IF YOUR TRUCK IS OUT OF WARRANTY REPLACE # 4 COIL. MAKE SURE THERE IS NO LEAK (ANTIFREEZE) OVER THIS COIL LOCATION ARE IT WILL DO IT AGAIN IN A MATTER OF TIME . FORD CHARGES ALOT TO DIAG THIS TROUBLE WHEN THEY KNOW WHAT IT IS ALL THE TIME.

 

What if it's a shorted wire to the #4 coil or injector, how would you feel if we just slapped a #4 coil on?