EGR Delete
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Junior User
Joined: Feb 2011
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EGR Delete
OK I want to install an EGR delete kit on my '04 F350, but my state does emissions testing and also looks for missing emissions componants. Can I do the delete and just leave the EGR valve mounted on the engine and unplug it for visual inspections or do I have to take it off and use the block off plate. Thanks guys
Lead Driver
Joined: Sep 2003
Posts: 5,241
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From: Other side of the sunrise
You actually SHOULD leave the EGR in place and plugged in. There has been discussion in prior postings, in particular from one of our FTE resident Master Ford Diesel Techs, Cheezit. He says that keeping the EGR plugged in seems to keep the cooling fan normally operating. Maybe do a search on this when you get a chance.
The delete comes with block off caps so there is no exhaust passing to the EGR valve. Basically, the valve will function, but no exhaust will pass as the passages are blocked off. I have my block off plate still sitting in the box. EGR is in place.
I don't know if an inspector would be able to view the EGR cooler (missing) on inspection. I think I have read that you can see that the cooler has been deleted if you know where to look, but I don't know this for sure. I suppose you could leave it in there and not have the coolant lines connected, so it could be viewed in place...
The delete comes with block off caps so there is no exhaust passing to the EGR valve. Basically, the valve will function, but no exhaust will pass as the passages are blocked off. I have my block off plate still sitting in the box. EGR is in place.
I don't know if an inspector would be able to view the EGR cooler (missing) on inspection. I think I have read that you can see that the cooler has been deleted if you know where to look, but I don't know this for sure. I suppose you could leave it in there and not have the coolant lines connected, so it could be viewed in place...
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Junior User
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I don't think they would look that carefully, they told me they mainly look for the cat and egr in place. That's good info, I also understand that unplugging the egr is supposed to give you slightly better mileage.
Lead Driver
Joined: Sep 2003
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From: Other side of the sunrise
On another note, some folks had to purchase an SCT tuner to turn off egr so that they wouldn't get the check engine light. But I think that was for 2005 and later. I think the 2004 can be unplugged without cel, but 2005 has to be turned off with tuner or you would get CEL for low exhaust flow in gas recirculation. I don't know if 2004 is missing that exhaust sensor, or what.
I also recall reading something about later computer flashes at dealerships causing CEL to catch disconnected EGRs, but that still might be for 05 and >, not sure.
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Junior User
Joined: Feb 2011
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I've also heard of updated computers catching anything disconnected, and that the '05's and above will throw a CEL code. I think I'll just try it and see what happens I'm not due for inspection until April, so I have a little bit of time to play around with it.
Hotshot
Joined: Apr 2010
Posts: 19,072
Likes: 242
From: Saratoga Springs,UT
If the egr cooler is removed its very easy to tell just by looking from the top of the moter
To be on the safe side you need awelded egr cooler it looks stock
or this one from BPD
http://www.bulletproofdiesel.com/Articles.asp?ID=277
To be on the safe side you need awelded egr cooler it looks stock
or this one from BPD
http://www.bulletproofdiesel.com/Articles.asp?ID=277
Senior User
Joined: Mar 2004
Posts: 209
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From: Innisfree, Alberta
You will pick up some mileage with the EGR off. I've unplugged mine. I'm still dealing with the CEL though. I plugged an old EGR valve into the harness but after a couple of days the light comes back on. The truck starts good and runs well though.
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Posting Guru
Joined: Aug 2010
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From: knox Tn
Mountie mine does not throw a CEL with it unplugged or with it plugged in i just get the 401 code that pops up . they say 03's don't get the cel
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Post Fiend
Joined: Oct 2005
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From: Plano TX and Brentwood TN
Thats like saying you will pick up mileage putting a tuner on your vehicle.
You might, but then again you might not. There are a lot of factors at go into MPG, some more influential then others.
To the OP: You mentioned that you did having testing, however, even if you go to a place that doesn't have testing you could still get caught and fined, your chances of that happening just might not be as high as if they did do testing.
More and more places are doing that mobile testing van, at least here(TN) it is a van, and some diesels are still exempt from emissions testing, but this thing gets everyone with pictures. Now, of course, it can't see the EGR, but another mod that most diesel people do is the CAT delete and that it can find.
You might, but then again you might not. There are a lot of factors at go into MPG, some more influential then others.
To the OP: You mentioned that you did having testing, however, even if you go to a place that doesn't have testing you could still get caught and fined, your chances of that happening just might not be as high as if they did do testing.
More and more places are doing that mobile testing van, at least here(TN) it is a van, and some diesels are still exempt from emissions testing, but this thing gets everyone with pictures. Now, of course, it can't see the EGR, but another mod that most diesel people do is the CAT delete and that it can find.
More Turbo
Joined: May 2003
Posts: 526
Likes: 7
From: Houston
I deleted the EGR cooler from my '04. Left the valve plugged in. The truck runs fine and has been trouble-free for 60K miles since. It never threw a CEL and there's never been a need for a tuner or anything like that. All the problems I was having with the truck went in the trash with that POS EGR cooler. Whoever designed that should be horsewhipped.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
I deleted the EGR cooler from my '04. Left the valve plugged in. The truck runs fine and has been trouble-free for 60K miles since. It never threw a CEL and there's never been a need for a tuner or anything like that. All the problems I was having with the truck went in the trash with that POS EGR cooler. Whoever designed that should be horsewhipped.
It isn't the cooler that is the EGR cooler that is the issue, it is just the easiest thing that the layman can identify as a problem. It's a symptom.
You can actually still have a problem with your truck, but then again, you may not, however, it doesn't mean that you actually got rid of the root issue that people have with the 6.0. I personally know of 3 people ( 2 of which investigated as to what the issue was this time) that did the cooler delete and still had to have things fixed that getting rid of the EGR system was supposed to have "solved".
If the EGR cooler is this horrible creation, then why do I still have my original coolers? I'm flowing 40% more fuel then 96% of the 6.0 owning population and still have my original coolers. Now, yes I am a statistic of one and I'll probably always be a statistic of one, because people at my level of modification rarely keep any emissions equipment. However, based on what people believe about the EGR system, I shouldn't even be a statistic of one.
More Turbo
Joined: May 2003
Posts: 526
Likes: 7
From: Houston
58276.5 miles since removing the cooler. All problems with the truck went away. If that was a symptom, the root cause is doing a hell of a job laying low. Just another statistic of one..
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
If you took care of the oil cooler and you got a better oil cooler that won't give you any more problems, does that really mean that deleting the EGR was a fix? No, it doesn't. It means it could have been, but it could also have been the oil cooler that was fixed as well.
More Turbo
Joined: May 2003
Posts: 526
Likes: 7
From: Houston
If you took care of the oil cooler and you got a better oil cooler that won't give you any more problems, does that really mean that deleting the EGR was a fix? No, it doesn't. It means it could have been, but it could also have been the oil cooler that was fixed as well.
EGR cooler core finally split catastrophically after having been leaking for awhile. Filled exhaust with coolant. Not cool. As you know the exhaust manifold goes up at the rear, so the coolant had nowhere to go. From the manifold to the up-pipe EGR port was 100% coolant. PM me an email and I'll send you pics if you must. (Tuesday, they're on my work computer).
When I disconnected the up-pipe I got a bit of a coolant bath. Nice. Then used a turkey baster and filled a 1 lb coffee can with the coolant I sucked out of the exhaust manifold. Had the engineer responsible for that appeared at that moment I would have killed him with my bare hands.
No problems to report since.
Truck is 100% stock otherwise as pertains to engine/exhaust. Only other mod I ever did was a lift kit. Still using all stock filters. Never put any sort of tuner on it.