I have a 2011 Ram 1500. For about a month I thought I was hearing a clunk between 2nd and 3rd gear. I finally decided to listen carefully by turning my radio off. I now certainly notice it, but it is very specific. It is more of a grind than a clunk when I listen closely and comes from the front of the truck. It is not between 2nd and 3rd gear, it was just a coincidence (I think). It happens before shifting as well.
That is when I noticed it only happens when I am accelerating very slowly and maintaining a low RPM. (I would guess around 1500 RPM). The constant seems to be the speed. It seems to happen between 24-26 MPH, which just happens to be when it shifts sometimes. If I accelerate too hard I never hear it. If I don’t accelerate at a constant speed, then I do not hear it. So at a constant RPM, right around 25 MPH, I hear the grinding sound. It only lasts for a split second. I can almost always repeat the sound if I accelerate correctly.
The only thing is, today, I heard the same noise at about 17 MPH while accelerating after a turn. I also thought (not 100% sure) I have heard it at faster speeds a couple times (40+ MPH), but the traffic/wind is too loud to know for sure.
Does anyone know what this sound could be? This is my first question, so let me know of any edits or information you guys need. I am just guessing the motor or transmission. All I know is it is coming from the front of the truck.