I haven't gotten my Jeep back from the shop yet, so I figure what the hell, I'm bored, lemme ask here and see who can guess what went in the Jeep. I should find out tonight or tomorrow when I get it back. '94 Jeep Cherokee, 5 speed, A/C manual windows, 2-door. 2 fans on radiator, mechanical and electrical that switches on. Here's the story. 6 months ago I hit a tree with the right front wheel, tearing the fender up, warping the hood, and I guess the radiator went (mainly hit fender and wheel). So the body shop puts me back together with aftermarket parts, including new hood and radiator. I don't have a temp gauge, just a light that comes on. 2 weeks ago, the light came on for the first time, was sitting in traffic for construction for 15-20 minutes stop-and-go. Humid but cool day. It went off after a bit when I left construction. While sitting there I ran the heat to cool it down and the heat came out cold, never warmed up. Next day saw I was low on coolant so filled it up. Last saturday, drove for a bit and the light started flickering on and off. I've been bad an not monitoring my fluid levels. I get home, park it backwards to check it before I go. Then we get pouring rain, so I don't check before I hit the highway. The light comes on after 5 miles of highway driving, I stop at the 12 mile mark under an overpass and put in coolant, it was empty and I put it to full. The light goes out from sitting and I drive with it off. Then it goes on again in 1 mile and I panic realizing this is a problem. I pull at a rest stop and check, none of the coolant has left the overflow bottle. Also both those times steam (I guess, smoke with no smell?) came out the front of the engine at the stop by the hood latch, the second time a lot, and it was hot. Could have been steam from the rain. So my friend comes and gets me and is better with rigs than me from running more junkers and feels the top hose saying there is no fluid in it, even when he milks it and I start it for a bit. He thinks it is water pump or stuck thermostat. Could it be something else? What do you think broke and why? Free cookies to the winner.