Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You

Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

Thread Tools
Old January 24th, 2010, 04:59   #16
Veteran Member
Join Date: Aug 2007
Location: Chapin, South Carolina, USA

Thanks for catching that.
DanG144 is offline   Reply With Quote
Old January 24th, 2010, 08:54   #17
Join Date: Jan 2009
Location: Orangeville,Ont
TDI(s): 1997 Jetta

Cam and lifters are worn out.
ScotR is offline   Reply With Quote
Old January 24th, 2010, 09:00   #18
Veteran Member
JASONP's Avatar
Join Date: Feb 2008
Location: Guelph
Fuel Economy: 4.5l/100

Originally Posted by DanG144
We stay low tech, but I am always willing to learn a better method.

This is all going from memory...

I do the basic settings block 3 test with VCDS. Normally when the EGR is open you get half the flow with the EGR closed. Say 450 and 225 mg/stroke. If the flow dies off to 120 or so when the egr is throttled open, that is a sign of either an EGR problem or plugged exhaust, causing high backpressure, causing low fresh air intake flow.

You can also do the OUTPUT TESTS, one of them checks EGR function as well, but at idle instead of at 1400 rpm as the BASIC SETTINGS test does.

I also take a log of full throttle operation from 2k to 4k in 3rd, and see if air flow dies off excessively at higher rpm. This can be a problem to judge unless you have a log of the same car/tune during the same run. So then...

Just remove the three bolts from the turbo to the downpipe, tie it back, and go for a short full power run just like before. Compare this to logs from before, and see if air flow is up for a given intake pressure and RPM.

Dan I do think you are spot on here car idles bad, owner says he gets crap milage,the EGR Duty Cycle looks (to me ) way too high for idle, the number of MAFs he's replaced in the past few months, and he says he gets tons of balck smoke.

Ben the easiest way I can think of is takke the car to a muffler shop and have them remove the CAT for inspection, OR you can go to a Commercial Diesel Inspection shop and have them do an exhaust analasys.

We can also try turning down the IQ with VAG.
2015 Golf TDI Comfort line
2L, 6spd, Leatherette 4.5L/100 km

2001 Jetta TDI 357,000 km 01M/2002 Golf TDI 285,000 km 01/2010 GSW TDI 115,000 km 6MT/2013 Jetta TDI 47,000 km 6MT

Last edited by JASONP; January 24th, 2010 at 09:02.
JASONP is offline   Reply With Quote
Old January 24th, 2010, 09:40   #19
Veteran Member
Join Date: Aug 2007
Location: Chapin, South Carolina, USA

I would inspect the cam, as I said in post #6.

I don't think you can adjust fueling on a BRM with VCDS.
DanG144 is offline   Reply With Quote
Old August 7th, 2010, 12:45   #20
Join Date: Jun 2009
Location: plattsburgh ny
TDI(s): 05.5

Pull egr out and check to see if the valve in the egr is open. Like a car valve it should be seated closed. If you can see light though the seat of the egr vavle thats it. Thats the causes of the black smoke. 3 bolts to pull and wiggle it out on a brm motor. Please check first. I just did one on my 2005.5 jetta brm. David
dropdeadsheds is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -7. The time now is 13:29.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.13065 seconds with 9 queries
[Output: 65.54 Kb. compressed to 57.65 Kb. by saving 7.90 Kb. (12.05%)]