Hi guys!!

Just got my bighorn a couple a months ago with the hemi engine and when driving along starting at 50mph to about 70mph give or take with light pressure on gas pedal the engine seems to be making this weird noise, kinda sounds like computer is shorting. The radio needs to be low or off to hear it.

 

That's what it sounds like when it's running on 4 cyl.

 

so thats normal? i didnt think it was mds because when eco light comes on it seems to be less noticeable

 

Try reading through this an see if it answers your question:

https://dodgeforum.com/forum/4th-gen...rom-dodge.html

 

i do have the shutter and a bit of drone with mds but the noise im talking about isn't a shutter its sounds like if a computer is shorting-rattle and its only at those speeds

 

I dont know if my mds is active. I cant tell if its working or not.
Is there anyway to really know when it is in 4 or 8 cyl mode?

 

depends on the truck....some of them you can feel the lack of power and the slight kick when the v8 comes back on......you feel it more at lower speeds