I have a 2003 jeep grand cherokee that I recently did some offroading with. I got stuck, which did not take much force to get out of, but it did give me a concern. While I backed up, I started seeing smoke coming from the engine and I smelled something buring. After about 45 seconds it was all gone. Once I drove the car soon after it was running fine. The temp gage was right where it should be the whole time. Any thoughts on what this could have been???