I have been having trouble with my wifes truck. When I slowely accelerate through the gears, especially when I am slowely pulling out of the low end of drive say around 50mph it will lose power and shudder. I let off the gas and it stops the shuttering. I reapply the gas a little more aggresively and it will pull out of the bottom of the gear just fine, but if I softly reapply the gas it will shutter again. If I accerate from a stop up to highway speeds, it doesn't do it at all. Only when I am slowely accelerating through the gears will it do it. No other problems other than the shuttering at low rpm/high torque conditions in drive around 50-60. Its not a clean slipping action like a transmission would give you when it is going out. Its a shuddering vibration through the drivetrain for what I assume is the transmission. Did some research and somebody mentioned plugs, wire, or coil could be arcing at low rpm/heavy load conditions. What do you guys think. No CEL, or stored codes.

 

god, please don't let it be the torque converter.

 

Not a ram know it all I was a GM guy myself till now, are you sure its not a mis in the engine? I've had that before, a old GM fix was running a bottle of seafoam in tranny run it a few days to clean the inside and loosen varnish then change the fluid and filter and add a half bottle of seafoam to keep it clean. How many miles and what year RAM?

 

120K on the clock. I had the transmission serviced awhile back when the rearend went out. This is something that has gradually come about. Every once in a while it use to do it, now it does it all the time. Whenever I am pulling out of the low end of the gear around 50 mph or so, it shutters in the drivetrain, and there is no power. Out of curiousity, I have tried to accelerate through it but it won't accelerate, but only shutters at that speed. Its not until I let off the gas and reapply it that it stops. And thats only if I accelerate harder, if not it will do it again.

 

check the driveshaft

 

Output shaft speed sensor maybe.

Remove and inspect, both input and output sensors. Drivers side of tranny, one bolt on each. Cheap to replace if needed, cleaning could help.

 

What year truck is it? 06-08? Hemi? Sounds like the MDS kicking in to me. Quite normal feeling when in 4cyl mode. But it should turn off if enough throttle is given.

 

Any luck?