Greetings, so here's the symptoms, driving to work yesterday afternoon (hot day in the 90's) the temp gauge starts out in the normal range, drive a few miles and notice it's up near the hot area, after a fear more miles it starts to drop and goes down to almost normal, a few more miles and back up, it fluctuated like that most of the trip (15 miles) and then stayed just below the red hot area the last few miles, when I parked it, looked under the hood and didn't see any leaking or steam, so I thought I might be a short in the temp gauge. After work (it was dark and late could see or do to much) started driving, temp was ok for the first mile or so, then went up just below the red area on the temp gauge, stayed there a few minutes came down to normal area for another few minutes, then went back up to just below the red area on the gauge and stayed there for the rest of the trip, I had the heater controls on the dash all the way up to see what that would help, it seemed to a help a hair, but the gauge was still near the red area, and it was blowing hot! It's Sunday morning and I'm about to go out see what's going with the over heating, any ideas what it could be? Thermostat was changed about thousand miles or so. Thoughts, thanks for your help
GP