EGR tube CEL P0401

[Victor V01]

I removed my EGR tube coming from the valve going to the exhaust. I cleaned it out the best i could. There is a restriction just below where the DPFE pipes connect, is this supposed to be there? I noticed a crimp in the same area, looks like a slight pinch. I fed a wire down the tube, and it stopped at the pinched area, it sounded metalic, so I didn't force it. Whats the best way to clean tube? Is there any way to clean EGR valve? Thanks for you help.





Victor

 

[Torrie McPhail]

P0401 EXHAUST GAS RECIRCULATION A (EGR) FLOW INSUFFICIENT DETECTED









Take care,

Mr. Torrie R. McPhail - (Owner)

http://www.FastPartsNetwork.com

http://www.UnleashedTuning.com

Ford/GM/Dodge/Chrysler/Jeep SCT Custom Calibrator

 

[TRACket Paul]

You might try using a metal coat hanger.

 

[Victor V01]

Thats what I used to try to find restriction. Until it hit the pinched area. Not much came out.

 

[Roger Batts]

It could also be the EGR valve itself, the DPFE sensor, or the EGR regulator acting up. It could even be a leak in the hoses to the DPFE or a pinhole in the tube. In the extreme, it could also be as bad as a processor taking a dump, but not likely.

 

[Fudged Undies]

Historically in the '01/'02's P0401 has been the DPFE sensor. Torrie has it for about 45 bucks on his site (see secont post on this thread). There was also a recall on this part way back when. Have you ever had it replaced? If not I would start there.

 

[scott degroot]

The restriction is supposed to be there. COme to think of it I don't think that I have ever seen a plugged tube. If there is a restriction I have always seen it on the intake side, never on the exhaust side. Like everyone else says more than likely a bad DPFE sensor. This can easily be diagnosed in about 10 seconds using a scanner.

 

[Victor V01]

I recently replaced the DPFE sensor. The CEL llight stayed off for about a month. Now its on again. I bought it at auto zone. Are they known to be faulty?I also replaced the hoses going out of DPFE into exhaust.

 

[Fudged Undies]

Didn't know AZ sold the DPFE, this used to be a dealer only part since there was a recall on it. I suggest trying to take it back to AZ and trying a new one.



There may be some addtional causes: Try some stuff <a href="http://www.mysporttrac.com/shared/msgboard9e.asp?MsgID=&SITENAME=mysporttrac&BOARDNAME=MSG&SEARCH=P0401&SEARCHCATEGORY=0&SEARCHTYPE=0&SEARCHTITLE=1&SEARCHMESSAGE=1&SEARCHWHEN=730&BUTTON=SEARCH&SEARCHDESC="target=top>listed here</a>.