2012 ram 1500 st 5.7l

Asked by Jimmy Dec 18, 2018 at 08:26 PM

Question type: Maintenance & Repair

#3 miss fire code
Changed all plugs and #3 coil pack
What else could be the problem
Shakes really bad and doesn't make much power

2 Answers
42,940

Hornet_2497 answered 5 years ago

Just make sure you know that cylinder #3 is the second cylinder from the front on the driver's side, so you changed the right one. Also, a simple misfire can make an engine really rattle and shake at low speeds....it throws things out of balance. And the Hemi has a "cylinder deactivation" feature, so at times, with a misfire you may be running on only three of eight cylinders. Good Luck.

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