Has anyone had this issue? My new to me van has had the check engine light come on 4 times now. Each time it flashes, dings, and the engine or transmission seems to shutter and not run properly. When I drive it for 1-2 miles, the light clears out and the engine/transmission returns to normal driving conditions. I've had it in the dealership twice now and they said there is no code and nothing they can do as the van seems to clear and correct the issue. I'm floored and so bummed to have went out on a limb for my first CJD product and love it, but not happy about this issue.