I've got a weird problem. I'm new to this so if what I ask is stupid, please forgive me (after all there are no stupid questions-only stupid people!lol!)
I have a 94 Sentra. Everytime I turn on the AC, the check engine light comes on. I ran the diagnostics on the computer, but it always flashes 5 long and 5 short (which accourding to my trusty Haynes manual means there is nothing wrong). After that the light goes off until I turn the AC on again. What is going on? Any help would be most appreciated.