Quote:
Originally Posted by shorod
Well, your above detailed description also sounds an awful lot like an ignition misfire. I guess I need to ask if you changed the plugs and wires because of this misfire or if the misfire happened after you replaced the plugs and wires? It would be essentially free to make sure the plug wires are properly seated on the coil towers, pull the spark plugs to see if there are one or two that appear to be dirtier than the others, and then make sure the plug wires are seated well on the plugs as you put it all back together.
You could also check the EGR valve. If it is not able to close completely at idle it can cause stumbling since that too would be a vacuum leak. The DPFE is known to cause issues on these trucks, but they typically will trigger a diagnostic code or two when they fail.
You could learn a whole lot about what's going on if you had access to a scan tool with a datastream mode, and even more if you have one that can access the component parameters, specifically the real time individual cylinder misfire counts.
-Rod
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ROD you wear 100% right...Right on the money...Thanks God bless
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09-15-2010, 12:50 AM
