hey guys, i've got a pretty bad misfire goin on. the truck is stumbling all over the place in the lower rpm ranges. the only problem is it's not throwing any codes. the cel has been blinking which, from what i have seen in searches, means a random cylinder misfire i think? correct me if i'm wrong please. anyway, i have almost no power in the low rpm band, the cel is blinking, the truck is stumbling, and i have no codes. i'm thinkin replacing the spark plugs and wires but without a code or insight i'm gonna wait. any ideas? i need my truck tomorrow and i can't drive it like this.

 

Did you update your Superchips at all lately? Remove the Superchips tune, return it to stock, and see if the stumble is still there.

If I remove my tune, the stumble goes away. We may have the same issue. BTW, if we do have the same issue, it isn't plugs. I've changed those, didn't help. Superchips also said it isn't their tune, so its something else with our trucks, supposedly.

EDIT: I also have no codes, but it feels like a severe misfire/hesitation/stumbling at low RPMs.

 

Check your cat!!! When my cat went out it plugged my intermediate pipe. That, in turn caused my check engine light to blink and my engine to misfire on 2 cylinders. Also, did you do the TSB for the routing of the plug wires? Just a starting point.