[rickerho]

Hi, I have a 1997 grand caravan. When going up a steep hill and accelerating hard it makes an awful rattle noise that sounds just like pre ignition knock, and it seems to lose power if you keep your foot into it. Do you think this is pre ignition knock or could it be the torque converter? Would the knock sensor not take care of pre ignition?
Thanks in advance, any help would be greatly appreciated.