2005 Ram 1500 5.7 Hemi, did something the other day it's never done before.
It started, idled and drove out of the yard fine. Pull out on the road and lightly start to accelerate, and it starts acting like I'm on and off the throttle really fast, fluctuating up and down, but I'm keeping a steady push on the throttle. I back off and keep the throttle just enough to do about 30 mph and its fine. As soon as I push abit further it does it again. Push further down and it smooths out for the most part. I drop my kids off at the birthday party down the road (maybe a mile away) and drive out to the highway (about 1.5 miles back). The engines fairly warmed up now so I floor it and it goes through the gears no problem up to about 75 mph and I stop there. Drive around abit and it's fine, even under light acceleration. Anyone ever had this?