00 expidition - RS + outside temp sensor?

So we installed a Compustar 1WAMS  in this rig, it works fine but the customer is now complaing that his outside temp sensor does not work. It does not go below 30C. (I wish it was that warm right now). According to himn it worked fine before. Now the sensor is in dead center of the front grill, no idea where the line runs in the vehicle between the sensor and display.  There is no chance at all that it has anything to do with any of the wiring in the engine compartement. We went through a unused grommet and ran our tach and hoodpin wires well away from anything else in the vehicle. I jhave not found any unpluged molex's under the dash nor did we take apart the center console area at all. Taking the fuse out on this circuit does nothing. Sounds like a bad sensor to me or maybe just maybe something is backfeeding. Unplugged the RS brain and retest shows no change. Anyone seen anything like this before?Top Secret, I can tell you but then my wife will kill me.

I don't know if you hit anything(sounds like you couldn't).On my 92 Caravan I had hooked up the Ign2 and accy wire and it screwed up the trip computer when I would use it to keep my vehicle running when I went into a store.BigDog

Sorry my daughter interupted me while typing.I had the 2nd and accy reversed.BigDog