Originally Posted by Drew2001
Hey guys I have a 2001 Dodge Ram 1500 5.9 Off road package 150,000 miles. About a month ago while driving between 40-50 and around 55 she started jumping. Cant tell if its the drivetrain or a fuel/ electrical problem. I did find a loose ground on the battery last week and thought for sure that fixed it, but shes still doing it. All fluid levels are good. tranny fluid/filter was replaced last year and is still pink with a hint of gray. I do plow occasionally with the truck, but not commercially. I thought about fuel filter replacement, but from the sounds of it there is no inline? plug wires are new and coil is a yr old also. Any input would be awesome. Thanks
I'm guessing by jumping you mean the tach is surging? Not the vehicle is literally jumping? Well it can be anything from a ECM failure to misfire. Try checking fuel pressure and try high idling the engine and see if it surges. You're best bet is to have it hooked up to a diagnostics took because you can get so much sensor data and you can check ignition timing, fuel sync, and so much more.