EGR Disconnect Instructions
Senior User
Joined: Apr 2004
Posts: 319
Likes: 1
From: Oshawa/Ontario/Canada
I don't remember talking about a second plug. Some 6.0l engines have a throttle plate and others do not. If you simply disconnect the EGR, you should be fine either way --- but ensure you do it with the engine "off" ...
If you have a throttle plate _and_ you have a truck that thows an SES light when the EGR is unplugged, you may opt to get a false EGR plugged into the system. If you do this, you will need to remove the throttle plate ... and there's instructions somewhere here for that.
But just to re-emphasize, I'm talking about diesel engines, not gas. Removing the throttle plate from a gas engine is not likely a good idea.
If you have a throttle plate _and_ you have a truck that thows an SES light when the EGR is unplugged, you may opt to get a false EGR plugged into the system. If you do this, you will need to remove the throttle plate ... and there's instructions somewhere here for that.
But just to re-emphasize, I'm talking about diesel engines, not gas. Removing the throttle plate from a gas engine is not likely a good idea.
Freshman User
Joined: Apr 2005
Posts: 25
Likes: 0
From: CT
Originally Posted by ZBeeble
I don't remember talking about a second plug. Some 6.0l engines have a throttle plate and others do not. If you simply disconnect the EGR, you should be fine either way --- but ensure you do it with the engine "off" ...
If you have a throttle plate _and_ you have a truck that thows an SES light when the EGR is unplugged, you may opt to get a false EGR plugged into the system. If you do this, you will need to remove the throttle plate ... and there's instructions somewhere here for that.
But just to re-emphasize, I'm talking about diesel engines, not gas. Removing the throttle plate from a gas engine is not likely a good idea.
If you have a throttle plate _and_ you have a truck that thows an SES light when the EGR is unplugged, you may opt to get a false EGR plugged into the system. If you do this, you will need to remove the throttle plate ... and there's instructions somewhere here for that.
But just to re-emphasize, I'm talking about diesel engines, not gas. Removing the throttle plate from a gas engine is not likely a good idea.
When posting a reply that is directly above … THERE IS NO NEED TO USE THE QUOTE FUNCTION....lets say we get 2500 posts a week, just to pick a number, and only 50 percent used the quote function…well, you can imagine how many extra pages are used, and not needed…If you are pulling out a single line or sentences then do so and use the quote function.
Thanks Admin Tim here
New User
Joined: May 2005
Posts: 3
Likes: 0
First post on FTE
My more detailed post was mysteriously deleted so here's a Reader's Digest version:
Spent all day reading this thread and was very excited until I got to the last few pages where I learned that disconnecting the EGR from my 05 could cause considerable build-up on the inlet side of the valve.
I plan on upgrading my exhaust pipes soon and am thinking about just waiting until then and replacing my uppipes with 04s at that time. Sorry PSD 60L Fx4, I can't see taking a torch to her just yet.
I need some reaffirmation here please. Am I off the mark?
I'm not ask concerned about performance enhancement as I am about crud in the engine. For some reason I can't seem to shake that "tube from butt to mouth" analogy I read earlier.
Any and all comments are greatly appreciated (especially PSD 60L Fx4 since you seem to be one of the resident experts on this issue).
Spent all day reading this thread and was very excited until I got to the last few pages where I learned that disconnecting the EGR from my 05 could cause considerable build-up on the inlet side of the valve.
I plan on upgrading my exhaust pipes soon and am thinking about just waiting until then and replacing my uppipes with 04s at that time. Sorry PSD 60L Fx4, I can't see taking a torch to her just yet.
I need some reaffirmation here please. Am I off the mark?
I'm not ask concerned about performance enhancement as I am about crud in the engine. For some reason I can't seem to shake that "tube from butt to mouth" analogy I read earlier.
Any and all comments are greatly appreciated (especially PSD 60L Fx4 since you seem to be one of the resident experts on this issue).
Posting Guru
Joined: Mar 2002
Posts: 2,070
Likes: 2
From: Boise, Idaho
I got through about 15 of 35 pages of blah-blah on this subject. From what I'd read up to that point, I didn't expect to see any real information arise in the next 20 pages.
It seems clear that few people, especially the guys who are monkeying with their diesels, know what ERG does. It seems like EGR got a bad reputation at some point and it has never recovered.
I had been hoping to read someone's report on the effect of removing EGR in fuel economy. Up through page 15, all I read were words to the effect of "...seems like I'm getting better fuel economy..." but no real world numbers. About the only thing that was reported as 'better' was throttle response. Otherwise, there was more far more noise than data in this signal stream.
Does anybody want to try and explain why you're all so hot to remove the EGR?
It seems clear that few people, especially the guys who are monkeying with their diesels, know what ERG does. It seems like EGR got a bad reputation at some point and it has never recovered.
I had been hoping to read someone's report on the effect of removing EGR in fuel economy. Up through page 15, all I read were words to the effect of "...seems like I'm getting better fuel economy..." but no real world numbers. About the only thing that was reported as 'better' was throttle response. Otherwise, there was more far more noise than data in this signal stream.
Does anybody want to try and explain why you're all so hot to remove the EGR?
Senior User
Joined: Mar 2004
Posts: 394
Likes: 0
From: s.f. bay area
Well, in my case, I lost arount 2-3 mpg when I changed my exhaust from stock to a 4" (the DP is 3.5). This is a california truck with the latest flash. Removing the EGR has gotten me back all the mpg that I lost with the exhaust change. Now I am back to good mpg with 150 degrees less EGT. Just wish I didn't have to look at the CEL on all the time.l
Posting Guru
Joined: Mar 2002
Posts: 2,070
Likes: 2
From: Boise, Idaho
Originally Posted by n6nfg
Well, in my case, I lost arount 2-3 mpg when I changed my exhaust from stock to a 4" (the DP is 3.5). This is a california truck with the latest flash. Removing the EGR has gotten me back all the mpg that I lost with the exhaust change. Now I am back to good mpg with 150 degrees less EGT. Just wish I didn't have to look at the CEL on all the time.l
Senior User
Joined: Mar 2004
Posts: 394
Likes: 0
From: s.f. bay area
No, No, No... The EGR removal had nothing to do with the EGT reduction, this was a benefit of the exhaust change. The mileage reduction is probably due to the reduced exhaust back pressure readings from the EBP sensor causing the PCM to change the VGT turbo control stuff or something. These engines seem to be very sensitive to the EBP readings, and any exhaust change will likely have an effect (in my case a negative effect on mileage). I don't know really why the EGR removal increased the mpg back up, other then the PCM is just seeing different operating conditions that happen to give a better balance of things. I did loose around 5 PSI of boost pressure with the EGR removed, but this doesn't seem to have had an effect on performance (haven't tried towing yet). My zero to 60 times are virtually identical with or without the EGR, even though the max boost has gone from 27 down to 22. The boost reduction is probably a safe mode the PCM is using as a result of the EGR "malfunction".
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Tuned
Joined: Sep 2001
Posts: 340
Likes: 1
From: Texas
I gained about 1.5mpg by disconnecting the EGR but lost some performance. If you work your truck hard you should have no reason to disconnect your EGR...if you drive it like a soccer mom and idle allot then you might have something to gain by disconnecting it.
Post Fiend
Joined: Apr 2004
Posts: 19,098
Likes: 8
From: Great State of Texas
The EGR Valve has been the most frequently diagnosed cause of a variety of 6.0 engine issues. I seriously doubt that all these failed EGR valves could be attributed to the driving characteristics of soccer moms or extended idle time.
If anyone is considering disabling their EGR valve for MPG or performance enhancement I think they have the opportunity to be disappointed.
IMO: The only justification for disabling this nuisance is to try to insure extended engine reliability. As this pesky part fails a cascade effect typically takes place. The EGR valve failure begets another part failure, which begets another....The domino theory in full bloom.
Much like programmers and other mods, this is a personal choice. Be informed and make the right decision, as you see it, for your truck. But again, make your decision for engine longevity, not enhanced performance or increased MPG.
If anyone is considering disabling their EGR valve for MPG or performance enhancement I think they have the opportunity to be disappointed.
IMO: The only justification for disabling this nuisance is to try to insure extended engine reliability. As this pesky part fails a cascade effect typically takes place. The EGR valve failure begets another part failure, which begets another....The domino theory in full bloom.
Much like programmers and other mods, this is a personal choice. Be informed and make the right decision, as you see it, for your truck. But again, make your decision for engine longevity, not enhanced performance or increased MPG.
Elder User
Joined: Mar 2005
Posts: 644
Likes: 0
after spending about 3 hours readin this whole thing i want to bring it up for the 05 owned and maybe it is somewhere else but im so tired to look, is it a good idea or not for the 05 to disconnect the egr...and if not what can we do to help prevent diposit build up is there an additive we can put in the fuel or soemthin heck i dunno...also spellin ya...im from texas
New User
Joined: Jul 2005
Posts: 1
Likes: 0
EGR Disconnect Solves Turbo Flutter/Surging
I just read the article on the EGR disconnect, I have been having serious turbo flutter/surging along with thick black smoke from exhaust for the last 4 weeks. My 2004 F350 6.0 has 31,000 miles. The problem mainly occurs while going up a slight grade under medium exceleration or on the highway on cruise control under medium acceleration. Under hard acceleration the problem goes away. I have been to the dealer 3 times. I had the EBP (Exhaust Back Pressure) valve/sensor replaced, and a fuel injector wiring harness replaced, but these fixes had no effect at all on problem. Disconnecting EGR instantly solved the problem, motor runs like new. Thank you, Thank you, Thank you
