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EGR and AIR Removal

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Old 07-16-2017, 03:27 AM   #1
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EGR and AIR Removal

Question is directly related to another thread I have at
https://www.thirdgen.org/forums/elec...e-34-help.html (Code 34 HELP)


Basically I have code34 and as I went through all the troubleshooting step to no avail I am suspecting (thanks for a recommendation of a fellow member on here) that the car is running in limp mode due to EGR problems (Code 32).


I think my egr is faulty due to a damaged EGR Solenoid which has seen better days. I cannot find a replacement for it and so I want to disable EGR alltogether. I wont remove the actual EGR Valve at least until I have to remove the plenum for something else, but I will remove the EGR Solenoid and block off all related vacum lines.
I have blank PROMs, programmer, Adapter and OBD Cable. I already read the BIN from a JET chip the PO did and have also sourced the stock bin. Actually my car has AKXZ chip however as I couldnt find it, I am basing stock on AKXY which should be the same but without VATS (I was told).
I am using 32B.xdf and 1227165_6E.adx in tunerpro.





My questions:
I read that to disable EGR you need to max and min out some values. In my tunerpro I have an option under Flags called "EGR Diagnostic (Err 32)". Can I simply put this to Not Set?
I also read that there is another place to modify when you remove the whole AIR system so that the car doesnt read rich more than it normally is. Can someone point me to the place based on the xdf and adx files I am using?
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Old 07-16-2017, 03:45 AM   #2
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Re: EGR and AIR Removal

For clarity, this is the xdf I am using (rename to .xdf.
Not even sure if it is the correct one for my 1988 5.7TPI Auto with 3.27 9-bolt Diff.


Maybe I should try use the 6E_expanded?
Attached Files
File Type: txt 32B.txt (53.2 KB, 6 views)
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Old 07-16-2017, 04:15 PM   #3
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Re: EGR and AIR Removal

If you want to make the EGR system work, any three way 12v solenoid valve from just about any vehicle would work. They typically have about a 35 ohm coil. You just want it hooked up so the EGR gets manifold vacuum when energized, and the manifold vacuum source is blocked with the valve vented to atmosphere on the 3rd port when not energized.

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Old 07-16-2017, 06:05 PM   #4
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Re: EGR and AIR Removal

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Old 07-17-2017, 12:00 AM   #5
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Re: EGR and AIR Removal

At this point I think I would prefer having egr removed as I also decrease the likelihood of having vacuum leaks.

Not sure I am understanding your instructions tuned... Will check again the post.

Can you perhaps confirm which xdf I should use?
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Old 07-17-2017, 12:16 AM   #6
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Re: EGR and AIR Removal

87-88 uses 32B, 89 uses 6E.

AKXZ would be 88, therefore uses 32B.

You need to set minimum MAT temp EGR enable scalar to its maximum possible setting. This will prevent the EGR from ever turning on.

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Old 07-17-2017, 12:24 AM   #7
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Re: EGR and AIR Removal

Ok great. I assume that apart from setting MAT for EGR to highest I also need to disable the Err32 flag correct?

Also is there any better 32b xdf which has more details? Like the expanded 6e?
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Old 07-17-2017, 12:30 AM   #8
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Re: EGR and AIR Removal

Actually I don't think you need to mess with the error 32 flag at all. With the enable temp set all the way up it will never attempt to turn the EGR on and therefore will not actually test the system either.

At least that's how it seems to work in 6E.

GD
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Old 07-17-2017, 01:10 AM   #9
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Re: EGR and AIR Removal

Understood. Will try it out. Thanks GD.
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