This is my first post and I was wondering if you folks could help out with a very odd problem. I have a 2001 F150, with a 4.6, that is bucking, jerking, the works. I changed plugs, didn't help. I changed the fuel filter, didn't help. I ran a diagnostic and got code P0401. With the help of this forum I learned that this usually means the EGR valve or the DPFE sensor. I went to O'Reilly's and bought both. I swapped out the EGR and then went to replace the DPFE and couldn't find it. I got out my Chilton and Haynes books to find out where the DPFE was located. I downloaded photos of the location from the Net and even found the brackets that hold it in place...but there is NO DPFE on my truck???? Did Ford ever make a 4.6 with no DPFE? By the way, just replacing the EGR valve was no help at all. Any suggestions?

 

I'm not sure,but the only engines that don't have a dpfe sensor is the an engine that has an electric egr valve.(stepper motor egr)
The egr that you put in did it have electrical connections instead of vacuum lines?

Rich

 

No, it has the one large opening on the back...with a line that screws into it. It also has the small line on the top that just slips onto the nipple.

 

Have you checked the plug wires ? My 4.6 ran like cr#p--plug wires were bad. Just a thought.

 

I found the missing DPFE...sort of. Even though the 4.6 has brackets for it and all the books call for it, it doesn't go. Apparently Ford changed over to a smaller, plastic, elctric version mid-year in 2001. So even though the vacuum version is called for, and actually fits the truck, it's the wrong one.

77F250Diesel, thanks for the advice! A friend of mine suggested the same thing yesterday. I remembered several months getting a code of "cylinder 7 misfire", but it only showed that once. Just for kicks, I replaced the coil on the #7 plug and problem solved!

Thanks everybody for the advice!

 

Just went through the search for it too. Called a buddy that works at a dealership and found out the the sensor is a little black box (by the way I have a 2002 f150 supercrew 4.6l) that is connected to the metal hose that runs from the EGR to the manifold about halfway down. It has 2 hoses off of it and 1 electical connector. About $30.00 for the part. My Haynes manual showed the other 1 that is mentioned in the previos posts. By the way I had code P0405. Hope this fixes it!!

 

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