Attention: TDR Forum Junkies 
Hi Guys--so as stated, grenaded my 2015 3500 Mega Laramie 6.7L w/Aisin. I live in New Hampshire and slid off the road down a very steep embankment while in 4HI. After coming to a stop, I was sitting drivers side uphill for a few minutes while my friend, who was right behind me in his 2012 CCLB 3500, got his truck in a position to try to extract me with a strap. He got setup and gave a pull, resulting in me still very stuck but facing uphill now. Truck is still running at this point--can't put an exact time on it--probably 15 mins. All of a sudden the engine starts redlining and pinging off the rev limiter. I checked the gas pedal for obstruction, slammed brakes, attempted to shut down, put in neutral. Nothing stopped the runaway. This went on for at least a minute, maybe 90 seconds. The cab and exterior filled with smoke that smelled like a mix of roasted clutch and oil. After displaying the "Engine Overspeed" message on the EVIC, the engine made some awful sounds and finally shut down. I got out of the truck to find oil leaking out of the forward end of the engine and out the exhaust. Almost no cosmetic damage. We finally got the truck out with an agricultural winch attached to a tractor after 2 tow companies said they couldn't do it.
My theory (and the theory of some CumminsForum guys) is that due to the steep angle while the engine was running, oil filled the crank case vent filter, got drawn into the turbo from there, and ran away on its own oil. Seems logical to me and I can't come up with a better explanation. I just wanted to share my experience and give everyone a heads-up. If you are in a similar situation, I would suggest shutting down the engine ASAP if you go off-road unless you need the power to get yourself out.
My insurance company and local dealer are cooperating so far, but it only happened 2 days ago. I would really appreciate if anyone has a contact at Cummins/Chrysler I could pass this info on to to see if there is something they could do to enable us to shutdown a runaway engine. Rapid air shutoff is really the only way to stop it at that point.
If anyone has any suggestions or ideas, I would really appreciate hearing them. I am VERY hopeful insurance and/or Chrysler take care of it without too much hassle.
My theory (and the theory of some CumminsForum guys) is that due to the steep angle while the engine was running, oil filled the crank case vent filter, got drawn into the turbo from there, and ran away on its own oil. Seems logical to me and I can't come up with a better explanation. I just wanted to share my experience and give everyone a heads-up. If you are in a similar situation, I would suggest shutting down the engine ASAP if you go off-road unless you need the power to get yourself out.
My insurance company and local dealer are cooperating so far, but it only happened 2 days ago. I would really appreciate if anyone has a contact at Cummins/Chrysler I could pass this info on to to see if there is something they could do to enable us to shutdown a runaway engine. Rapid air shutoff is really the only way to stop it at that point.
If anyone has any suggestions or ideas, I would really appreciate hearing them. I am VERY hopeful insurance and/or Chrysler take care of it without too much hassle.
