so this only seems to happen when its above 75 degrees out and the truck is at temperature but for instance ill be at a stop light, turns green i let off the gas and the truck rolls forward with no gas and it feels like its shuddering.(maybe something similar to a really badly warped rotor on a super hard stop?) not hard but i notice it. almost like it was going to die but the idle isnt erratic or dropping. then when i take off its gone of course. anyone ever experience something like this? i could be way off but maybe u-joints?

 

Same thing I was having a issue with, here's the advice I received that helped fix my issues..
Make sure your plugs are torqued to 10ft lbs, make sure your Wires are on the Right spots on your Coil pack unless you have the COP units, possibly Buy new Coil packs, New Plugs/wires etc.. Possible bad O2 Sensors, up and down stream, IAC Valve, Dirty EGR Valve or Tube/Intake. These are just some ideas the cheapest one to try first is the tightening of the plugs.. Hope this helps please let me know what works for you, God Bless brotha..

 

hey thanks for the advice man, was plannin on doin the plugs within the next month and i will prolly end up doing the coil packs cuz i see that before i got the truck, a couple have been replaced already. IAC i took off about a month ago and cleaned it really well along with the throttle body. actually had a completely clogged port on the body. the EGR looks fairly new but that doesnt mean anything. i might even just replace the O2 sensors, emphasis on MIGHT lol. i will see if the plugs are tight though first, thanks again man.

 

Its gonna be the coil packs most likely.. I just recently had the spark plugs replaced, throttle body cleaned, maf replaced, iac replaced, new air filter and it is still doing this as well

 

are you thinking it could be the start of a small short in one of the packs that is causing the issue but not a complete failure yet? thats what i had come up with in my head but it seems like most cases its either firing or not.

 

How difficult was it to clean the throttle body and EGR Ports? How difficult to remove???

 

taking it off is easy, just get new gaskets beforehand. its really just taking off the the throttle cable, a few hoses, and some bolts. once you look at it for a min you'll see. then once its off i whipped out my gun cleaning kit and used a buttload of carb cleaner and like a .40 cal and 5.56mm bore brush to clean the tube and ports out. mine was that bad. one of the 2 ports from the egr tube was completely blocked with crud. i stood it up so all the carb cleaner sat in the tube for a while and then brushed. repeated this process several times to get it down to the actual metal.