My truck, a 1987 F250 N/A Diesel, lost the cruise control about a week ago. Everything else works but the cruise. I checked the fuses and they all were good. I remember a post about losing the cruise but can't seem to find it. The cruise has always worked and it is a pain to try and keep the same speed cruising down the highway not to mention having to watchout for the radar. Any ideas where to start?

 

There are a few common things you can check real quick to see what it may be. first check the connection on the cruise module itself. make sure you don't find any "green death" aka corrosion, since it sits right above the wheel well this is a great place for this to happen. also make sure the grounds are all getting good contact. if all of your connections are solid chances are you have a bad VSS or vehicle speed sensor. you can usually take a scan tool to check to see if it is functioning properly, or test to see if you can complete the circuit with an ohlm meter. the part is pretty cheep, should be under $20 from your local parts house.

Hope this helps....