I know it didn't jump timing. If a chain does that there's going to be some noise and you're right, these chains are made great! DIS system so I will check at the top of the bell housing for pinched or oil soaked wires but believe it or not this truck has no oil leaks. I guess it comes down to checking the wires from the computer to the coils. I've been looking for a good wiring diagram for this 02 Ram. Can't find a good one on the Internet. 💀