EGR unhooked or hooked
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Senior User
Joined: Sep 2004
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EGR unhooked or hooked
Has anybody done a poll asking? Mine fell off and has run fine for 10K. Just wondering what the % might be. It seems that I see more & more posts where unhooking it solves problems. What do you do, leave it unhooked so you will surely have to take it in at some point? I have chosen to leave it out. I think it is those pesky squirrels we have around here!
Elder User
Joined: Feb 2005
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From: Cool, CA
I'd like to see those squirrels unplug mine, but being a CA model I don't want to stare at the check engine light. Anyone got any ideas on how to make the light go out (without plugging it back in?)
Lead Driver
Joined: Sep 2003
Posts: 5,241
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From: Other side of the sunrise
I think it is just a matter of time before some genious here on FTE figures out how to bipass the system to fool the computer into thinking it is plugged in.
Come on genious', that was a hint. Hint hint hint. I'm tired of looking at my check engine light too. I plugged mine back in so as to not have to look at it.
Come on genious', that was a hint. Hint hint hint. I'm tired of looking at my check engine light too. I plugged mine back in so as to not have to look at it.
Senior User
Joined: Dec 2003
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Since I got the ...FTE flash my truck runs better with it plugged in go figure. I've tried it both ways for at least 3K miles. I now the benefits off not having it in but in my case I get too much turbo lag with it out.
More Turbo
Joined: Feb 2004
Posts: 722
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From: New Orleans to San Diego
Thats my experience on the new flash i got on monday.
Seems to run better one day plugged in versus the next day unplugged.
I sure am curious about opening the EGR body for cleaning and a good going over.
My luck i'll spend all day opening it up and it will turn out to be spotless.....
I wish those pesky squirrels would just take a rag and carb cleaner and scrub it out for me
Seems to run better one day plugged in versus the next day unplugged.
I sure am curious about opening the EGR body for cleaning and a good going over.
My luck i'll spend all day opening it up and it will turn out to be spotless.....
I wish those pesky squirrels would just take a rag and carb cleaner and scrub it out for me
Last edited by LOOnatic; Mar 30, 2005 at 09:34 AM.
Postmaster
Joined: Jan 2005
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From: Saskatoon, SK
I unhooked mine to see if it was maybe the cause of some coolant puking --> my idea was that the coolant was being over heated by the EGR cooler and causing the expansion of the coolant beyond the limits of the overflow bottle. No, the truck still pukes the odd time. No codes or engine light though. I am running the 3U7A 12A650 FTE flash on my '03.
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Elder User
Joined: Jan 2003
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From: Baltimore
I don't know if Ford/International is doing this yet but the heavy truck manufacturers look for the EGR valve in their software. If the software doesn't see a functioning EGR valve, the software "detunes" the engine parameters. This makes the engine run definitely worse when the EGR valve is not connected.
Since it has been mentioned above that the engines run better with the EGR connected, I am wondering if the newer software is doing some "detuning" when the EGR isn't seen.
Since it has been mentioned above that the engines run better with the EGR connected, I am wondering if the newer software is doing some "detuning" when the EGR isn't seen.
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Senior User
Joined: Dec 2003
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It's got to be in some fail safe mode. I once was able to epoxy the outlet hole on a gasser egr, so that the computer thought it was working but didn't have any flow. Maybe someone could come up with something and share.
Senior User
Joined: Jun 2003
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I have never unpluged mine. I have not had any trouble with it.
The old saying goes:
If it ain't broke, don't fix it.
I do run fuel additive through out the year. Maybe that helps.
I do not know, but this "old 03" sure does run good with everything
plugged up
!
EJ
The old saying goes:
If it ain't broke, don't fix it.
I do run fuel additive through out the year. Maybe that helps.
I do not know, but this "old 03" sure does run good with everything
plugged up
!EJ
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Senior User
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My concern is that nobody knows the longterm damage that this system can cause to the engine. I am intending to drive mine for 300K or more so what do I do. I wonder what the most miles with one hooked up anyone has? I havn't seen any talk about more than 100K. When it comes to mechanical in & outs PSD seems to know a lot about these trucks & I think he has had his fall out also.. Tim what is the most miles you have seen on this site? KW? SVB? Just wondering while I watch my beagle chase squirrels!
Senior User
Joined: Feb 2004
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From: Statesvegas, NC
I would agree w/ above posts in regards to the EGR disconnect resulting in the computers going in a failsafe mode or something as my Xmonitor consistently produces boost numbers 2 to 3 lbs less than when connected. Could the EGR gases being reintroduced increase the boost in some way or would it be in the programming??? I'm not quite sure how all that works so its an honest question?
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Joined: Jul 2004
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From: W. Philly Burbs
Not a brain surgeon or engineer here, but having the EGR connected will not, in and of itself increase boost...........it makes no sense, putting in some extra dirty air will do nothing, otherwise all the regular cars out there would be running "boost". its more likely a computer related issue when it comes to EGR questions.
Me, myself, i have a bit of lag on my dually (up till around 17-1800 rpm) but id rather dal with the lag than put that exhaiust soot crap back into my intake, a gasser is bad enough, i have a 6 inch tailpipe from hog exhuast (from motorhaven) and the whole inside looks as if it were burnt and fried, i dont mind helping the environment, but i dont wana spend 50 gs on a truck with this kinda engine to put extra crap back into it either, i say let the engineers figure it out, it can be done, it will only cost money, which no one wants to do
Me, myself, i have a bit of lag on my dually (up till around 17-1800 rpm) but id rather dal with the lag than put that exhaiust soot crap back into my intake, a gasser is bad enough, i have a 6 inch tailpipe from hog exhuast (from motorhaven) and the whole inside looks as if it were burnt and fried, i dont mind helping the environment, but i dont wana spend 50 gs on a truck with this kinda engine to put extra crap back into it either, i say let the engineers figure it out, it can be done, it will only cost money, which no one wants to do
Postmaster
Joined: Aug 2003
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From: Central Texas
The PCM will use preset parameters when it senses a device "out of range". So when the PCM sees the EGR with no signal at all, it defaults to a set of parameters to let the engine run without the device if possible. I would guess those preset parameters are conservative and subsequently you don't get "full" performance.
As for the EGR, PSD60L FX4 posted some descriptions of one engine they had torn down the upper end that had one intake port almost closed with soot. I don't know how many miles it had on it.
I am beginning to believe fuel quality has a lot to do with these engines. That is why I use Stanadyne with almost every tank, especially in the winter months.
As for the EGR, PSD60L FX4 posted some descriptions of one engine they had torn down the upper end that had one intake port almost closed with soot. I don't know how many miles it had on it.
I am beginning to believe fuel quality has a lot to do with these engines. That is why I use Stanadyne with almost every tank, especially in the winter months.