Review on 🔥 Maximize Performance with Motorcraft DG544 Ignition Coil: Product Review and Shopping Guide by Rick Booth

Nothing to say. This is the original Motorcraft coil. The original 2006 Ranger 2.3L coil number ended in -C. This one ends in -D, so it's probably a redesign. Hope for improvement as the original coil in this truck only lasted 10 years and 60,000 miles. Listen folks, I'm an experienced diagnostician with the best equipment available, so please listen to me. Coils don't usually fail for no reason. What kills coils is high resistance in secondary ignition components (plug, wire, cap, rotor). This happens because you don't tune when needed or use cheap tuning parts. Start Motorcraft. This truck was a 2006 with 60,000 miles and the truck was in great condition. Apparently well cared for. It had original Iridium Motorcraft connectors and cables. I sampled the ignition coil voltage signals (both control wires) and amperage with my picoscope. I have seen half of this coil short in the primary windings and misfiring at any real load on the motor. The spark jumped about 1/4 inch on the two terminals, about 1.5 inch on the 3rd and 3/4 inch on the 4th. After I've got the job done (motorcraft coil, double platinum spark plugs, wires) it's back with every component I replaced. The waveforms were wrong until I replaced everything. The candles had particularly bad waveforms. The wires could be longer but not the spark plugs... Eventually they would kill the new coil So when you change the coil think to yourself what killed that coil?