Got a real b!tch of a problem with one of the Bronco's we recently sold.It is a 94,5.0,e4od.electronic shift t-case.When the truck is cold everything is fine,but when it warms up is when the problems start.The speed sensor signal for the computer is dropping out after being driven for a while.The speedometer never stops working correctly,and the abs never acts up.I replaced the speed sensor on the back of the transfer case and it seemed to fix the problem,but it came back 2 days later acting up again.I brought it into the shop and put the rear on stands and put it in gear and watched the vehicle speed on my scanner.Sure enough,the speed on the scanner went to 0 mph,but the speedometer was reading about 40-45 mph.Out of aggravation I whacked the center of the floor in front of the console and the vehicle speed started to read again.I waited for it to act up again and whacked the floor again,started reading again.Ripped both the front seats out and traced the harness from the sensor to the transfer case shift module.Didn't find the harness to be damaged.Let it act up again and tried moving the harness around,no change,whacked the floor again and it started working again.I pulled the t-case module out and tried tapping it,twisting it and pulling on the wires and nothing changed.Thinking I might have a bad wire in the harness I cut and spliced in 2 new wires from the speed sensor to the t-case module,didn't fix the problem.Anybody have any other ideas.I am not sure which wires communicate the speed sensor info from the t-case module to the main computer.Need help with this asap or we are going to have to give the guy his money back