The speedometer in my 1995 ford f-150 is not working properly. It will work fine until it reaches 35-40 mph, but then starts jumping around. The odometer seems to be working correctly. I have replaced the diff. Sensor, trans. Sensor and speedometer head with no luck. The truck has been sitting idle for about a year. Any help would be appreciated.
Sunday, August 3rd, 2014 AT 2:17 PM