I'm a bit stumped. 2003 3/4 ton pickup with the hemi in it. 180,000 miles. Well maintained, burns no oil and has never missed a beat. Yesterday I made 3-4 stops at stores running around town. Last place I started it up and when I went to put it in gear the engine started limping as if it had lost at least a couple cylinders. Truck ran the 20 miles back home but was obviously not hitting on all 8. When you try and rev it up it accelerates like it's running on 4 cylinders.

Got home, put it in park, lifted the hood and before I even touched anything it started running fine. Drove it up and down the road a few times, shut off and restarted, but can't duplicate the problem. No check engine light. Hasn't gotten wet. Anyone aware of a unique problem with these? I'd like to address this before spring comes and I start pulling the car trailer with it. Thanks in advance guys.