One problem related to engine has been reported for the 2009 Dodge Ram 1500. The most recently reported issues are listed below.
While normal driving the vehicle doesn't seem to idle right. At times the engine will rev a little then lets off, then back up and so on. Also under normal acceleration the rpms will climb about 100 then stop going up then bump up 100 then stop again and so on until accelerator is pushed harder. During first drive in the morning vehicle will accelerate then suddenly the rpms will drop to about 1000 then a slip second later the truck will kick back in.