I am working on a 1992 F150 5.0l 2wd auto. I am getting a code 452 vss code and I have already replaced the diff speed sensor and I am looking for a flow chart to track down this problem. So any good help would be nice. Thank You .

 

Is their anyone that can help me here ????? When driving at low speeds about 20 mph the trans kicks out of gear. I have read their is a circuit board on the back of the dash that sends a signal to a module then to the trans. It would be nice for a little help.

 

I have a snapon old scanner, a snapon new solus scanner and a snapon vantage that I have to check this problen out. this is not a OBDII system. I have read here that the circuit board on the back dash gos bad and sends the wrong signal to the trans so what do I need to check here as I can not find any flow chart for this problem. Thank You in advance. John

 

The wiring to the plug for the VSS is a common problem.