www.tdiclub.com

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 Touareg TDIs

VW Touareg TDIs This is a general discussion about Touareg TDIs. Non TDI related postings will be moved or removed.

Reply
 
Thread Tools
Old January 14th, 2019, 08:39   #1
Jmdiag
Newbie
 
Join Date: Jan 2019
Location: Kent
Default 2004 touareg alternator output?

Hi all, Im after some technical help, i have a 2004 touareg 3l v6 tdi bks, im having issues with slow cranking, i replaced the battery a few weeks ago, and then it started happening again, ive checked charging voltage on a new battery and im getting around 13.9v however its the current output that concerns me, with an amp meter im charging at 13 amps at peak, which slowly drops to 2amps even though the battery needs charge i.e. its cca should be 750 and it was 650 before starting. Makes no difference on load/off load, idle or 3k rpm, nothing changes. Im suspecting the alternator however the dfm signal is what im unsure about, does the alternator provide an output to the ecu from the dfm pin or does the ecu tell the alternator how much current is required? Ive tried voltage drop tests, all my wiring is fine. Any advice would be greatly appreciated
Jmdiag is offline   Reply With Quote
Old January 15th, 2019, 14:34   #2
Ol'Rattler
Veteran Member
 
Ol'Rattler's Avatar
 
Join Date: Jul 2007
Location: Marysville, Wa.
Default

What country are you in? Something doesn't sound right with the brush/regulator assembly or perhaps the clutched pulley on your alternator is slipping.

How many miles on your Treq? On my N/A Jetta, I polished the slip rings and replaced the brush/regulator assembly at 185 K miles. The brushes were not to the point of arcing yet so I didn't have to replace the slip rings, just polished the grooves out of them.
The bearings were fine and the clutched pulley with about 100K miles on it was fine as well.
__________________
2006 Jetta TDI
5 speed, Manufactured 06/06
DC stage 1 SMF Clutch
Draw-Tite hitch
Dash Tray
Blue tint aspherical mirrors
Euro Cupholder
Euro Light Switch
2nd grocery hook
VCDS Hacks: DRL Disabled-Seatbelt Chime Disabled-Key fob Power Windows
Adjusted Cam to Crank Timing
Ol'Rattler is offline   Reply With Quote
Old January 16th, 2019, 03:17   #3
Jmdiag
Newbie
 
Join Date: Jan 2019
Location: Kent
Default

In the uk, i wasnt sure if it had a clutched pulley, its a 190a water cooled, so im reluctant to repair it myself, new one quoted at 400 which isnt horrendous however if it turns out the engine ecu isnt telling it to output enough amps its a waste of money, thats my concern, im not sure what controls the load output
Jmdiag is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 2 (0 members and 2 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
Alternator output fluctuating AndyBees TDI 101 16 December 11th, 2018 16:27
High Output alternator fouillard13 TDI 101 25 December 27th, 2015 18:01
Lower the output of the alternator? Wankel7 TDI Fuel Economy 57 March 19th, 2015 19:20
Alternator Output? willjayc TDI 101 3 February 15th, 2007 15:39
Alternator Output? LIVE4SPD Upgrades (non TDI Engine related) 8 April 23rd, 2002 01:39


All times are GMT -7. The time now is 07:12.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, 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 0.12951 seconds with 12 queries
[Output: 58.24 Kb. compressed to 52.98 Kb. by saving 5.26 Kb. (9.04%)]