My speedo is great up to 40 mph, then bounces al around when I drive any faster. Some people advised me to get it rebuilt, magnets were bad.
So this past weekend I rented a ditch witch, and pulled it on a trailer, and I noticed my speedo was rock. Solid, steady and accurate. When I returned the rented equipment, while driving home my speedo was bouncing again.
Any ideas why a load would make it act normal, then no load it bounces? Thanks for any help
