1996 Dodge Caravan

I noticed a sudden shake when I drove my van around today. I drove for 45 minutes without any problems but on the way home, the van shook. It happened fast and sudden and then everything was normal again. My mom drove it earlyer and said she had the same shake that resulted in the van stalling on the side of the road. She starded it back up and was able to make it home without problems.

The van will run and shift great without problems 90% of the time. It happens fast and sudden and usually wont last more than 4 seconds. It reminded me like if a spark plug wire was pulled while driving and than plugged back into the cap.