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AZTechBrian, ASE Certified Technician
Category: Dodge
Satisfied Customers: 669
Experience:  Owner
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I have a 2011 Dodge Ram Laramie Longhorn 5.7 Hemi. Check

Customer Question

I have a 2011 Dodge Ram Laramie Longhorn 5.7 Hemi. Check engine light started flashing when accelerating hard. Seemed like truck quit pulling like it should and had a buffeting noise. Backed off throttle and it smoothed out. Check engine light went off. 10 miles later during acceleration, light came on steady. Code pulled is #3 cyl misfire. Cleared code - has not reappeared, but I have been babying it- no hard acceleration. Drive 150 miles a day. Any ideas?
JA: Does the light stay on, or does it blink?
Customer: Originally blinked - went away, then came on steady
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Just happened 2 days ago. Had code cleared. It hasnt reappeared but i have not accelerated hard since. Do not trust Dodge in my area. I am an aircraft mechanic and would like to fix myself if possible.
JA: Anything else you think the mechanic should know?
Customer: Happened 2 days after Dodge did oil change. They told me I needed an air filter that I changed with a K/N filter the day before they changed oil. He said they must have made a mistake. Did add an oil and fuel additive though.
Submitted: 2 months ago.
Category: Dodge
Expert:  AZTechBrian replied 2 months ago.

Hello. Most likely you have an ignition coil that is beginning to fail. You may want to replace your spark plugs depending on when they were changed last. 5.7 Hemi engines do require more frequent spark plug replacement.

Customer: replied 2 months ago.
You recommend replacing #3 coil?
Expert:  AZTechBrian replied 2 months ago.

I would recommend replacing all the spark plugs if it's been a while, and, if it were my truck I would replace the #3 ignition coil since that's the most common cause of a misfire.

Customer: replied 2 months ago.
Thanks Brian - I will let you know if this clears it.
Expert:  AZTechBrian replied 2 months ago.

Sounds good. I'll be around.