I am struggling with sorting this as EGR problem or TC problem. The shop threw in some anti-slip but no change. For me, it's when rolling into the throttle at highway cruising speeds. I've taken mine apart and cleaned it thoroughly so next I am going to try a vacuum test on my system to see if I have a leak. I'll also try this test to see if it's TC or engine, really hard to tell.
If you have a misfire in one or more cylinders it will do this, also. A weak spark in a low RPM/rich-mid to heavy throttle condition will not fire properly. A plug can have a blazing blue spark out in the open air but put in under compression and it will fail. Coils, wires, and PIPs too. A cracked plug will do this. A cracked cap will do this.
I'm not saying the parts already replaced are bad, but who knows?
My truck gets a bad vibration between 35 and 45 mph until I stomp on the accelerator and get it to kick down in gear. Any ideas on what it could be and how to fix it? I've been told it's a misfire, but wouldn't I notice it at idle too?