So since ive had this commander (3 weeks) its gotten terrible mpg. Like 14 on the highway driving like a grandma. And initial acceleration was sluggish. Needed to press on the gas for it to actually accelerate. But no check engine lights or anything. A week ago I noticed the air intake temp sensor was gummed up with carbon and the trottle was caked with Crap. I took a dry paper towel and wiped what I could. Instantly jeep is more responsive and getting closer to 18 mpg highway. At first i was like YES issues solved....well then i started getting low and high idle check engine lights after a little bit. I figured it was either to much of a change for the computer or the throttle was still to gunked up. So today I removed the throttle and cleaned it very well. No buildup what so ever. I cleaned the sensor a little more aswell and for good measure I seafoamed the engine because there was also alot more carbon in the manifold. Now its still driving great, alot better than a week ago. Now after this deep clean its stalling when its put in neutral or park. Very rarily while coming to a complete stop it'll also stall. But if I start the car again, nothing. Its just fine. Unless I rev the engine then itll stall and itll do it again if I move the car a little bit then put it back in park. Its giving the red like lightning bolt light aswell. Only thing i can think of is disconnect the battery to try to reset everything (trying that now) but I dont know if this will work. Anyone know whats going on or how to fix it?