Just wondering if that would attribute to a misfire. I have been trying to determine the cause of my misfire issues for weeks now. Tonight I was going through the fuse block under the hood and I noticed the Fuse labeled IGN A was showing a voltage of over 10 volts when all the other fuses showed zero. Is that the fuse for the driver side ignition coils?

On a side note, the same night I had misfires start my radio and amps have been staying on and I have to turn them off manually. Although that's the least of my concerns.

 

See if your wire boots are touching the headers. I have ASM headers as well, and I have to bend the boots after snapping them onto the plug so they don't touch. When they touch, they get damaged and misfire randomly, especially if you hit a puddle or something.

 

I've had taylor wires on in place of the stockers and they did not touch and then all of a sudden missing. I tried swapping back to the stockers and checking and changing plugs but to no avail. I also did a leakdown and compression test (because originally I had a cyl. 1 misfire) and those results turned out okay. Now I get multiple misfires and it only seems to get worse.

 

I have the same ****! go full throttle and I start missfiring and ****. BUt does your truck lope hard and die? mine dies at stop lights and when going from reverse to drive So I would also like to know if the coils or fuse may be the prob.

 

Mine always has lost some RPM and almost died from time to time while shifting and idleing like you say but has only ever died like once or twice. It's done that forever though.