ZJGMoparman
Junior Member
I'm a little stumped on an issue with my 2013 Ram with a 5.7 Hemi. The check engine light started flashing a few days ago when I got on the gas hard. My scanner showed a P0303 - Misfire Cyl 3. Of course my first thought was cool and plugs. I swapped coil and plugs out today. After a test drive, it is doing the same thing.
Using my OBD diagnostic, i was able to get some interesting data:
The PWM for Injector 3 seems to be fine with normal driving. When i accelerate hard, the value dropped to 0 and stayed there for a little bit. During this time, i can feel the truck running a little rough. Eventually the PMW went back to normal.
Again, this issue only happens if i accelerate hard for a few seconds. I'm thinking it is a fuel related issue. Does this make sense? Any ideas of what I could check to narrow down the problem?
Using my OBD diagnostic, i was able to get some interesting data:
The PWM for Injector 3 seems to be fine with normal driving. When i accelerate hard, the value dropped to 0 and stayed there for a little bit. During this time, i can feel the truck running a little rough. Eventually the PMW went back to normal.
Again, this issue only happens if i accelerate hard for a few seconds. I'm thinking it is a fuel related issue. Does this make sense? Any ideas of what I could check to narrow down the problem?