I had the same problem with a 1999 Expedition and it was a bad plug. Ford had a problem also with the plugs blowing out. It cost me about 1200.00
An engine cylinder misfire has been detected on the # 1 cylinder and the # 8 cylinder firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
An engine cylinder misfire has been detected in cylinder # 1
First cylinder on the passenger side.
Fear???????
the number 5 cylinder on a 1998 Ford Expedition 4.6 liter v8 is the first one you see on the drivers side front.
This means that your engine is misfiring on cylinder #3. It is either a bad sparkplug, wire or coil.
i have a 1998 ford expedition and i had simaliar to the same problem. does it feel like your loosing power? on my truck it was a misfire on my engine coil i would get that check out
An ignition misfire has been detected
its a Nissan for starters but it could be the plug wires or the plugs or the distributor
There is a good chance the hose leading to the EGR is leaking or has collapsed
Theres three coil packs; one fires two cylinders. I suppose if one is bad then it could cause the two corresponding to misfire. I had one cylinder misfire, it turned out to be the fuel injector.
you have a cylinder misfire