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Thanks for the pics I found the DPFE, it looks like it was replaced by the previous owner. Same goes for that hose that connects to the PCV valve, it looks like it was replaced as well. I may have found the solution, I cleaned the IAC the rough idle was still there. Then I cleaned the throttle...

I cleaned the MAF. Check the elbow again at the PCV valve and the other end. I could not find the DPFE. The truck is still idling rough, but no CEL light it has been a couple of days. I did notice when I shut the car off there is a sound like air is escaping, kinda like opening a bottle of...

I think you are talking about the DPFE Valve. I will check that out as well. Got a lot to do now when I get home.

SyberTiger I actually spent over an hour reading through that post Saturday night hoping that is what it was. When I checked it Sunday morning it looked fine, but I plan on replacing it anyway and save a headache down the road.

Oh yea, the guy at the shop was not sure where bank 2 was and he changed the cat on bank 1. I went back to him cause it did not make sense to me, he check the manual and gave me a free cat on bank two. Two cats for the price of 1. :D

Thanks for the response. I know there was a misfire for sure, when I changed the plugs I reversed the cables for 5 and 6 and drove about 15 miles to a friends shop on it that way. I corrected that and changed the plugs for 5 and 6 as well. One thing I noticed yesterday, when I unplug the MAF...

I have an 02 XLT, after changing the plugs, wires and air filter I started getting this code. I have already changed the cat on bank 2 and the rear O2 sensor as well. I cleared the code and it has not come back yet but the CEL will stay off for a day or two. Hopefully that does take care of the...