I have a 2007 Ram 1500 Quad with a 5.7 Hemi. It recently started to cut out at around 35-40 MPH when the RPM's are hovering around 1500-1700. I have been running 91 gas and have ran two bottles of injector cleaner thru the crazy thing. Is this the MDS or should I look elsewhere?

The truck has good power and seems to work fine otherwise.

Thanks!!!!!!!!

 

Is there Check Engine light ON? Are there any Codes?

 

It shows no other issues. No lights at all. I have not hooked it up to a computer for any error codes.

 

my 05 without MDS really bogs down around that speed its a common problem a tuner will fix it

what do you mean by cut out?

 

Sounds like the MDS kicking in. Usually the tach will rise a couple hundred rpm when it kicks in. Put it in tow/haul mode and see if it goes away, if so, it's just the mds doing it's thing.

 

I agree, I work for a roofing company and we spend a lot of time in neighborhoods where the speed limit is 5-30 mph. The truck goes back and forth from MDS on to MDS off the whole time. I just put it in tow/haul mode when I have to drive at lower speeds.

 

I will try it out tomorrow. Is there a way to shut of the MDS?