It seems as though problems come in multiples, as I have recently started a thread concerningsomepossible MAF related concerns (which I will be looking into cleaning my MAF in the near future). Anyway, normally my (coolant) temp guage is always straight up and down. The weather has been in the mid 90's lately, and today the temp guage was sitting between 1/8 and 1/4 of the way and that's it. My drive was about an hour long, so there is no reason why the guage didn't have enough time to reach its norm.

Coolant Temp Sensor?.....thermostat (I hope not! which I have heard that it can be a pita from searching)....any ideas?

Again, no CEL -