Great, just in time for winter....NO HEAT...HELP!!!!
I was driving to school the other day, before I left, I let my truck warm up for 10 mins as usual when it's cold (it was -5* out). I was driving to school and my temp was at normal, but I noticed my heater was blowing cold air. I looked down a minute or two later and my engine temp was way the f*ck over the hot mark. I pulled over to check and it was pretty warm, so I had a friend come get me. I went back to get it after school, and I noticed something very different----it now takes a day in hell to warm up. Once I drove around more, the gauge said the egine was overheating again, so I pulled over and popped the hood.....the engine was still cold. I started driving again and the temp started going wayyyyyyy to the cold end, popped the hood again and the engine was at it's normal running temp (all that happened 2 days ago). Now when I drive it, it takes a little longer to warm up than it used to (but it runs at noraml engine temp now) and the gauge will still read cold when it's warm, and hot when it's cold....the heat still wonlt work either. All this happened on the same day (heater crapping out and the eingine overheating).
So my question, what do you think could be wrong with it? I'm taking it to a mechanic on tuesday but I would kinda like to know whats goin on. I'm thinking it might be the thermostat got screwed up and its giving the computer the wrong information, resulting in no heat and the incorrect gauge readings. Just my two cents, but let me know what you think.
1997 Chevy Blazer, 4.3 v6, 156k miles