Thanks again guys. Thinking back and not knowing when it broke there is a situation that nine out of ten times happens at the same spot just getting off of a 70 mph highway exit that I have chased for some time. After about ten or more miles of highway driving we pull off on a slight uphill grade off ramp to a stop sign and make an also slightly uphill grade left turn over the overpass,. The van will hesitate slightly or even badly and only lifting or feathering the throttle will stop the hesitation. Do you think this might be a fault of a broken or bad knock sensor? I checked and the knock sensor is around $62 on average

Thanks,

Mike