So as most of you guys have seen, I just got a 2012 V8 Crew with about 13,500 on it now. So I've been noticing something odd happening.
When I am cruising, and come to a complete stop, sit for a minute and then accelerate to go, I intermittently (6 out of 10 times) feel a little thunk, which sorta feels like it's coming from the back, but I'm not sure. I think the best way to describe is as it feels like a clutch suddenly grabs, and then off I go. I'm not accelerating hard, just gentle, normal accelerations. Weird....
I thought maybe it was brake calipers adjusting (my uncle had an Infinity that did that) but that would happen after you back up, and then go forward, right? Maybe it's a torque converter issue? I can't imagine it's normal.
I did it once today and it's when I accelerate a little aggressively. Another thing it feels like, a universal joint bearing, either in the drive shaft or diff. Is there a website where we can look up service bulletins?
I'll have to do some research on that one. I do know that they show up on the MOPAR Magazine (got a subscription and that's were I get some of my info). Also, register for the MOPAR Owner's Center: https://www.moparownercenter.com/oc/US/en-us/sub/Pages/OwnersLogin.aspx Any recalls will be posted plus you can keep track of the maintenance that has been done and I think TSBs also.
Do you have hill assist? It holds the breaks for approximately 2 seconds after you let off the breaks. You could be feeling the hill assist letting go of the breaks?
Just a thought.
I don't believe it measures incline but I'm not sure. Here's something from a Ram's owners manual.
Hill Start Assist (HSA)
The HSA system is designed to assist the driver in launching a vehicle on an incline. HSA will maintain the level of brake pressure the driver inputs for a short duration once the driver takes his foot off of the brake pedal. If the driver does not apply the throttle during this short duration, the system will release brake pressure and the vehicle will roll down the incline. The system will release brake pressure in proportion to the amount of throttle applied. During operation, HSA will activate the brake control system and a clicking noise may occur. If your foot is on the brake pedal during operation you may feel a slight pedal movement. The clicking and pedal movement is normal and both will stop when HSA becomes inactive.
Personally, I don't see the usefullness of this feature unless you're an inexperienced driver with a manual transmission. I would turn it off.
I can see the Hill Assist being useful if you live somewhere like... ohhhh... St. Thomas, USVI where your practically driving up and down mountains all day long unless your by the beach. Also if your towing a trailer and you happen to stop on a steep hill (like right in front of my cousin's place in Dallas, GA... I'll let you guys know how that works in about a month)
I can't go to the dealer until DiabloSport finally fixes my screwed up tune. Even if I put the original factory tune back on, my ABS light stays illuminated...Very Frustrating.
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