Hey guys i have a 2001 ram 1500 with a 5.2L and lately i have notice that my truck jumps not a big jump, a slight one when im idling or im stoped in traffic the jump feels like its coming from the back end of the truck, i did change my plugs a few weeks ago but i know thats not it i do have the stock exhaust system, i checked under my truck and my pipes are little rusty, could that be the problem?

 

Sounds similar to a problem I had. Does it feel kindof of like somebody tapping you in the rear end. If so it is most likely your torque converter or tc lockup solenoid. My tc went bad and I kept driving it until I had the cash for a complete rebuild. By the time I had the cash the tranny had to be rebuilt because the tc had contaminated the entire tranny pretty bad.

 

clogged cat possibly