VQ74,
We might need to bring in Lt. Columbo to solve this mystery !
If you can't see anything that's broken or cracked then you need to dig into another possible avenue.
I came across this link while making an attempt to help :)
You guys that are mechanics would be a better judge then me.
My thought is an 'electronic fault error' being sent to the tranny causing a physical-mechanical jolt in the drive system. RE *coil pack and throttle body or something other ??
https://getjerry.com/questions/why-does-my-car-jerk-when-im-stopped-at-a-red-light-
