Strange bump/cough/jerk in the morning

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ronhartless

Junior Member
Joined
Dec 4, 2016
Posts
1
Reaction score
0
Ram Year
2012
Engine
Cummins 6.7
Hey everyone. Just purchased a used 2012 Ram 3500 Cummins High Output Long Bed for towing my travel trailer. I've noticed that in the mornings, at low RPM (~1500) and typically only when going uphill (more so when towing), and around 55 mph, i get a strange bump/cough/jerk. it's quick, but causes the truck to jerk a little...nothing violent. the RPMs seem to stay the same. It might happen a few times in a row. I've not noticed it later in the day when it's warmer. it's difficult to reproduce on demand.

Any ideas of what it could be, or what i could do to troubleshoot this? Or better yet, recreate or better explain it to the dealer?
 

RamCares

Senior Member
Joined
Jan 21, 2016
Posts
3,783
Reaction score
1,516
Location
Michigan
Ram Year
n/a
Engine
n/a
Hey everyone. Just purchased a used 2012 Ram 3500 Cummins High Output Long Bed for towing my travel trailer. I've noticed that in the mornings, at low RPM (~1500) and typically only when going uphill (more so when towing), and around 55 mph, i get a strange bump/cough/jerk. it's quick, but causes the truck to jerk a little...nothing violent. the RPMs seem to stay the same. It might happen a few times in a row. I've not noticed it later in the day when it's warmer. it's difficult to reproduce on demand.

Any ideas of what it could be, or what i could do to troubleshoot this? Or better yet, recreate or better explain it to the dealer?

Hi ronhartless,

Sorry to hear about this! In my experience when a concern is difficult to duplicate offering to do a test drive with your service advisor or technician can help. If you decide to visit your local dealership I'd be happy to follow up with them for you if needed! Just PM our page with your VIN and let me know.

Andrea
Ram Social Care Specialist
 
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