Is a 1994 Plymouth sundance an interference engine?

The 1994 Plymouth Sundance used several different engines. Some were interference engines, and some were not. You need to specify which engine is in the car to get a definitive answer. The most common engines would be either a 2.2L or a 2.5L four-cylinder. Both of these *could* be either interference or non-interference depending on the specific internal components. Therefore, simply knowing the year and model isn't sufficient.