Will changing the egr value with vagcom keep light from coming on?

jredecop

Member
Joined
Apr 16, 2007
Location
TX
TDI
2000 Beetle
I just cleaned my intake and realized how much egr really sucks so I stuck a tee in the vacuum hose to the egr valve. Now of course I get a CEL and was wondering if changing the values through vagcom would be enough to keep the light off. Thanks for your help, I have searched and not found this answer.
 

mrGutWrench

Top Post Dawg
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Aug 29, 2002
Location
Carrboro, NC
TDI
'03 Jetta Wagon, 5-speed, 563K Miles (July '23)
jredecop said:
I just cleaned my intake and realized how much egr really sucks so I stuck a tee in the vacuum hose to the egr valve. Now of course I get a CEL and was wondering if changing the values through vagcom would be enough to keep the light off. Thanks for your help, I have searched and not found this answer.
__. No, if you have a golf tee in your vacuum line, you will most likely get a CEL (a few tried the T-trick and didn't get the CEL but there doesn't seem to be an explanation on why there's this variability).
 

Powder Hound

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Oct 25, 1999
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Under a Bridge, Crestview, FL, USA
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'00 Golf 4dr White 5sp, '02 Jettachero 5sp, Wife's '03 NB Platinum Gray auto(!)
If you change the EGR to its minimum duty cycle (which is what the change mentioned is) then the intake clogging problem will be minimized, while keeping a "stock" appearance.

Another help for this problem is to install the elephant hose or some kind of filter on the CCV line. Unfortunately due to seepage through the turbocharger seal (impeller side), you can't completely purge the liquid component of the clogging material from the intake manifold.

You can try this stuff. Like MrG said, it might work and it might not. Additionally, this stuff has been said assuming you have a non-PD engine. The controls for the PD are much different, and haven't been sorted in this same way. Yet.
 

TornadoRed

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Aug 3, 2003
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West Des Moines (formerly St Paul)
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2003 Golf GLS 5-spd, indigo blue; 2003 Jetta TDI wagon, silver; 2003 Jetta TDI wagon, indigo blue; 2003 Golf GL 5-spd, red (retired); 2003 Jetta TDI wagon, Candy White (sold)
jredecop said:
I just cleaned my intake and realized how much egr really sucks so I stuck a tee in the vacuum hose to the egr valve. Now of course I get a CEL and was wondering if changing the values through vagcom would be enough to keep the light off. Thanks for your help, I have searched and not found this answer.
Because you have a 2000 TDI, reducing the EGR duty cycle might work. It rarely works for the newer ones, but you might get lucky. Try it and report back.
 

jredecop

Member
Joined
Apr 16, 2007
Location
TX
TDI
2000 Beetle
compu_85 said:
On my car the light would come on and go out ever 3rd drive.

-Jason
I have not changed the egr cycle yet(wanted to check some things out before I bought the software)but mine seems to be doing the same thing. It will come on, stay for a little while and turn back off...weird.

Additionally, this stuff has been said assuming you have a non-PD engine. The controls for the PD are much different, and haven't been sorted in this same way. Yet.
Yup, its a 2000 beetle.

Also, my engine is almost twice as loud as my dads 1999 manual beetle...why? Do the auto's have different injection pumps like the cummins used to?
 

alphaseinor

TDI Innovator, Gone but Not Forgotten
Joined
Jul 30, 2006
Location
Denton, TX
TDI
'03 Jetta TDI 780,000 miles (totaled out), 01 Audi TT 225 Quattro 230,000 Miles (runs great!), 00 Cabreetle Beetle dash, ALH & MK4 harness Swap
The automatics have an 11mm pump the manuals have a 10mm... check your timing, it shouldn't be twice as loud. What part of TX are you?
 

jredecop

Member
Joined
Apr 16, 2007
Location
TX
TDI
2000 Beetle
alphaseinor said:
What part of TX are you?
west texas, i also dont have my splash shield on under the car, was in rough shape so I just took it off, not sure if that makes a big difference.
 

alphaseinor

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Jul 30, 2006
Location
Denton, TX
TDI
'03 Jetta TDI 780,000 miles (totaled out), 01 Audi TT 225 Quattro 230,000 Miles (runs great!), 00 Cabreetle Beetle dash, ALH & MK4 harness Swap
Jeff at rocketchip (jsrmonster here on the boards) has a nice upgrade for your car... you might also call:
TechnicalDieselInnovations
Steve Glover (mtbr297 on TDI club)

mtbr244@hotmail.com
(817) 244-7747 cell (817) 915-4063
Fort Worth, TX
Have vagcom, timing belts, service and other mods

He's got an aligator programmer...
 

jredecop

Member
Joined
Apr 16, 2007
Location
TX
TDI
2000 Beetle
alphaseinor said:
Jeff at rocketchip (jsrmonster here on the boards) has a nice upgrade for your car... you might also call:
TechnicalDieselInnovations
Steve Glover (mtbr297 on TDI club)

mtbr244@hotmail.com
(817) 244-7747 cell (817) 915-4063
Fort Worth, TX
Have vagcom, timing belts, service and other mods

He's got an aligator programmer...
awesome thanks for your help
 

n1das

TDIClub Enthusiast, Veteran Member
Joined
Jun 11, 2002
Location
Nashua, NH, USA
TDI
2014 BMW 535xd ///M-Sport, 2012 BMW X5 Xdrive35d, former 3x TDI owner
jredecop said:
I just cleaned my intake and realized how much egr really sucks so I stuck a tee in the vacuum hose to the egr valve. Now of course I get a CEL and was wondering if changing the values through vagcom would be enough to keep the light off. Thanks for your help, I have searched and not found this answer.
Disclaimer: These mods are for off-road use only.

I did the golf tee mod at 101k miles and with stock performance. NO CEL. I had done the VAG-COM EGR adapatation mod about 50k miles earlier. I did my intake cleaning with Herm TDI at 117k miles. I had mild clogging, typical of a TDI used for aggressively haulin' arse on the highway. It was enough that I was beginning to notice a drop in MPGs and performance. I was amazed at the improvement in performance and MPGs after the intake cleaning. And still no CEL with the golf tee mod.

Contrary to popular belief, the VAG-COM EGR adaptation mod does little to nothing to help reduce intake clogging. It may slow clogging some but doesn't prevent it. It DOES however appear to help minimize the the chance of triggering an EGR-related CEL code if you've done the golf tee mod or have a racepipe installed. The ECU detects if the EGR is working or not by looking for a corresponding drop in the MAF numbers whenever the ECU calls for EGR action. The VAG-COM EGR adaptation mod supposedly causes the ECU to look for LESS of a drop in the MAF numbers, such that the ECU can't see the EGR not being there.

To answer your question, I think YES, the VAG-COM EGR adaptation mod DOES help minimize the chance of triggering an EGR-related CEL code. I think it helps minimize it but may not prevent it under all conditions. YMMV.

Another method for eliminating an EGR-related CEL is to install an Epsilonian device (search on "Epsilonian mod") to mimick the slight drop in MAF numbers whenever the EGR is on. You probably don't need this if you've done the EGR adaptation mod.

Chipping my Golf TDI with RC3 at 147k miles didn't change anything EGR-related in my car. Same behavior before and after.

Good luck.
 
Last edited:

jredecop

Member
Joined
Apr 16, 2007
Location
TX
TDI
2000 Beetle
n1das said:
Disclaimer: These mods are for off-road use only.

I did the golf tee mod at 101k miles and with stock performance. NO CEL. I had done the VAG-COM EGR adapatation mod about 50k miles earlier. I did my intake cleaning with Herm TDI at 117k miles. I had mild clogging, typical of a TDI used for aggressively haulin' arse on the highway. It was enough that I was beginning to notice a drop in MPGs and performance. I was amazed at the improvement in performance and MPGs after the intake cleaning. And still no CEL with the golf tee mod.

Contrary to popular belief, the VAG-COM EGR adaptation mod does little to nothing to help reduce intake clogging. It may slow clogging some but doesn't prevent it. It DOES however appear to help minimize the the chance of triggering an EGR-related CEL code if you've done the golf tee mod or have a racepipe installed. The ECU detects if the EGR is working or not by looking for a corresponding drop in the MAF numbers whenever the ECU calls for EGR action. The VAG-COM EGR adaptation mod supposedly causes the ECU to look for LESS of a drop in the MAF numbers, such that the ECU can't see the EGR not being there.

To answer your question, I think YES, the VAG-COM EGR adaptation mod DOES help minimize the chance of triggering an EGR-related CEL code. I think it helps minimize it but may not prevent it under all conditions. YMMV.

Another method for eliminating an EGR-related CEL is to install an Epsilonian device (search on "Epsilonian mod") to mimick the slight drop in MAF numbers whenever the EGR is on. You probably don't need this if you've done the EGR adaptation mod.

Chipping my Golf TDI with RC3 at 147k miles didn't change anything EGR-related in my car. Same behavior before and after.

Good luck.
cool, i am going to try this and i will update, thanks for your help....what year is your car?
 
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