On my 99 F150 5.4 V8. after doing diagnostics signs pointed to FPFE sensor. Changed sensor. Disconnected positive cable on battery, turned on headlite switch to discharged system. Turned switch off. Left battery disconnected for 10 minutes, reconnected, SES lite went away, after computer relearned system everything is A-OK!!!!!!!!!!! Thanks to all who post on forum.

 

Can anybody tell me the location of the dfpe sensore on a 99 Ranger 3.0,
and is this the same as a EGR P. sensore.

 

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BigA did you find it yet?
I haven't worked on a 3.0 in a while and I don't have a picture of it but I believe it's on the front of the intake manifold, next to the throttle body. If you follow the EGR pipe from the exhaust manifold up to the EGR valve you'll find 2 hoses coming off it. They go to the DPFE. It has the 2 hoses and 1 electrical connector.
Aftermarket suppliers might call it an EGR pressure sensor. If it was my truck I'd get the genuine Ford part though as it's been changed up a few times to an improved design.

 

Thank you for the info. I couldn't get anything from the local Ford Dealership
They wanted $168.00 to install the sensore. The ford part is $100.00 - I can get an after market sensore for $58.00 . Do you think I would go wrong if I got an after market sensore?

 

Personally I would go for a Ford sensor but an aftermarket one migth be ok. They are easy to replace.

 

Thanks Racerguy , What if the truck has been run for 5,000 to 10,000 miles with this sensor bad, will this do anything like plug up the EGR port or maybe make carbon buildup on the sparkplugs? I hope when I change it I'll get a few more miles per gallon, I'm trying to understand how this sensore works.

 

Running it with a bad sensor probably won't cause any problems but I don't think I've seen one go that long so I'm not positive.
Basically the sensor tells the PCM how much the EGR is flowing so it can compensate by adjusting the ignition timing and the air/fuel ratio to suit.

 

BigA,
If you read between the lines, Racerguy is leaning towards the Ford original part. This part is too important to risk a cheaper version. Yet, be ABSOLUTELY sure this is what your truck needs. I replaced my DPFE (Ford original part) and that wasn't what it needed afterall. My truck needed a good scraping out of the carbon buildup in the EGR as well as the mini port holes for the exhaust. There's a thread that explains how to get to the EGR, how to scrap it out clean, followup with a compressor to blow all the loose carbon and gunk out of those small cavities, and away you go. If you have 100,000 miles on your truck, clean out the carbon buildup first because from where I'm sitting I know you have carbon plugging those ports and the all important EGR is plugged as well. Even if your truck shows a code that leans towards the DPFE, clean the carbon first, clear the code then see if it comes back again. We all have carbon buildup!! No one's an exception with these combusion engines. Buy a couple gaskets if you decide to remove the EGR and the air intake. The gaskets may run you 6 dollars total...that you can buy aftermarket...but stick with Ford sensors that are critical.
I bought a VSS (Variable Speed Sensor) mounted in the differential (model yr 1994) from NAPA, and from day 1 it was defective. Returned it, and spent 5 dollars more for the original Ford part. We live and we learn. Good luck with your decision.
Phil

 

I have a 98 Ford Expedition with the 5.4L, I have gotten code P0401, insufficient flow to the EGR valve, I changed the DPFE sensor and it fixed the problem.. Seldom does changing the EGR valve ever fix those kind of problems. OBTW the valve can be gotten at Auto Zone for about $50, but I have gone through one of their's in the past year. Try to get OEM parts like at www.worldpartsexpress.com. Also you might want to change all 90 degree vacuum hose connections, especially the one on top, and two at the PCV valve depending on year etc., and especially the one behind the throttle body,OBTW it is hard to get to, they are very thin and crack easily.

 

If you have a p0401, you should first verify that the egr system is fuctioning mechanically. On your evr solinoid there is a red wire (12V), and a brown wire (grounded by pcm), verify that you have 12V by back probing connector with test light and connecting the other end to ground. Then if you have power to that ground the brown, simulating the pcm grounding it,if the engine boggs down then you verify power and ground, vacuum is continuous throughout the system, the egr valve is good, and the port are clean, then you know it's the dpfe sensor, 99% of the time , wiring or pcm. If the egr system does not operate pull the vacuum hoses off of the evr and check for vacuum at the solinoid and then check for vacuum when you have it gounded out,(brown wire). If it has vacuum passing through it check for vacuum at the valve. If that checks good, then pull a vacuum on the valve and verify that the valve holds vacuum, if it does then the egr ports are clogged and need to be cleaned, while you have it off check to make sure the egr valve itself is clear. Remember on 96 and newer obdII vehicles if you MIL is on it WILLNOT pass emissions.

-Ryan

 

Well, after the P0401 code came back on my 4.6L F-150 and after checking the hoses, EGR valve. vacuum, and throttle body. I replaced the Autozone DPFE with the original one. (I had saved it since it was not the problem in the first place (15K miles ago, a clogged throttle body was the problem). So 250 miles later the "replace engine soon" light is still off. If this holds true into next week I will purchase NO MORE CRITICAL parts from Autozone.
Thanks to everyone for the help and maybe this will cure my problem! What a pain to replace "new parts"!

Richard

 

Oh yeah and always use ford parts, or it can get real confusing.

-Ryan

 

Hey it's me BigA - I got time today to clean out the EGR ports of all the carbon. It didn't have alot but some, the CE light came back on after driving it for about 15 minutes. So the next step is a (DPFE) sensore I guess. Any other tips you have would be great. Thank you and all the people who give input to my problem.

 

Hello BigA,

I hope I haven't responded too late for your request of addtl. information. Not only will you want to clean out the ports of the EGR, but you should also remove the (don't know the name of it maybe it's called the throttlbe body?); it have four bolts that hold it down to the top of the motor. I say it also looks like a gooseneck. For sure, it's the metal part that the EGR gets bolted to. Remember, the EGR has port holes that lead to the gooseneck that has a continuation of those same port holes. So cleaning only the EGR is not enough, you need to go further and scrape out the remaining port holes in the gooseneck throttle body since both parts has portholes that lead to one another! DONT FORGET TO BLOW OUT THE PORT HOLES WITH COMPRESSED AIR. Otherwise you'll allow some fragments and crud to remain inside. Replace everything and don't forget to use new gaskets from Ford. Don't waste your money on a DPFE ($100 Ford only) until this operation is completed first. Clear out the trouble code that may have shown.