DPFE Sensor.....Wrong One

[Lifted95X]

I just recently found out that the DPFE sensor I recently purchased from my local parts store is wrong. They told me that there is only one listed for my truck...but when I tried to swap....I found that the electrial connection keyways were different. Other than that.....it looks exactly the same. I noticed that my OEM sensor has the letters -AA at the end and the Aftermarket has -BB. Has anyone else ever run into this. I really don't want to have to buy this from ford.....I'm afraid of what the price difference will be.

 

[sholzee]

Maybe I can help you out. Do you have the black plastic DPFE or cast housing, and what are any of the part numbers off the original unit

 

[Lifted95X]

The part number i got off the sensor was
F37E-9J460-AA and it is a cast housing. Thanks in advance for your help.

 

[sholzee]

I am more familar with the plastic units. I thought all the connectors were the same, make sure a pin in not bent preventing the connector from going on, or is it obviously different. I do have 2 metal housing units(not functional or I would send it to you) that have the same connector one is -AA and one -BB.

The was at one time a different voltage from the units one went from .55 to 4.66 vdc early model, and the other 1 to 4.95 vdc. Maybe that is the difference in connectors? try the aftermarket place and look up a year previous to 95 also try a ranger or different vehicle make.

Hang on I beleive I see the difference now. Do you have a rubber seal inside the connector on the dpfe unit, and a tab on the connector shroud at 12, 3, and 6 o'clock position? that is the earlier model. The newer model has the seal on the wiring harness connector and two tabs on the shroud at the 3 o'clock position and on tab near the nine o'clock postion.

 

[Lifted95X]

YES... I have the earlier model you are describing.

 

[sholzee]

Try look up a sensor for a vehicle in the early 90's. I think rangers had them before explorer's. A 1995 maybe the year they changed the connector and your vehicle is caught in the middle. My 1992 explorer does not have the dpfe. If I find out more I will let you know.

 

[tallimeca]

dpfe sensor?

what is the dpfe sensor?

 

[sholzee]

It is used as an emission control device. It measures the exhaust pressure and you can determine flow from the pressure measurement. There is a Ford document that gives an excellent description but I am not sure how to post it if I scan it in. It would be a good document to have in the tech section.

 

[HenriS]

DPFE/ Oxygen sensors

Hi out there. Seems some of you guys may be able to help. Are you discussion the sensors that bolt into the exhaust pipe just before the main silencer?
My problem stems from the emission warning light (small orange engine) on the instrument binnacle coming on. Shortly after that (within say 15 minutes up to a couple of days) the transmission starts hunting 1st to 2nd and 4th to 5th only under load. The Agents found errors in the computer relating to the transmission, and once clearing the codes, the transmission is fine for a couple thousand miles, then the light comes on again, and the tranny starts again too. The Agents say the sensors need replacing. I have tried cleaning them but to no vail. To obtain the correct ones are also a problem as those supplied by the Agents have about a 9 inch length of flex wire whereas the ones on my Explorer are at least 2,5 feet long. they are now importing hopefully the correct ones but I would hate to replace and that was never the problem!
Can U help?
Thank You

 

[Lifted95X]

The DPFE bolts on to your intake...has two bolts holding it on..has one electrical connection..and two vacuum lines. I do not believe this is the same thing you are talking about.

 

[HenriS]

Thanks for the help with identification. Anyone experienced my problem? I would appreciate any help. I believe it could be the fuel quality causing this?

 

[sholzee]

Sounds like the sensor you are describing are the oxygen sensors. They measure O2 in the exhaust system to help determine the proper air fuel mixture. They kinda look like a spark plug and screw into the exhaust pipe and have wires coming out the other end.

 

[HenriS]

Yes, thats them. One on each pipe just after the two "heat box" silencers. Do these fellas give any problems? If so, how often? As said, indicated by an orange warning light that looks like an engine. This eventually starts affecting the auto transmission by hunting 4th,5th under light load.

 

[Robert]

Yes, they can cause problems severe enough to cause your check engine light to come on. However so can 200 other things. The only way to know which is causing the light is to have the codes read. You could get the codes read which might point you to which $60 O2 sensor is bad or you could replace all four for $240 and hope that was what casued the light. If the light turns out to be something different altogether then you will just keep wasting your money and time until you find the cause of the light. A badly running engine can cause the transmission to act strangely.

 

[kps36]

SSIKORA, you have the same year/model as I. In am curious about sumpin. Before you replaced the DPFE, did you read the codes ? I am getting (still) a 33 (EGR not functioning properly) and a 32 (DPFE not functioning properly). If so, did you clear codes successfully post-R&R ? What was the price range and any aftermarket (non Ford-only) availablity of the DPFE.
Thnx.

 

[Lifted95X]

I believe my code was pointing to " DPFE out of range" I picked up the aftermarket one from a local parts store....off the shelf...for around $55. Not too bad.


oh...and while I'm at it....How do you like your Borla Cat-Back?? It your X really loud now??Performance??

Thanks in advance

 

[kps36]

Thanx. I got the Borla last year thru the FordRacing 'special' clearance for $165. That was an offer I could not pass up. It is not really loud (I like it), but it sounds kinda like a Stock Mustang GT 5.0. That's about the best description. I have just finished a full tune up (except for the DPFE) and the acceleration (throttle response) is improved. It is still a truck and with 82K on the odo is an excellent runner and performer and no major problems (yet), but I am not going to out run most people.
The Borla lets you 'cruise' with a rather intimidating growl. I like it.

 

[kps36]

Hey yours is 'meduim willow green' also. My son and I (mostly him) just rubbed it out (post driver door replacement and put a coat of wax on it. Man it looks good !.
3M pro rubbing compound
Mothers Carnuba wax.
Lots o ArmorAll

 

[HenriS]

Hi Robert,
Thanks for the reply. Yes, the codes do read Ox sensors after the error codes of the Transmission are cleared. The local agent has 2 (my Explorer only has 2) on order, and I hope they are the correct ones, They should, as they have used the VIN number. The ones I have seen from another dealer have a short lead from sensor to plug, about 9" whereas the ones on mine are about 1,5'.
Seems as if my Explorer was not imported by Ford South Africa so I do not know where it came from! It is right hand drive, so could have come out of Australia or England!
Anyway, will let you know what happens.

 

[Robert]

Then you must have the OHV since it only uses two O2 sensors. My '97 SOHC has four. I believe (at least on mine) that the O2 sensor has a different length lead from the pre-cat sensor and the after-cat sensor. Each of yours might need to have a different length lead. You will find out when they remove them. Let us know. Thanks.