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 > VW TDI Discussion Areas > TDI 101

TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

Thread Tools
Old October 26th, 2015, 20:45   #1
Veteran Member
Join Date: Oct 2012
Location: waupaca, WI
Fuel Economy: 40-42 with a lead foot.
Default ALH timing with non-VCDS scanner

i have did the timing belt on wifey's car last week and checked timing with snap-on MODIS and i just was hoping someone could explain the numbers it used... it doesnt use graph like VCDS.

The MODIS has what it calls "TDI dynamic timing tool" and it goes as follows:

First it asks you to verify that the car starts and idles.

Then asks if the car is up to operating temp and idling at approx 950rpm. (her car idles at ~900, if it matters)

you confirm again and it shows this:

Upper limit 77 ATDC
Actual value 75
Target value 57
Lower limit 37

so i assume that means i would be "at the top of the graph" on VCDS as is recommended but i wanted confirmation that snap-on's setup wasnt inverted for some reason. Hoping someone can fill me in on what these numbers mean so i know im actually at the right spot on the (non-existent) graph.
2003 Jetta TDI - 11mm IP, R520s and FMIC from the Red Death, HE221W (shooting for 26PSI), 1.8T pancake, DIY 3" OMI, still working on the DIY tune... its a learning process.
1996 Passat TDI - "Red Death" RETIRED. Had: Malone stg 1, 11mm IP, R520s, GT15/17 hybrid, FMIC, ETC
1997 Passat TDI wagon - Running donor or beater for sale, rough body
ketchupshirt88 is offline   Reply With Quote
Old October 27th, 2015, 07:52   #2
Veteran Member
jettawreck's Avatar
Join Date: Aug 2004
Location: Northern Minnesota-55744
Fuel Economy: 52+ average lifetime '01

I don't think the numbers you will get matter much, because when you graph the timing w/VCDS you first put the car into basic mode, which takes the ECU adjustments out of the picture. So unless you can do the basic mode, the timing numbers you get will be with the ECU making timing adjustments.
So many things affect timing.

2001 Jetta TDI GLS Silver-current driver (salvage)permanently vented-Panzer Plate-Sprint 520s-ScanGauge-CheckTemp III-ZeroStart heater-CAT 2 filter
2003 Jetta GLS Black w/leather (New Project Car) fixer-upper w/broken TB
2004 Cadillac SLS (wife's)
1999 GMC Suburban (It's MN-you need one)
197? Shibura 2cyl diesel 4WD tractor-loader/brushhog (very handy unit)
196? International TD340 Dozer-w/Drott 4-in-1 bucket/back ripper attachment
jettawreck is offline   Reply With Quote
Old October 27th, 2015, 09:57   #3
Vince Waldon
Veteran Member
Vince Waldon's Avatar
Join Date: Apr 2009
Location: Edmonton Alberta Canada

Originally Posted by jettawreck View Post
because when you graph the timing w/VCDS you first put the car into basic mode
Yup, this.
Vince Waldon Edmonton AB Canada

Note: The above is to the best of my knowledge- but at the end of the day simply interweb opinion, worth EXACTLY what you paid for it, and if used done so at your own risk.
Vince Waldon is online now   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

Similar Threads
Thread Thread Starter Forum Replies Last Post
who has a VCDS/scanner they'd like to use in Los Angeles? Gluca OBD Scanners 2 January 21st, 2015 17:18
Best OBDII gauge/scanner/VCDS gmcjetpilot VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) 11 June 9th, 2014 20:45
VCDS as non VAG OBD2 scanner jmarshall OBD Scanners 2 December 7th, 2013 02:10
Where to buy a vcds scanner tool? bruca003 Ontario 2 March 25th, 2012 12:40
Metalnerd ALH Timing Belt Tools + RossTech VCDS for Rent TWeatherford Private TDI Items for Sale/Wanted 8 July 22nd, 2011 08:39

All times are GMT -7. The time now is 09:35.

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 0.15563 seconds with 11 queries
[Output: 60.63 Kb. compressed to 55.11 Kb. by saving 5.52 Kb. (9.11%)]