what causes speedometer to jump
Dirty gunky grease on your cable is the cause. At lower speeds the cable binds slightly and then jumps when the binding is overcome. This causes the spedo needle to jump. I believe that the cable comes out from the spedo end. Pull out, clean off the old grease, use new graphite type spedo cable grease on the cable and reinsert. You may have to take the end loose at the transmission to reinsert the cable into the drive. Good luck,
As a Boeing 757 airliner climbed to 14,000 feet in March, a routine takeoff suddenly became an emergency. Sparks and smoke came out of the passenger cabin's in-flight entertainment system, cockpit instrument lights lit up, and the rudder and control wheel moved.en Adams, who was the Air Line Pilots Association's lead investigator in the Swissair crash, doesn't think the systems must be scrapped. But he says they need to be better designed and suggests studying the use of fiber-optics instead of electrical wiring.