Six problems related to ignition have been reported for the 1999 Ford F-150. The most recently reported issues are listed below.
The engine surges or quits as I am driving. This happens every 8 to 10 miles. I can be going 75 mph on the freeway when it quits and I have to shut off the ignition to restart it. This is at least the ninth time this truck has done this since it was new. I think you can imagine what it's like to be going 75 miles per hour and your engine quits and you are left with no power steering, or brakes. This will be the ninth coil I have replaced on this motor. Ford is completely aware that there has been a problem for years with this size motor. I can't believe an engine that shuts off at 75 miles per hour has not been considered a safety concern before.
1999 Ford F-150 blown spark plug. I replaced the spark plugs on my F-150 approximately three months ago. I replaced the original plugs with autolite double platinum plugs. Yesterday (June 13, 2004) while accelerating from a stop light, I heard a loud bang from under the hood. Luckily I was only about a mile away from home. Once there, I raised the hood and found that the number two spark plug had been blown out of the cylinder head. It destroyed the coil pack as well. It appears that when the plug blew, it shot up into the coil pack thereby destroying the coil. Since the ignition wire is part of the coil pack, it further appears that the compression of the rubber insulator acted like a spring and pushed the plug back into the oriface with enough force to break the white insulator at the bottom of the plug and and slam the tip into the electrode. I was able to remove the plug without incident. I did not find any remnants of aluminum in the spark plug threads. Since the plugs were changed only a few months ago, I still had the old plugs. The damaged plug was replaced with one of the old plugs. The threads felt as though they were still intact, and I was able to get the replacement plug back in without any modifications. It was tightened down, just snug, not tight. The coil pack on that cylinder had to be replaced. The cost from autozone was approximately $45. 00. I will continue to watch and listen for any tell-tale signs of the plugs backing out as described on the F-150 web page. I do recall a "ticking" noise about 2-3 days prior to the incident.
I have had a new transmission and motor,5 speed 4. 2l v-6,put in at 55,000 miles. Now at 73,000 miles it has a miss when you accelerate or go up a hill. Dealer told me to replace the plugs and wires so I did. It still does it and now they are tailing me to replace the coil pack, any suggestions?.
Passenger side rear cylinder spark plug mount stripped and blew the spark plug out causing engine damage. Dealer told me the head needed to be replaced $$$$. I contacted Ford and they couldn't find any information on the problem I had. They forwarded the complaint on to their engineering department and I have asked for an arbitration package for the 'dispute settlement board'. Same problem as oid 760618.
Vehicle stalls for no reason intermittently, dealer changed fuel, but that failed to correct the problem.
While traveling and without any indication vehicle stalled. Engine check light came on, and steering wheel locked up. Please provide further information.