So I've been having surging and sputtering happening for a couple weeks now. Thought it was caused from the evap vacuum leak so I fixed that and it got rid of the surging but not the sputtering and backfires. Drove the truck to Arkansas yesterday and it did awesome but the engine light came on. Ran the codes and it came up as multiple misfires. Drove it again today and this time it died on the highway
So I limped it to the parts store and ran the codes again. This time it was multiple misfires and a P0351 for ignition coil failure. So I bought a new stock ignition coil, cap and rotor and replaced it all. Now it's running absolutely perfect! We'll see how the 280 mile trip back to Oklahoma tomorrow goes.
It had a MSD coil so just like I've heard from alot of different people, stay away from them!
The stock mounting bracket for the coil is gone so I got a little creative...