Alright folks I have a 2000 Excursion with the V10 180k miles and about a month ago I was getting a check engine light. Took out my scanner and read the code which came back to P1401. Doing some research I came back to the culprit being DPFE and while I replaced it things seemed okay. Fast forward a month or so to yesterday check engine light came back. Ran code and pop back same code.

Now before I dived back into sourcing the code issue I pulled the DPFE and attached are the photos of what shows burned out circuit board and water intrusion.

Those that don't know water really should have never gotten into this part but it is also not sealed on backside removable cover so maybe. I'm thinking I got more issue than that.

Also back trac​​​​​​k the original DPFE where the two hoses connect to from the EGR pipe coming off drivers side manifold were melted and damaged. So not thinking that something obviously caused the melt I just replaced part and now this.

That occurred when my wife drive truck up from California to Washington. Now I don't see any issues with how the truck runs but doing some reading if the EGR is not working it could cause mpg inconsistencies. Not sure how accurate that is and I have not calculated.

Any thoughts​​​​​​ on this?

 

I had to google to find it..

Differential
Pressure
Feedback
Senser

 

[QUOTE=Misky6.0;16833594]I had to google to find it..

Differential
Pressure
Feedback


https://www.ford-trucks.com/forums/342419-how-to-test-your-dpfe-sensor.html
So I see no responses but has anyone ever experienced anything like this?

I live in a state where Emissions isn't a issue so would it just be better to eliminate stock manifolds and run headers with Y pipe. Then if doing so how would I remove engine light or just having a tuner will do this? This is all associated with EGR so assuming just like on my 6.0 it's useless to the average person but serves a purpose for emissions regulations. In my eyes though its a complete waste and just more problems then good.

Anyon else remove these parts or bypass them?

I'm also curious how the previous DPFE melted and now the new one is burned out obviously due to water intrusion.

 

Did I come across a issue no one has ever had??? That would surprise me or you folks just don't care to help much lol.

Today I pulled this code P0720 as well. Since I put DPFE back on drying out water cleared codes in have not gotten code or check engine light back in almost 30 miles.

Waiting for it I know it's coming back so that's why I'm asking for help on this. Don't want to toss another DPFE back on it but rather instead find solution to problem. Has anyone ever removed egr to find it gummed up and cleaned it? Has anyone bypassed it? My truvk has the ram style y pipe so I'm looking to get rid of that soon. Not to mention headers but if I do the egr would be disconnected???

 

I don't have an EGR on mine. I think maybe the first thing to do is prevent water from getting onto it.

 

I wouldn't be in a rush to get rid of the ramhorn pipe unless going headers thst come with a new y-pipe. I had the Ramhorn style with a 4" MBRP catback later adding the SPD y-pipe and should have left it alone. Sounded and felt more torquey, now the Engine just revs to the moon.

 

I'm in no hurry and actually I don't think I can remove it because removing EGR might impact emissions. Today I had to convert everything from California title to Washington and not a happy camper. Glad it's done but between emissions check $15 not so bad and all new registration, taxes, license fees, title transfer and process I dumped $300 at this pig today. Yep and my wife hates on my F350 all the time when I have to spend $25 on it but then I go and do front brakes on her Excursion this weekend and now this and do you see me complaining? Well okay on FTE maybe but damn that hurts. Oh well it needed to be done.

So long story short now that I know this glorious state Washington still does require emissions I don't think I'll tinker with it.

On a good note cel has not come back since I cleared water intrusion on the CODE so maybe I finally fixed it.

Oh and this tax return right around the corner her Excursion is getting a entire front end rebuild, Brand new rubber all around and alignment. Good piece of mind as I'll be deployed soon I don't need family truck left stranded, broken down or my wife and kids in a accident. Damn that is going to hurt more on bank account .

 

So Bently what your saying is 4" mbrp exhaust system but leave ramstyle y pipe is probably about all you should have done?

 

I get nervous just leaving my wife and kids alone for several days, i can't imagine what its like to know you'll be away for much longer. I read thru your post and have some suggestions for eliminating this issue from recurring.

Even though you now know you're stuck in a state with emmisions testing you've abandoned the header idea (good for a number of reasons), and i assume have decided against removing your egr. it seems like a fair amount of people throughout the country that are diy'ers are doing this for various reasons. its just a bad idea. the egr system is really not something that hurts performance which is the most common reason for removing it. it really cuts down on the worst type of emissions and is an important part in a computer controlled vehicle unless a custom tune is added to ensure optimal fuel to air ratio.

Your truck has a lot of miles and you mention the egr was dirty/clogged. With it unable to feed hot gasses back into the intake, the hot gasses led to the melting of the hoses on your dpfe and possibly led to its burning out. Replace the egr. a motorcraft egr at rock auto is only $70 and you can find plenty of sites offering 5% discounts (every little bit counts). When the PCM senses a malfunction via the dpfe, it will likely lean out the fuel mixture which you may not notice, but lean mixtures can lead to excess combustion chamber heat, pinging (which when detected by the pcm will retard timing and further hurt fuel economy, and other related issues. Replacing the EGR and possibly the dpfe again, will just add to your peace of mind. It costs a lot less than a breakdown, which is multiplied with you deployed and your wife having to bring it to a repair shop, that my not even fix it right. While there truly are some very intelligent and knowledgeable mechanics, there are also plenty of not so great mechanics that out number them in most shops. i've run stores for a major repair chain and after visiting 100's more while in automotive wholesale positions it is widespread.

There are several possible reasons why your dpfe had water in it. Your vehicle has lots of miles and years on it, and that can affect rubber seals. There is a cowl seal on most vehicles and Iam assuming on your Excursion. It attaches to the cowl and seals against the bottom of the back of the hood, when the hood is closed. if it is damaged, cracked, missing water can run down in between the cowl and hood and down the firewall which is where i am assuming your dpfe is. Replace the seal if needed, but if not and if the dpfe is on the firewall, at least run a bead of rtv across the top edge so water will go over or around the sensor.

Second possibility is condensation from the excess heat in the hoses and pipes from the bad egr and when the truck cools down, condensation occurs. This will be eliminated by fixing the egr.

You could also run some dielectric grease between the back cover and the sensor, but i would only run it around the top half (determined by the position in which it is installed), as Iam not sure if completely sealing it would affect its aibility to sense the pressure differential and it also might be vented to dissipate heat.

​​​​​​​Good luck getting this taken care of.

 

Hey thanks the thought of my wife and kids home that long without me while on deployment is never easy and never gets easier. I'm fact I think it only gets harder. However after 13 years of being home and away it's just something we do.

Back to the truck, I appreciate your help, I will consider removing EGR and replacing with brand new one. I did read that a EGR clogged or not operating properly could lead to mpg loss which I think is likely. The DPFE sensor is actually located off the firewall so no real chance of water getting in from cowl but I do believe your thought of it getting in there because of exhaust gasses not getting out causing condensation is more likely the cause. My first DPFE did melt the new one which is on now is the one with water in it.

Check engine light did come back for the same thing again.

I will replace EGR and report back soon.

I'm also gonna clean the MAF it seems like it could have a little loss in power and even my wife noticed it.

 

Wouldn't this receive a little more Hits/Response in the V10 forum?

Just rambling out loud here, but...

 

Likely true so if the mods want to move this for me that would be great!

 

Exactly.

FWIW 5star can write a tune without EGR for emissions. I am coming up on this dilemma, ordered headers and can't swap with the EGR provisioned headers.

Haven't had any EGR issues, sorry can't help more.

 

So if i order headers without egr and y pipe, etc. 5star can do a tune that keeps egr code from showing up? Luckily in Washington they shove probe up the Ex *** end and passed no problem. They didn't check dash or any check engine lights but i had reset codes before I got it checked.

Today I sprayed down my MAF sensor with cleaner and made a big difference in power. I mean wasnt a super charger install lol but no more sluggish starts and throttle seemed very responsive.

Little by little this truck is getting the attention she deserves. Was on back burner because I'm always playing with my 6.0!

 

Thorley has Header's for with or without EGR, I would just order the correct ones for your truck. But yes 5star will write a tune for us.

Last night I started a thread trying to figure out how to delete the EGR and possibly the DPFE at the same time.