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Join Date: Aug 2011
Location: Las Vegas
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I would check the egr valve. Mine was doing the exact same thing. It didn't throw a code at first then the next day it threw a p0404. I would pull the egr valve and clean it. For what its worth.. Mine had 43500 miles and it ended up being a blown EGR Cooler causing the EGR valve to gum up. It looked like a friggen death train coming down the road with all the white smoke!
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2005 F250 XLT 4x4 6.0L
4" Lift, 315 Tires, Edge Insight CS w/ fuel pressure and EGT, Gearhead SRL+, Blue Spring, Sinister Coolant Filter, door seal mod, Hybrid Audio Imagines, JL 13TW5, JL 900/5, Dynamat, ect...ect..
Sinister (bulletproof style) EGR Cooler, Updated Ford Oil Cooler, ARP Studs, Updated EGR Valve, HPOP, and IPR by Underground Diesel Performance
Last edited by Guy_K; 01-04-2012 at 06:43 PM.