(40) 40 product ratings - 2× Ignition Coil For Ford Ranger 2.3L 2.5L F150 Expedition Lincoln Mercury FD487. $27.99. Free shipping. or Best Offer. Ford TFI Ignition Coil-High Performance Coil MSD 8227 (Fits: Ford Ranger) 5 out of 5 stars
Check for dirt, corrosion or damage. Ignition coil primary resistance test Use an ohmmeter to measure the resistance from the positive (+) to negative (−) terminals of the ignition coil. Page 191: Removal & Installation HOW TO USE THIS BOOK Ignition coil secondary resistance test REMOVAL & INSTALLATION Disconnect the negative battery cable.