why does an egr delete throw a code?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,738
Likes: 2,667
From: SE Florida
If you clear the codes it will turn off the light. The light will come back on when the PCM doesn't see the EGR. If you don't buy custom software to fix this you're always going to have the light on.
Mountain Pass
Joined: Jun 2014
Posts: 231
Likes: 4
From: Texas
Just want to clear up a question I have...
IF an EGR delete were performed, and run SCT Street or Tow tune, will the fan behave properly without the EGR valve plugged in?
Any reason to remove EGR valve block-off plate and re-install EGR valve if it is needed for the fan operation.
IF an EGR delete were performed, and run SCT Street or Tow tune, will the fan behave properly without the EGR valve plugged in?
Any reason to remove EGR valve block-off plate and re-install EGR valve if it is needed for the fan operation.
Posting Guru
Joined: Nov 2012
Posts: 2,123
Likes: 5
Many people have found that you can just leave it laying in the valley and as long as it is plugged in electricaly the fan will work correctly. Apparently there is some feed back signal needed from the egr valve it self.
Mountain Pass
Joined: Jun 2014
Posts: 231
Likes: 4
From: Texas
Even with SCT Tune loaded?
Senior User
Joined: Jul 2011
Posts: 226
Likes: 0
From: Grays Harbor ,WA
I really hate to beat a dead horse and I suppose you could say hijack LOL, but I don't understand the benefit if any of the block off plate and leaving the egr plugged in and laying the in valley..
Posting Guru
Joined: Nov 2012
Posts: 2,123
Likes: 5
As far as I know the tune only cancells the light. I have long suspected it also has to change some values that the PCM would normally expect to see when the EGR normaly would open and close. However I have not seen any documentation pro or con.
The plugging it in is for fan operation only.
The plugging it in is for fan operation only.
Tuned
Joined: May 2014
Posts: 302
Likes: 7
From: Oregon
My assumption is yes, but I'm in the process of testing this.
I know, for instance, my truck wouldn't do a turbo relearn until the EGR was plugged in, so there are some things that still need the EGR plugged in. Same thing with '03 motors that have an inferred EBP, the computer still needs the EBP sensor plugged in for reference voltage or else havoc arises.
I know, for instance, my truck wouldn't do a turbo relearn until the EGR was plugged in, so there are some things that still need the EGR plugged in. Same thing with '03 motors that have an inferred EBP, the computer still needs the EBP sensor plugged in for reference voltage or else havoc arises.
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Posting Guru
Joined: Dec 2012
Posts: 1,644
Likes: 3
From: SW Ohio
You can turn off the EGR parameters with an SCT tuner.
Most tuners will ask you if you have a deleted EGR and will write the tune accordingly! The EGR is left in with the canned tunes and is recommend so the PCM sees a parameter and does not affect the fan speed!
Most tuners will ask you if you have a deleted EGR and will write the tune accordingly! The EGR is left in with the canned tunes and is recommend so the PCM sees a parameter and does not affect the fan speed!
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the_sharkster
1987 - 1996 F150 & Larger F-Series Trucks
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Mar 7, 2007 02:04 PM