My Scangauge has shown a consistent problem from day one. It reads fine when I start the van and after a few minutes it goes 'off-line'. While off, it randomly cycles between either blank or showing gauge titles without data or showing old data from the moment it went dead. Then after 30 to 45 minutes of driving, it comes on and works fine. If I shut down for 10-15 minutes and restart while still warm, it works ok. The gauge itself is fine, works perfectly in my Tacoma pickup.
I suspect that I have a loose connection where the data cable leaves the engine computer. As the system heats up, something expands and completes the connection.
Do you think I'm on the right track here and if so, can anyone tell me where to look under the hood for the other end of the ODB2 cable?
2002 E350 7.3 PSD
Quigley 4x4, EB50 floorplan