I have a 2001 F150 4x4 supercrew with the 5.4L engine. I recently had the service engine soon light come on. I took it to autozone and they said it was a number 2 misfire. I replaced the plug and the boot but still doing it. Now should i go ahead and replace all the electronic ignition coils or just this one? Replacing them all will be a hefty price. But if this one has gone out at 134,000 miles i wonder how long before the others fail.

 

I HAVE THE SAME PROBLEM AS WE SPEAK I CHANGED THE # 8 CYLINDERCOIL PACK 3 WEEKS AGO ran better,goin to get on the highway today,darn engine tight comes om,go to autozone #8 cylinder gone bad,so now what,bad coil pack,i have 103,000 on my truck 2005 f-150 fx4it is a bitch to get to got it torn apart waiting on wife to bring another one home

 

I had the same problem,and on the same cylinder.Just change the #2 cylinder coil pack and you should be good to go.Mines run great since then.

 

I have a 97 5.4 that started missing no 2 had it replaced two weeks no. 4 took it to the shop had it done there 1400.00 dollars later all is beter that was at 185,000