Broken temperature gauge?
Just to start, my girlfriend and I bought a 1988 jeep cherokee a couple weeks back so it's fairly new to me. The other day I had to make a fairly long drive and I was unaware that the coolant had gotten low. Low being none at all. Yes, stupid me. Forgot to check the fluids and such. Well it was a hot day and I had run it fairly hard. Of course not knowing that the coolant is low, I use it for the rest of the day and everything goes as it should. The next morning I had to get up earlyish and head out. Tried to start it and it wouldn't catch. It turns over but doesn't catch. So that's when I finally looked and saw that the reservoir for coolant was bone dry. I put some water in it ad tried to start it again. It still didn't work too well. I looked in at the temperature gauge and it was maxed out right to the little screw. It goes right up every time I try to start it. Looking around I think it may be the coolant sensor or temperature sensor that needs to be reset and I have no clue how that works. Now, I'm just wondering if that is the problem, and if so, how it can be fixed without being hauled to a mechanic. If not, what might it be?