In this video I bring you along as I have a look at a customers 1994 Ford Ranger Splash with the big 4.0 V-6 4x4. This is an older OBDI vehicle that I previously diagnosed (code 327) as having a failed DPFE sensor (Differential Pressure Feedback Electronic) This sensor is the main player in the EGR system that reports back to the PCM letting it know that the EGR is open and working.
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All right folks working on the 1994 Ford Ranger Splash when's the last time you saw one of these in New York Let's take that. Uh, we never see these things. 1994 I'm talking old school aldl under the hood. had to pull codes guys.

Money lights on the DPFE sensor here, believe it or not, is broke. It's stuck at 4.8 volts. We got a new one coming uh or one last night and I noticed his connector here is also busted. So I called down to the Advance Auto I'm not a sponsor.

they got us a connector I could get it from Napper but they were like six times the cost. Uh, so we got one here from the advance. Make sure it's going to be the right one. Yes sir, it is.

We don't want to put it on and break it the first try. Uh, so we'll wait for the new one to show up here from Napa While we're doing that, we're gonna put uh, put this little guy on I Don't imagine the wire colors are the same just looking at it here and they are not, so we have to be careful of that. Usually connectors or pigtails come and they're just generic. You know, all white.

They're all black wires. They're all orange wires. So we're going to take and just open up the loom here. Split this little guy back a little tape off it.

let me zip tied it up here back on the holder. We'll give ourselves some more room. We'll just cut that zip tie there and we'll cut this one here this way we can do what we have to do. That should give us enough room.

I Don't know if they're if the connectors are built the same in the sense that you could just depend it pin them over, but we'll play it safe and not mess with pin tension. Just cut it and uh, butt, connect it on there and Shrink her down. We'll do it one wire at a time because colors don't match. It does have a locator tab.

You can just line up and leave the wire a little bit long. We'll come through here and just chop it off. There's that one. Grab the stripper stripper back.

so I already crimped it onto the connector here like that. What was everybody coming in especially on? Friday I tried to make it all fit together here for us. Come on that. There we go.

Grab our middle wire here. you can stagger them a little bit. the uh, tape and wire loom there if you will like that. I'm sure you guys it seemed other guys put on butt connectors.

no real big stroke. Gene that's going on here. All right there it is. Now once you get that done, you're going to want to shrink them down.

Be careful if you got a battery that's being all over it before you crack open an open flame here and we'll just shrink these down. These are not just regular butt connectors. I do get assets sometimes. these are special.

You know, heat shrink butt connectors and make sure if you're buying them, make sure you buy the ones that have the adhesive in them. Also, as they shrink down, the the goo comes out. These work really, really well providing you crimp them correctly. If you use the wrong side of your crimper, say the non-insulated side of your crimper to crimp them down.
you poke a little hole on it as soon as you put heat on it. they just split right open. So make sure you're using the insulated side of your crimper to crimp that's a smooth part of your crimper there. Now they're all shrunk down and then we wait.

So that's part number and that is for the D shape. D Like Delta they make an oval shape and a d-shaped connector and it's not the inside of the connector. it's the outside connector. This one is d-shaped on this vehicle.

So when you're looking them up, that's the part number for the D1 Where's my parts? My DPFE sensor and hoses? Man, you know Advanced Auto Was here 45 minutes ago. happy and smiling. Are you kidding me? I Just caught a nap or the grass them to find out where my parts are because it's 8.45 and all my other deliveries have been here already and he says he doesn't have any parts for me. Hello! Sharon Yeah! I Tried myself until it's Friday's starting out but you know whose fault it is? Not sure.

No, it's mine. I ordered it from the wrong Napa you know what I mean oh maybe 10, 30, 11 o'clock He said he's a good guy, short and one guy doesn't feel good and another guy is in a safe place and blah blah blah all that stuff. So we're gonna take this up here folks. So when I look up stuff on our Napa system if I look I can look at a bunch of different stores and it doesn't default back to my my OG my my people, my locals and if I accidentally order something from the wrong store I don't notice it right away until 8 45 the next morning when I'm screaming at the other store to find out where my parts are and so there's nothing we can do about it.

You can wait. We can wait. I Just wanted to bang this one out. Cars are overflowing in the parking lot and it's all I wanted to get it out of here out of my life.

Have a sense of accomplishment first thing in the morning. It kind of sets the pace for the rest of the day, but you see where this pace is being set now don't you? You can check with the next one so we'll just set that there gingerly. I Ordered the two new hoses the new Dpfu I don't know what that stands for Delta Pressure exhaust feedback Center I Think something like that sounds good? Sounds good. Whatever.

Standby: All right. Napa Finally showed up. so we're gonna hook the hoses there 5.5 mm Now this one has probably been changed before. The OG pressure differential sensors were typically made out of aluminum on these vehicles and they would corrode disappear.

They came out with plastic ones and they were a little better. You see a ton of these back in the day. Yeah, so this one's been changed. It's a SMP standard Motor Products and it's gone bad.

That one is stuck at 4.88 volts is where it was at. We're gonna get these hoses off. These hoses are usually crispy and typically people change these hoses with the wrong type of hose. So I Always always say I always do.
Yeah, these are just regular fuel line from 2018. Non-silicone just your average run-of-the-mill gas line. This is probably just vacuum tubing here. Get this one up man.

Anyhow, change your hoses. Look at our new sensor here. This is a snap. Acklin Uh, it has the rubber weather pack connector inside of this because oddly enough, it doesn't come with the connector.

I'm not sure what's up with that, but that's just how they go. Stick this baby back on. Yeah, 4.88 volts. I Don't remember the voltage key on engine off on these.

Well, that side slotted I Guess I could have put that one in first. Uh, I do know it's not 4.88 How do I know what was wrong with it? Well I busted out the old OBD1 Ford tool did the key on engine off demand codes and we just had the code I don't know what it was though. 371 I don't remember what the exactly it was. Um, but yeah DPFE High Then I went to the data list and so I was at 4.88 Um, and that's that's all I can tell you we'll get our new hoses.

Here's the part number for that DPFE with the d-shaped connector and then here is your part number on the hoses. Can need a pack of those. They come with a two pack. They are silicone.

They can take the heat. but if you're changing a DPFE on your Ford you find that sucker is melted and those hoses are crispy. Fix the real problem and the real problem is going to be your plugged exhaust. I Always love this now.

Ford From back in the day for checking for plugged exhaust because you never had to unhook anything. Well you can unhook one of these hoses and install your back pressure gauge and that's it with a piece of cake. see here here. Chopper off a little longer than we think, too long but sure to laugh another half inch off that thing.

Let's be on the safe side. Plug it up. That one's good. this one we got it kind of loopy around here.

I'm gonna get this one exact ly Chop It Off Yeah, if you're using just regular fuel line and vacuum hose on these, it doesn't last. It'll work temporarily. like if you got to wait to get the correct hose for your customer, but certainly don't leave it on. It usually gets all hard and crispy.

Uh, that's it. Let's take and plug it in. I call that plugged in. Let me get the uh, let me get that rubber out of there.

We'll put that on the connector first. We're dealing with the aftermarket sensor, aftermarket connector Mother Lover. Just when you think you're doing a good job, we're gonna get some silicone grease. We're gonna lubricate the outside of it here.

Maybe it's a lubrication issue, we're gonna Lube up the outside of the seal. dielectric silicone grease. We don't need to do like down in the terminals or anything, we just want to get it on there and see if it helps. Oh I think it's all we needed was a little Lube Oh I See Okay, so it does go on all the way and latch over, but it's a Ford style latch in.
The way this is designed is when you pull on it because these retainers are ramped on both sides. if that makes sense. It pushes it up to let the retainer over and then when you pull back it just pops it back off. Okay, so we're good.

I Guess looks like it's working this design. A little bit of lube, make sure we hit bottom and then the most important part is we need to make sure that it works. and I don't really feel like hooking up a scan tool so we're just going to plug into it and if it works, we're going to clear The Code by unhooking the battery because she's old school. We don't have a wiring diagram, but we don't need it or we shouldn't.

What we'll be looking for is one of these wires will be a ground. One will be 5 volts and one of them will be our signal. We'll find out who's who and uh, we have an EGR but where is EGR valve? Oh, she's right back here. We can open that up and we should see.

our voltage change is the pressure differential across those two hoses change? So let me get our little scope here set up. So I got our scope set up here. We're on one volt per division, 500 milliseconds per division. We're gonna find out who's who.

that is our Center and ground. We're just going to very gingerly. Mac Probe here. All right.

So our bottom wire is our 5 volt. Our middle wire must be the ground and our top wire here is at Point. Let me find out what the voltage is 0.69 So that must be our signal wire. so we're going to stay tapped right into that signal wire.

we're going to fire it up. I'm gonna get a little vacuum line here. We're going to open the EGR valve. Let me just unplug the EGR valve right now.

I'm just taking the vacuum line off it. I'm gonna get a little one. We'll start it. We'll just give that a little suck and we should watch our voltage go up.

See if we can't use this little piece that we had left over from the DPS hose here. It'll probably want to stall some. You know, if the EGR valve works, it's just sounds like it does. All right? Great.

Let's fire it up. We'll see if that'll stay. It may or may not. We're gonna try to open the valve not working.

The valve's fully open right there. How's that closed? foreign and that is that. Uh, what? two point two point eight volt is a match voltage on that and then Kion engine running goes down to your 0.06 Niner volts there. So D higher, 0.0.088 I Guess that's it.

You know it works. I'll shut it off and at this point I I Doubt the engine light is out on its own. We can go take a look down here in the corner. You just let it run for about 20-30 seconds.

It would pop bad a long time since. I work on an OBD1 Ford Check this thing out man. She Cherry Dash ain't cracked or nothing and only 61 000 miles on there. Yeah, apparently we're good I don't even have to clear it.
Light doesn't even pop on now. Yeah, usually just sit here as soon as it come down to an idle. Light would pop right down. so I sweet.

Don't forget to hook your EGR valve back up otherwise you'll get a cold when you're driving. Uh, so that's it. Super duper common problem man. these older Fords used to do so many of those suckers.

Um, but bringing back some memories. Not really. I Don't miss working on these. These four leaves were a freaking mess to work on.

Okay, that's it folks. Hope you enjoyed it. There you have it folks. Ford Ranger 4-0 DPF sensor and um, that's it.

They're pretty easy to do when you're doing them. Like I said, just make sure you buy the hoses and that's it and they're pretty easy to test and that should give you some idea of the voltage levels. Kion Engine off cannons running with the EGR open so I wasn't even sure what they were right off hand because I didn't look but I knew it wasn't 4.88 That's all I needed to know. The other thing I need to know is that you're going to go in that comment section.

You're going to leave a question in the comment and see the Facebook You guys know what to do while you're down there. so do it. I Just want to be I can do it. You Can Do it.

Thanks for watching foreign.

97 thoughts on “Ford ranger splash: failed dpfe sensor”
  1. Avataaar/Circle Created with python_avatars Greg Sidel says:

    Thank you eric

  2. Avataaar/Circle Created with python_avatars Alan North Carolina says:

    I’m gettin choked up too!

  3. Avataaar/Circle Created with python_avatars michael sorrentino says:

    great job

  4. Avataaar/Circle Created with python_avatars Gerry Goldsmith says:

    Your the man! Learned a lot from this channel thank u. One question? Why not de pin the connector and slide on the new clip?

  5. Avataaar/Circle Created with python_avatars andrew b says:

    100% ethanol available nationwide by 1997😂😂😂. Mine was never more than 1600 miles from ethanol station. (Washington DC). Ethanol sensor went out, and was $1100. Sold truck for $50.

  6. Avataaar/Circle Created with python_avatars Borg Simpson says:

    Awesome Old School
    Tutorial.. thanks Eric O

  7. Avataaar/Circle Created with python_avatars PlayscBricks says:

    I don't see your crimpers in the amazon store. I've been looking for a new pair and yours seem to be the most logical set up for cutting, stripping, crimping and grabbing.

  8. Avataaar/Circle Created with python_avatars Andy Gotting says:

    I wonder how many wouldn't change the hoses. Refreshing to see a guy at the too of his game showing us how it should be done. And explaining the function of the part which could well help with future troubleshooting.

  9. Avataaar/Circle Created with python_avatars Mr. Black says:

    My dang 2009 Explorer XLT 4×4 has the 4.0. I wish I had the 4.6 3v version instead. I dont too much care for the 4.0 . It sounds harsh at wide open throttle, terrible on gas and has that horrible jackshaft with all the timing chains it makes me nervous thinking about it.
    Is that 4.0 the OHV version ?

  10. Avataaar/Circle Created with python_avatars Iain Kinsella says:

    Ranger Danger….

  11. Avataaar/Circle Created with python_avatars Mark Chidester says:

    Had an 88 Ford Tempo
    They called, what I believe was the same thing, a PFE transducer

  12. Avataaar/Circle Created with python_avatars Tank_Ah_ Licious says:

    I am addicted to this channel..I watch Eric fix stuff for hours on end…this dude kicks ace

  13. Avataaar/Circle Created with python_avatars MrMoon275 says:

    Eric, I really laughed out loud when you said someone is in their safe space or something, right on.

  14. Avataaar/Circle Created with python_avatars Ross Fenneken says:

    A no A/C truck..back when it was a option!

  15. Avataaar/Circle Created with python_avatars Pro Diesel Repair says:

    What is it with NAPA having the same parts listed at 4 times the cost?

  16. Avataaar/Circle Created with python_avatars Adam Trombino says:

    I recall 1 of the Ford dealers telling us in the late 90s early 00s that if we ever see an engine with the aluminum DPFE on it, to change it to the plastic style, cuz even if it ain't broke, it will do so shortly. LOL I couldn't believe that I remembered that KOEO the volts would be around .6, yet on some days I can't remember my name..

  17. Avataaar/Circle Created with python_avatars Larry Fry says:

    You said those 4 cylinder Ford engines were a pain to work on. This begs the question: what is the easiest engine to work on??

  18. Avataaar/Circle Created with python_avatars Moe Horowitz World says:

    Well remember fact I've got a fender from a splash hanging off my barn .. the birds use it to nest

  19. Avataaar/Circle Created with python_avatars 05Mil Machine says:

    I have had a few of these years of Rangers, B2300/3000/4000 and Bronco II. Great trucks, but OBD1 still makes you work for the fix. Lol

  20. Avataaar/Circle Created with python_avatars Rich Helm says:

    i have just realised how much of my life i'm spending watching Eric O fix stuff! 😳🤣

  21. Avataaar/Circle Created with python_avatars Ray Bunton says:

    Great video man

  22. Avataaar/Circle Created with python_avatars anotoly tony says:

    Hi everyone any mechanics here can help me out, i have 2017 Chevrolet malibu 1.5 my radiator fan don't work, codes are p0480 and P0691 cooling fan 1 relay fault, took it to shop for diagnosis and this is the verdict: fan relay is in the ECM will need to see dealer for replacement and programming, but that does not make any sense, why would fan relay be inside of ECM.

  23. Avataaar/Circle Created with python_avatars Casey Nicholson says:

    Ford Ranger!

  24. Avataaar/Circle Created with python_avatars Glyn Watkins says:

    A man with patients of a saint

  25. Avataaar/Circle Created with python_avatars John Phillips says:

    Wow that brought back memories, haven't seen or worked on one of these in years

  26. Avataaar/Circle Created with python_avatars J. Mark Krzystofiak says:

    I think those side ear ford connectors were designed to break off. Sure acted like it anyway.

  27. Avataaar/Circle Created with python_avatars Cliff Scheckler says:

    It kind of sucks when you say 94 is old school. I would have thought 70,80 s be old school. 😀

  28. Avataaar/Circle Created with python_avatars Robert La Cob says:

    An oldie but goodie! NOT really, but I like this truck as I had an 1981 Super Cab, 4.0 Liter XLT 2wd. Great truck, lousy brakes.

  29. Avataaar/Circle Created with python_avatars Tête Dur says:

    I'm surprised that EGR valve actually worked. We used to have to test those for operation under California's SMOG test. Functional test, including stuff hooked up, as well as working, then performance (tailpipe) at idle and 2,000 rpm. I got out of the business right as they started installing dynos in garages.

  30. Avataaar/Circle Created with python_avatars abruptly blunt says:

    cool little scope, be nice to know at least a brand name…..

  31. Avataaar/Circle Created with python_avatars throttle bottle says:

    1994 "danger" ranger splash. lol
    on those one/many (small) lean-out backfires on hot restart or sticking EGR valve kills DPFE's near instantly(all ford of that ERA and then some!).
    culprits are often plugs/wires/coils, injectors, fuel pressure/regulator/bleed-off, tiny fuel line leaks(yuuup!), evap purge leaking/sticking, bad cannister, ethanol stacking and more.
    they had numerous "dealer flash" tuning updates back then in attempt to curb the issues.

  32. Avataaar/Circle Created with python_avatars Susan Henderson says:

    Wow, that was like a 35 year flash back to my fraud motor company days, OBD1 good times.

  33. Avataaar/Circle Created with python_avatars dgc940 says:

    Like you I make my living as a mecKanick for 34 years But I work all day on boats and pwc's Atv's etc. I cant believe I work all day every day then come home and then watch you work LOL

  34. Avataaar/Circle Created with python_avatars Walter Woods says:

    Favorite channel

  35. Avataaar/Circle Created with python_avatars William Sevier says:

    I still have an 87 Ranger XL long bed 4×2 with the 2.9L V6 and manual transmission….runs and drives great and only has 129k on it….other than the typical cracked plastic dash bezel, and the peeling clear coat, its in pretty good condition for as old as it is. Picked it up about 4 years ago for $800. A pretty nice bare bones work truck. For a while it was my only vehicle due to the newer ones being in the shop for various mechanical issues LOL…newer isn't always better, and old reliable was there and ready to work every day.

  36. Avataaar/Circle Created with python_avatars Daniel plays with rocks says:

    Why didn't you use a solder type of Buttsplice that has sealing goo on each end? I prefer to solder connections rather crimp. If I do crimp I back fill the crimp with solder.. That is a cool little Oscilloscope

  37. Avataaar/Circle Created with python_avatars Sarge Freedom says:

    Once again, makes it look easy

  38. Avataaar/Circle Created with python_avatars Arthur Domagala says:


  39. Avataaar/Circle Created with python_avatars Richard Foster says:

    Eric I need your advice, I'm working on a 09 dodge journey 3.5 V6 changing the timing belt. Is it super common for the rear camshaft timing marks to not line up after taking all the slack out of the belt. The crankshaft and front camshaft timing marks are spot on, but rear cam is tricky to line up. Please help

  40. Avataaar/Circle Created with python_avatars Fred Flintstone says:

    My original DPFE sensor on my 98 Ranger was plastic. The hoses were so hard that the ports on the valve broke off when I tried to remove them. Replaced it with a metal sensor and haven't had a problem since…

  41. Avataaar/Circle Created with python_avatars Paul Trusdell says:

    Is it ok to put dielectric grease on terminals? I personally haven't noticed any issues. What are your thoughts Eric? I also ordered the Astro Light from your store link, man that thing is great! Indispensable tool!