Stop in for a cup of coffee

Jeep caliper to change, and plugs in a ford edge. Owner says transmission is skipping. I go for a ride,no. Itsa misfire. I know i have never done plugs on this one,and its gone lots of miles since he bought it.
Skipping? LMAO Gotta love customer's descriptions. "Cuttin' off" was a popular one in these parts. That could mean a dozen different things. 13 years at the service desk and I have heard them all. Sometimes driving around the block with the customer to confirm the issue, is time well spent.