How to shut off EGR with tweecer

WhiteDevil

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Feb 4, 2003

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#1

• Oct 30, 2005

• #1

Well i need to turn it off for a few days while i wait for my 50resto tube extender to get here. What do i need to change on the tweecer to turn it off for the time being?

 

DarkProphet

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Aug 19, 2002

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#2

• Oct 30, 2005

• #2

I belive under EGR you put 0 instead of 1, Not sure because I dont have a tweecer, but I remember someone saying you just change the scaler from 1 to zero.

 

WhiteDevil

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#3

• Oct 30, 2005

• #3

yeah i was thinkin that too, cause thats how you turn off most other things, but mine is already at 0 and thats factory so it must be something else.

 

CManT1914

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Feb 5, 2004

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Oct 30, 2005

#4

• Oct 30, 2005

• #4

EGR Switch Type Scalar - Values

0 = EGR is working and accessing its tables (DEFAULT)
2 = EGR is disabled and bypassing its tables

Thermactor Present Scalar Values - (A.K.A. Smog Pump/Air Pump)

1 = Thermactor is present (DEFAULT)
0 = Thermactor is disabled

 

WhiteDevil

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#5

• Oct 30, 2005

• #5

Gracias Chris, its wierd how some things you put a 0 to turn it off and some a 0 means it on, lol.

 

CManT1914

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#6

• Oct 30, 2005

• #6

WhiteDevil said:

Gracias Chris, its wierd how some things you put a 0 to turn it off and some a 0 means it on, lol.

Click to expand...

I know it, I always get the EGR and smog confused. That's why I posted both of them. FWIW, here's a link to THE BEST tweecer thread EVA!!

http://forums.stangnet.com/showthread.php?t=319429&highlight=tweecer+faq

 

R

rockin_rick

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Oct 9, 2003

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Oct 30, 2005

#7

• Oct 30, 2005

• #7

WhiteDevil said:

Gracias Chris, its wierd how some things you put a 0 to turn it off and some a 0 means it on, lol.

Click to expand...

This did intrigue me as to why EGR off isn't '0', so I did a little research...

I think that it probably is intended to always have 0 as 'off', but I'm guessing that in this case, off (2) was added as an afterthought.

In the GFUB strategy doc's listing of the strategy evolution, it says (p. 1-11):

Add a third position to PFEHP; If PFEHP = 2, disable EGR strategy.

Click to expand...

(PFEHP is the PID name for the scalar "EGR present")

Perhaps the other 2 (0 and 1) were already used in past strategys without having #2 (off) an option, and to avoid confusion, they didn't change the values around to make 0=off in this strategy. Or maybe they had already coded the other values in, and to avoid having to change completed code, they just added the '2'.

FWIW...
Rick

 

WhiteDevil

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#8

• Oct 30, 2005

• #8

Hmmm, sounds good, always love learnin more about the EEC.