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3L TDI / CATA / CNRB - VCDS chain stretch

24140 Views 231 Replies 47 Participants Last post by  SaVAGeSoot
This post might just break this forum, as just about anyone I've ever met with a 3L TDI wants some sort of ability to check the potential doom of their timing chain skipping.

Edit:
Since there aren't too many users reporting values at the moment, I will keep updating the table for now to provide an easy to read reference.
UserEngineOdometer (k)Adaptation (º)START Rattle (Y/N)OCI (k)
SaVAGeSootCNRB93-4.15N10
buckwheatCNRB119-4.7Y10, 6.7
ToolmanJohnCNRB117-3.82N10
ATSToddCNRB159-4.92N10
SuprollaCATA152-1.5N7.5
DashParrCNRB209-2.97??
josiah47CATA120-2.3N10
ValveCoverGasketCATA126-2.07N10
Tyler ScalzoCNRB102-2.9?7.5
maintenance247CNRB119-2.59N7.5
yeti007CVVA59-3.86N8.5
BrendanmCRCA198-4.6Y10
iSagenCASA109-1.85N10
VaNSqLCATA135-0.86N6.2
GoldsburgCNRB137-5.0Y5
werdnaCNRB127-3.8N5
alfissimoCNRB83-4.48N?
renjean1CNRB157-4.83??
Lance_1CNRB230-5.16Y~10
20bugsysCATA104-4.15Y?
mickblouin84CNRB186-15.1N?
DEZL_PWRCNRB55-1.6N10
SceepCNRB151-5.12N10
VelochCRCA127-3.8Y10
nicholaschase29CNRB145-4.55Y10
buyingconstant7CNRB112-1.21N6.2
keaton85CNRB197-4.55Y?
Thumper3CNRB99-2.31N4.5
MerunrunCNRB41-2.6N?
jatan231CRCA107-1.65Y?
Dannyboy485CNRB130-2.29N10
buyingconstant7CNRB180-3.96?10
drjonezCATA160-2.22Y10
WeekevCRCA75-1.5Y6.2
77 K20CATA198-3.19N8.5
SlowDownCATA150-5.08Y?
YarekaCNRB106-3.16??
YarekaCNRB326-6.04??
The following information is what I've learned from reading way too many posts on the subject.

I strongly suggest that anyone with the ability to post their own details contributes to this so that we can come up with some consensus of potential feasibility.

Here are my values.
CNRB with ~150k (km)
I don't have any noticeable rattle or noise concerns.
You want your engine warmish fully warmed up before taking the reading.
Address 01: Engine (7P0 907 401 K)

19:10:21
IDE00021 Engine RPM 713 /min
IDE00025 Coolant temperature 61º C
IDE00182 Camshaft adaptation intake bank 1: phase position -4.15º
IDE00196 Engine oil temperature 59.1º C
You're interested in the adaptation value. Ideally, it's zero, but as your chains wear, they will get noisy and once you get around -8 to -9 you can expect a failure. At that point you should have a significant amount of rattle, especially on cold startups.

People with short OCIs and quiet chains report being around the -5 value at about 100-120k miles.

Post your details and let's see if there's any truth to these rumors!
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@werdna
Added

Our "dataset" is slowly growing, but unfortunately, there's very few contributors compared to what I was expecting.
Oh well, I tried, and it's still better than nothing I guess.
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just discovered that , Ill do it next week
This post might just break this forum, as just about anyone I've ever met with a 3L TDI wants some sort of ability to check the potential doom of their timing chain skipping.

Edit:
Since there aren't too many users reporting values at the moment, I will keep updating the table for now to provide an easy to read reference.


The following information is what I've learned from reading way too many posts on the subject.

I strongly suggest that anyone with the ability to post their own details contributes to this so that we can come up with some consensus of potential feasibility.

Here are my values.
CNRB with ~150k (km)
I don't have any noticeable rattle or noise concerns.
You want your engine warmish fully warmed up before taking the reading.


You're interested in the adaptation value. Ideally, it's zero, but as your chains wear, they will get noisy and once you get around -8 to -9 you can expect a failure. At that point you should have a significant amount of rattle, especially on cold startups.

People with short OCIs and quiet chains report being around the -5 value at about 100-120k miles.

Post your details and let's see if there's any truth to these rumors!

Wednesday,19,October,2022,09:35:56:02226
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8 x64
VCDS Version: 22.9.0.0 (x64)
Data version: 20220830 DS341.0
www.Ross-Tech.com


VIN: WVGEP9BP1GD001897 License Plate: 999999
Mileage: 83368 Repair Order:



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine (7P1 907 401 C)

09:35:40
IDE00021 Engine RPM 760 /min
IDE00025 Coolant temperature 89 °C
IDE00182 Camshaft adaptation intake bank 1: phase position -4.48 °
IDE00196 Engine oil temperature 88.2 °C
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Thanks. No idle rattle. Only occasional start of noise for 2-4 seconds.
I have -4.83, but I forget to take the engin code
its a 2013 tdi with 235k km
I have -4.83, but I forget to take the engin code
its a 2013 tdi with 235k km
That's fine... you have a CNRB due to that year.
I have -4.83, but I forget to take the engin code
its a 2013 tdi with 235k km
How often do you change your oil?
Do you have chain rattle?
How often do you change your oil?
Do you have chain rattle?
Does he use proper spec vw50x oil?
2014 with just over 370k km. idling at 759 rpm, 91c coolant temp adaptation was -5.16. I am the original owner, 15k km oil change interval typical with an occasional shortening of interval if I felt the conditions dictated, or the timing was convenient to get it done earlier. I have looked after the majority of the service myself. I ran castrol oil and oem filters to about 300k, since then have been using mobil 507 spec oil and wix filters. I have chain rattle for about a second on warm starts only- the car has been off for an hour or so. If it hasn't done that since new, it was shortly after that it started. I dont remember it not doing it.
@Lance_1 added.

Everyone else, I've changed the column to START rattle vs IDLE rattle since I don't think any of us have constant idle rattle as of yet.
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2012 7P with CATA engine. The engine starts with chain rattle only after sitting for a very long time. For instance, we went on a 2.5 week vacation and the car sat the whole time. Under normal conditions it's quiet and has given me no issues.
104,000 miles
760 rpm
79 deg C coolant temp
79.1 oil temp
Camshaft adaptation fluctuates between 3.8 - 4.5 at idle.
Added.
I'm not sure why people find it so difficult to provide the few details that are being tracked following the same format, etc.
Tell me the basics, and then add whatever else you want to it. Don't give me ranges, or only some of the 5 parameters that we're tracking.... it's pretty simple.
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i have 2 touareg,

2013 CNRB 300 000km rattle randomly warm/cold startup: Camshaft was -15.1 degres (run prettey good 😲)

2011 CATA 270 000KM with right camshaft head tensioner and right camshaft chain brand new no rattle -1.01 degres
i have 2 touareg,

2013 CNRB 300 000km rattle randomly warm/cold startup: Camshaft was -15.1 degres (run prettey good 😲)

2011 CATA 270 000KM with right camshaft head tensioner and right camshaft chain brand new no rattle -1.01 degres
How can there be such a massive difference between your value and all other data reported by the rest?
How can there be such a massive difference between your value and all other data reported by the rest?
That's my question too! I dont know what is the real limitation before failure??
I own this touareg from 5 years ago and 5 years of rattle randomly on startup cold/warm
Vertebrate World Mammal Font Tints and shades
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  • Wow
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That's crazy! Is that at idle and fully warmed up?
That's crazy! Is that at idle and fully warmed up?
yes, i have read it cold too and its has the same reading as fully warmed at idle.
yes, i have read it cold too and its has the same reading as fully warmed at idle.
Super weird.... added your value to the table even though it seems to be way our of whack compared to the rest of the data.
Looks like we don't have to worry much. LOL
  • Haha
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