Hey guys, for the last couple weeks I've been getting an intermittent vibration on tip in, sometimes severe. My initial instinct is that it's a torque converter lock up issue but it can come and go. Putting it to the floor and downshifting almost always stops it but today when it did it, the MIL started flashing then stopped and remained lit when the symptom stopped. I pulled the codes and it was 3 occurrences of P0302 cylinder #2 misfire. Cleared the codes and drove it 40 miles home today with no issues. Any help here would be greatly appreciated. I will say though, I live in Michigan and it has been under 20 degrees for at least 2 weeks. I also have 37s (with 3.55s) on the truck if its a torque converter issue.

Oh yeah. more info: 2012 1500 Express Hemi 90,000 miles. 6" Rough Country lift with 37 x 12.50 20

 

More than likely its that miss you are feeling, and not necessarily trans related. You can clear the code, and it won't come back right away, but, that cylinder is likely still missing. How old are the plugs?

 

Thanks for your reply, everything is still original ~90K. Will just have to let it ride for a bit and see what happens

 

Change the plugs.

 

Certainly a good place to start but why does it always have to be zero degrees. I know, I know, should have changed them 6 months ago at 82K but they used to last 100K easy.

 

your truck has 30k mile plugs, the new trucks (2014 & up I think) got the 100k ones. I did 3 changes on my old 09 ram and each time the plugs came out looking like new, but 90k is too much.

 

You do understand that your truck waits for the crappiest weather to develop issues. Right?

 

Yeah both our trucks were running strange today due to the weather. It normally does not get this cold (37/26) in Houston. Got the CTEK charger topping off all the batteries just in case.

 

Well, it finally warmed up enough to change the plugs and that seems to have taken care of the issue.

 

Awesome.