DTC P0351- P0358 Coil failure
Hi! My name is Chris. Like your forum and been reading it since I bought my truck last December. Very informitive. I do all my own work because I own my own shop. My truck is a 04 f150 supercrew with Roush supercharger, electric fans, 4.56 gears, leveling kit, 325/65/r18 tires just to name a few mods. I live in west valley ny. I am looking for some info on a problem that I am having, maybe someone has the same problem and appreciate any info. I put the Roush charger on this truck late last summer and did all the mods. We then drove the truck to Roush for a tou of there facility. Very impressive! On the way back home the truck seems to have a miss coming up one of the hills and throws an engine light. We were about 50 miles away from home and it seem fine so i drove it, not missing anymore. Got home plugged my otc genesys into the truck and found code P0351 Ignition coil a circuit malfunction. Looked on my shop alldata computer and it reccommended pulling the crank position sensor connector off and packing it with dielectric grease. Did that and also packed the connector for the coil pack A cylinder 1. Cleared light and no problems. 2 Months later stepped on brakes hard to miss some birds on the road and the engine light came on. Got back to the shop and plug in A,B,C,G,H coil secondary primary malfunction. Thinking water in tank, doesn't make sense because no misfire code. Did not stumble or feel like a misfire this time. Added drygas to tank with some fuel injection cleaner and reset the light. Both times it has been sunny 60-70 degrees. All good for about another month and now anytime I get on it and let off immediatley it starts to shudder and shake under constant load, no engine light, thought tranny, but under constant load while shuddering I turn Overdrive off and is still there, and even into second still there. 80% off the time no problems. Yesterday 28 degrees out roads wet, shuddering under load at various points with no light, let off gas and the engine light came on. Back to the shop, all 8 coils secondary, primary circuit malfunction. 26,000 miles on truck, 5,000 miles on supercharger setup with the roush revised plugs for this setup. Can't believe it would be crank position sensor, no code. All eight coils? Runs fine at idle, 80 percent of time no problem. The description i get from alldata is after the coil fires to the plug it sends a voltage spike to the computer to the ignition diagnostic monitor incorporated inside the pcm. Any help or info on this is greatly appreciated. I was hoping some one had encountered this problem and figured it out. By the way it is a 5.4. Thanks again and sorry for the long post.