Ignition System
The 2.8L (VIN S) engine is equipped with the High Energy Ignition (HEI) distributor system with Electronic Spark Timing (EST).
The 2.8L (VIN W) engine is equipped with the Direct Ignition System (DIS). The system uses a 3-coil module assembly with a crankshaft sensor in place of a distributor.
The 3.1L, 3.3L and 3.8L engines are equipped with C(3)I waste spark ignition system. The system uses a 3-coil module with crankshaft and camshaft sensors in place of a distributor.