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 MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

Reply
 
Thread Tools
Old August 28th, 2017, 15:08   #1
KillyMcGee
Veteran Member
 
Join Date: Apr 2015
Location: SE Arkansas
Default 01 TDI with 0 power, not limp mode

No codes
Replaced all vacuum lines
Swapped MAF sensor from my other TDI
Tested, then replaced VNT actuator because it wouldn't hold a vacuum
Removed snow screen
New fuel filter
New air filter

VCDS logs are attached. I can get whatever logs I need to troubleshoot this, just don't know what else to check.

Files:
https://ufile.io/fi8d0
https://ufile.io/8fmw2
https://ufile.io/4edjk
KillyMcGee is offline   Reply With Quote
Old August 28th, 2017, 15:23   #2
BobnOH
Veteran Member
 
Join Date: May 2004
Location: central Ohio
Fuel Economy: 50/45/35
Default

Does the actuator move the turbo vanes? When you first start the car, it should move roughly an inch, closing the vanes.
BobnOH is offline   Reply With Quote
Old August 28th, 2017, 16:32   #3
KillyMcGee
Veteran Member
 
Join Date: Apr 2015
Location: SE Arkansas
Default

Moves with a vacuum pump. Will check on startup
KillyMcGee is offline   Reply With Quote
Old September 13th, 2017, 14:32   #4
KillyMcGee
Veteran Member
 
Join Date: Apr 2015
Location: SE Arkansas
Default

Figured this out.

Finally gave a code for overboosting after replacing VNT actuator.

Took 15 minutes to adjust the VNT actuator arm length properly. Drove it and it def had more power than it did but was still very slow.

Turned EGR down in VCDS while I was at it.

IQ was on the upper limit of normal and VCDS already had it adjusted as far as it would allow. Did the hammer mod to get it in the 2 ballpark. MUCH much more power.

Updates to the car here: http://forums.tdiclub.com/showthread...84#post5327184
KillyMcGee is offline   Reply With Quote
Old September 13th, 2017, 16:01   #5
BobnOH
Veteran Member
 
Join Date: May 2004
Location: central Ohio
Fuel Economy: 50/45/35
Default

All s
Stock VE car likes it around 2.2. If you're fussy you can bump it up some, see if it improves anything.
Thanks for posting back!
Questions with answers is what makes a forum great. Most folks only need search.
BobnOH is offline   Reply With Quote
Old September 13th, 2017, 17:40   #6
UhOh
Veteran Member
 
UhOh's Avatar
 
Join Date: Dec 2014
Location: PNW
Default

Messing with EGR adaptation is mostly useless. Look around and you'll find a thread talking about this.
UhOh is offline   Reply With Quote
Old September 14th, 2017, 13:39   #7
Nevada_TDI
Veteran Member
 
Join Date: Aug 2008
Location: Reno, sort of...
Default

Due to emissions regulations, our ALH's come set very lean, so adding a bit of fuel really does make a positive difference in the way they run. Bigger nozzles are the usual way, but taking the IQ setting down a bit most often helps too.
__________________
_______________
2001 Jetta GL TDI, 35/15% Tint, Ventectomy, Catectomy, EGR-ectomy, Stage 4 TDTuning, PP764's, Stealth 17/56 Garrett, VCDS Hex+CAN, South Bend Daily Driver 2 Clutch, DG Short Shifter, Previous Diesel: 1983 Rabbit Diesel
Nevada_TDI is offline   Reply With Quote
Reply


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
Help in Owen sound m4k tdi limp mode,power loss jessejames Ontario 2 August 17th, 2016 12:05
tdi slow/loss of power limp mode jmchugh588 VW MKIV-A4 TDIs (VE and PD) 6 October 23rd, 2015 09:37
01 tdi turbo over boost/ limp mode maximus2388 TDI 101 0 April 10th, 2014 19:33
Loss of power 01 Jetta TDI, not limp mode. HELP wakdady TDI 101 6 June 13th, 2008 18:34
01 Jetta limp mode problem Jay Proctor VW MKIV-A4 TDIs (VE and PD) 6 November 22nd, 2006 12:44


All times are GMT -7. The time now is 01:21.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, 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 0.14384 seconds with 13 queries
[Output: 78.37 Kb. compressed to 67.99 Kb. by saving 10.38 Kb. (13.25%)]