Four problems related to ignition coils failure have been reported for the 2003 Ford Expedition. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Expedition based on all problems reported for the 2003 Expedition.
After accelerating from a stop, a loud bang was heard. What had happened? a spark plug blew out of the aluminum head, taking the threads with it. I was not aware that fuel would continue to blow out of the spark plug hole which could have been ignited by the ignition coil or exhasut manifold. Ford is aware of this issue, but has not recalled the defective aluminum heads, but rather offered a repair kit to fix the stripped threads when this issue occurs. This could have been a very different ending if the fuel would have ignited.
My wife was driving with our infant son and our teenage daughter in our 2003 Expedition XLT 4. 6l 2x4. She heard a loud pop and the vehicle lost power and started smoking and shaking violently. She thought the Expedition was going to blow up. We had the Expedition checked out and the cylinder number 7 spark plug blew out. The aluminum threads in the head gave and the spark plug blew out, the injector kept spraying raw fuel and the coil ignited it. When all this happened it burned the ignition coil, coil boot, spark plug and the coil harness. Now we were told we would have to have the cylinder head replaced. We love our Expedition and I considered buying a new one, but I don't know now.
The contact owns a 2003 Ford Expedition. While driving 70 mph, the entire vehicle began to jerk and ride roughly. The contact stated that the service engine light illuminated. She pulled over and turned off the vehicle. She restarted the vehicle and drove to the Ford dealer. The dealer performed an ids diagnostic and pinpoint test and discovered that a cylinder misfired on cylinder number 4. The dealer replaced the ignition coil and spark plug assembly. The current mileage was 74,800 and failure mileage was 74,776.
Vehicle underwent normal driving. 2. Suddenly upon starting the vehicle a loud popping noise from the engine compartment was heard. There was loss of power, and would continue whenever the engine started. The odor of gasoline and oil was emitted into the vehicle. The vehicle had to be immediately brought into a Ford dealership. Instead of replacing the entire head as required by Ford , helicoil, spark plug, and ignition coil had to be installed by the dealership.