EverydayDiesel

On the way home i was getting surging around 1250-1400 rpm. Any one seen this problem? Works fine in all gears except for that rpm in over drive (4th)

dozer12216

In lockup at that speed it is luging the engine of sorts. Just a little more throttle and unit downshifts and problem is gone.

EverydayDiesel

it downshifts to 3rd and then quickly goes back to 4th...it constantly goes back and fourth. it has never done it before.....

JVDodge

Found an interesting fix for the tranmission torque converter engage/dis-engage issue that seems to be very common. Many fixes evolve around grounding and EMI (Electro Magnetic Interference).

I found this interesting information while digging for solutions! I thought I would pass this along.

Suncoast makes excellent high performance torque converters for Diesel trucks. See the attached symptom/solution link (APPS Rewire Ground Instructions)

http://www.suncoastconverters.com/dodge/drewirekit.html

Note: I copied this from a post I posted several months ago. I performed this direct ground to the APPS and I have had zero problems since.

EverydayDiesel

thanks for the guide I will do this tonight