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dirtmod30
 Post subject: 99 E250 with 5.4 egr codes....
PostPosted: Tue Sep 23, 2008 4:28 pm 
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P1401, P0401 and 402, I ve checked everything and can't figure these out... any help?

Thanks..
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 Post subject: 99 E250 with 5.4 egr codes.... 
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asecmt
 Post subject: Re: 99 E250 with 5.4 egr codes....
PostPosted: Tue Sep 23, 2008 8:25 pm 
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Location: Atlanta GA
sounds like the dpfe sensor is no good and the ports are restricted. what have you done to correct?
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dirtmod30
 Post subject: Re: 99 E250 with 5.4 egr codes....
PostPosted: Tue Sep 23, 2008 10:32 pm 
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the dpfe, egr and evr have been replaced at one time, not sure how long, would you suggest replacing the dpfe again?
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asecmt
 Post subject: Re: 99 E250 with 5.4 egr codes....
PostPosted: Thu Sep 25, 2008 10:34 am 
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depends on what it reads voltage wise.. sounds like the ports are restricted..open the egr valve at idle and see if the engine stalls or really nears stall...if it does not then you have to remove the throttle body adapter and clean out the passages.
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