I've had my 96 4.0 for about a month now and it has always run a bit too hot for my comfort. The factory gauge reads about 230 at operating temp with a 195 thermosdat. Today, out of curiosity, i opened the radiator cap at operating temp (230)and it didn't boil over so i stuck a thermometer in the coolant and it read between 180-200. Is the gauge or the sender no good? I have an extra autometer mechanical temp gauge lying around somewhere that i might throw in there. Any suggestions? My oil pressure gauge fluxuates quite a bit, too. It idles at 40 lbs, but the needle jumps all over the place between 40 and 80 lbs under acceleration. Bad sender?