two square drive ends on it still, your cable is fine. Use a light application of white lithium grease on the cable and reiensert it in the housing. If the cable is not complete, it's easy to replace at this time, too. If the cable is good, and the speedometer is actual culprit, again... If the speedo drive gear is bad, it's not likely the PO would have commented on the speedo being jumpy.

If you need a speedo or cable, I (and others) have them for sale from parts cars.

Do you have a stick or automatic? Not sure if there's a difference in the cable, none in the gauge. <img src="/forums/images/graemlins/smile.gif" alt="" />