- May 1, 2004
- Innisfil, Ontario, Canada
- MF 1635 12x12 Powershuttle
As of 2021, the 5.0;Coyote will run a form of AFM. So the only way to avoid it is to go GM or Ford HD/SD.All of the Ram MDS-related failures I personally know of happened between 90k-125k miles. These we’re all fleet-maintained and our maintenance shop is well supplied, well funded, and well educated.
Personally, I wouldn’t keep a Ram with MDS longer than 100k miles, unless it had MDS disabled right out the gate. Even then, it’s an unknown, since I have zero experience with that setup.
Still better than the GM cylinder deactivation. The previous Actuve Fuel Management cut the cylinders in half. These were known to develop oil consumption issues around 40k-70k miles. The easier the driver treated the vehicle, the worse it was. Due to this, I put the Range Technologies on my 2013 Silverado 5.3L at 3,500 miles, right when I bought it. I traded it at 41k miles and it never had any oil consumption issues.
The current GM Dynamic Fuel Management is capable of using a combination of any cylinders. This system will let the V8 run on one cylinder, if it thinks it can do it. The only good thing about this system versus the older AFM is the AFM always stopped the same cylinders. The DFM can alternate what cylinders it stops.
The shop bought a few new GM 5.3L half tons with DFM. The first engine to go was at a little over 40k. After that engine was replaced, they started having trouble with another truck. That truck had fewer miles, but also got a new engine. It has now been decided no more half tons will be purchased, at all. They will exclusively buy F-250/2500 series in place of half tons, to stay away from the stuff that breaks.
I looked at deleting the MDS on my 17 Ram 1500, was going to cost just over $7,000.
Good luck doing this now, the PCM are so secure that doing this delete is nearly impossible.