i know that its a e.g.r. problem, but the strange thing is it started during my first drive in the rain,ran perfect until it started raining then,went to poop.problem is it's not wet anymore but low idle is still rougher than crap.feels like misfire but it doesn't do it at slightly higher rpm's.i haven't cleaned the egr yet but i would like to get as much info on this prob before i go tearing into it.My truck is my livelyhood,so i need it fixed asap.i've done the "try searching" gambit and found diddly squat in the way of diffinitive tech articles.also it has 122,000 miles

 

well, i spent the day workin on this problem and after replacing the spark plugs(never pull on the wire instead of the boot...as i found out today)and taking the egr off and giving it a good thorough cleaning it runs better than before it went wonky.also i dont know if it made a difference or not but the round thing with the flap on top was also cleaned during too.i cant remember who did the write up on the egr cleaning but thanks a millioin.i was only out the cost of the gasket for the egr,throttle body cleaner and plugs.

 

yeah those W code engines really seem to foul up the EGR for some reason. i check the one on my brother's truck every Spring, before he pulls it out of storage for the Summer. i've had ppl tell me, "oh, that's because you're not using a quality fuel in it". funny, i thought Sunoco was a "top" quality fuel, maybe somebody should tell NASCAR this, hahahahaha!