I have a 2001 f150 4 wheel drive with 89k. automatic with 355 limited slip
After driving for about one half hour, taking off from a dead stop I get a shutter, I feel it throughout the truck. This only happens after the truck is warm. thanks

 

possible egr stuck partway? check tranny fluid level too. that would be my guess but hopefully someone else will chime in and give their 2 cents

 

I forgot to mention it feels like it's in the drive train not the engine, the more load I give it the more shutter.