Chrysler Chrysler Rough Idle Rough Idle Chrysler Products 2.2L Engine Chrysler products equipped with a 2.2L non-turbocharged engine experience some rough idle characteristics. Chrysler changed the PCV valve to part #4343581 to correct this problem. It is equivalent to NAPA Echlin part number 2-9209. If you experience a rough idling 2.2 Chrysler product, check PCV valve number and use NAPA Echlin part number 2-9209 in place of the NAPA Echlin recommended 2-9208. Visit our Resource Library for available downloads