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 > 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.

Reply
 
Thread Tools
Old January 25th, 2010, 12:27   #16
NateTDI
Veteran Member
 
Join Date: Dec 2004
Location: OH
Fuel Economy: 2000 Jetta, low 50's
Default

Dumb question alert!!!!

Why would one want to do the hammer mod?
NateTDI is offline   Reply With Quote
Old January 25th, 2010, 12:55   #17
NB_TDi
 
NB_TDi's Avatar
 
Join Date: Mar 2008
Location: NB, Canada █♣█
Fuel Economy: Best 56MPG
Default

If you're IQ is out of spec, you want to do this. This will slove most cases of slow down shudder.
__________________

1994 Jetta 1.8 2000 Jetta TDI, 2005 Jetta 2.0, 2010 Tiguan 2.0 TFSI 4Motion, 2014 Jetta 2.0
Everytime you post a picture with PhotoBucket, a TDI gets below 30MPG.
NB_TDi is offline   Reply With Quote
Old January 25th, 2010, 21:31   #18
Ausgezeichnet TDi
 
Ausgezeichnet TDi's Avatar
 
Join Date: Mar 2009
Location: San Jose, CA
TDI(s): None
Default

Great writeup NB, I've seen this post awhile ago thinking that I'd never have to do this, and I think I just may....anyone ever heard of an idle shudder (not slow down)?

Here's the situation...got the 99.5 Jetta in March with 100k mi, has had an idle "shudder" ever since. When I say shudder I mean stuttering. I get excessive shudder almost like a misfire on a gasser. I can come to a stop, engine shudders, keeps shuddering and sputtering until I "blip" the throttle then it smooths out for whatever period of time, then it will go back into throwing a fit. Timing belt was done by a trusted guru shortly after I purchased it, and I had a code for quantity adjuster and my timing was jumping all over the place so I ended up putting in a high quality rebuild from DFIS at the recommendation of the trustworthy guru. Shortly after I installed balanced injectors with Sprint 520's from a very reputable vendor through this site. Together they made the shudder 1/3 as intense as it was, but its still there.

I had a fellow member check my IQ when up to temp, and we adjusted it up to 4.0 as it will not go any higher...any lower and it shakes uncontrollably...alas I think this is my next step (besides buying VCDS once and for all!!). Does it seem odd that even with a new pump I can't get the IQ setting higher than 4? Is this another one of those weird 99.5 glitches?

I didn't intend to hijack this thread and if so I apologize, just wanted to request some more experienced brainpower! Thanks! -AGTDI
__________________
R.I.P. 2003 Bora Estate TDI -
2006 Volvo V70R
Ausgezeichnet TDi is offline   Reply With Quote
Old January 26th, 2010, 03:29   #19
NB_TDi
 
NB_TDi's Avatar
 
Join Date: Mar 2008
Location: NB, Canada █♣█
Fuel Economy: Best 56MPG
Default

VCDS cannot adjust very far, actually it's the pump. That's when you perform this mod. You'd reset your settings via VCDS and then do this mod. Then you can fine tune it with VCDS.

I had idle and slowdown shudder too.
__________________

1994 Jetta 1.8 2000 Jetta TDI, 2005 Jetta 2.0, 2010 Tiguan 2.0 TFSI 4Motion, 2014 Jetta 2.0
Everytime you post a picture with PhotoBucket, a TDI gets below 30MPG.
NB_TDi is offline   Reply With Quote
Old September 11th, 2011, 17:42   #20
VeeDubTDI
Good Ol' Boy
TDIClub Enthusiast
 
VeeDubTDI's Avatar
 
Join Date: Jul 2000
Location: Springfield, VA
Fuel Economy: see signature
Default

Gonna make this a sticky for a little while. Great How-To thread!
__________________


Trusted TDI Mechanics Map || TDIClub Chat
VeeDubTDI is offline   Reply With Quote
Old September 16th, 2011, 15:57   #21
NB_TDi
 
NB_TDi's Avatar
 
Join Date: Mar 2008
Location: NB, Canada █♣█
Fuel Economy: Best 56MPG
Default

Sweet!

Thanks!
__________________

1994 Jetta 1.8 2000 Jetta TDI, 2005 Jetta 2.0, 2010 Tiguan 2.0 TFSI 4Motion, 2014 Jetta 2.0
Everytime you post a picture with PhotoBucket, a TDI gets below 30MPG.
NB_TDi is offline   Reply With Quote
Old September 18th, 2011, 16:30   #22
VeeDubTDI
Good Ol' Boy
TDIClub Enthusiast
 
VeeDubTDI's Avatar
 
Join Date: Jul 2000
Location: Springfield, VA
Fuel Economy: see signature
Default

+400 views in a week. Not bad!
__________________


Trusted TDI Mechanics Map || TDIClub Chat
VeeDubTDI is offline   Reply With Quote
Old September 18th, 2011, 16:33   #23
thebigarniedog
Master of the Obvious
 
thebigarniedog's Avatar
 
Join Date: Oct 2007
Location: Fail Command (Central Ohio)
Default

Quote:
Originally Posted by VeeDubTDI View Post
+400 views in a week. Not bad!

It's the title promising cake that is the draw .
__________________
When interviewed about why no diesel for the new F150, Ford responded to effect that diesel makes no sense in the 1/2 ton market. That brilliance should be repeated in every Ram 1500 eco-diesel commercial.

OCD TDICLUB MEMBER # 1
thebigarniedog is offline   Reply With Quote
Old October 23rd, 2011, 21:56   #24
Rawlins
Veteran Member
 
Rawlins's Avatar
 
Join Date: Apr 2008
Location: Winnipeg
Default

What, no cake? Fooled again. Nice write up. Will be doing this soon
Rawlins is offline   Reply With Quote
Old October 26th, 2011, 09:00   #25
kooyajerms
grocery getter
 
kooyajerms's Avatar
 
Join Date: May 2004
Location: Pomona, Southern California
Default

NB, why don't you loosen the anti-tammper bolt in your method? I was scratching my head till Matthew and CCBB posted the more familiar style of hammer modding. Thought I was crazy.
kooyajerms is offline   Reply With Quote
Old October 31st, 2011, 17:00   #26
rventerprises
Member
 
Join Date: Mar 2011
Location: NW OH
TDI(s): '12 Jetta
Default

I can't get a consistent reading for my IQ. I get it to 3.0, then drive it, it has absolutely no power and dies when I push the clutch in. After a hard restart the IQ is at 8 or 9 and slowly drops. I just can't get it dialed in. When I crack the torx screws loose, I get a bunch of air in my fuel line, if I get a decent IQ it starts idling really rough when I tighten the screws. Any suggestions before this thing visits the bottom of the local reservoir?
rventerprises is offline   Reply With Quote
Old October 31st, 2011, 17:28   #27
Ski in NC
Veteran Member
 
Join Date: Jul 2008
Location: Wilmington, NC USA
Fuel Economy: 48-52 typical
Default

Sounds like an air getting into the fuel problem, fuel restriction but not an IQ problem. As I understand it, if iq goes up to 8 or 9 as you describe, that is the QA moving the collar to compensate for the root problem. Any signs of fuel leaks on your injection pump?
__________________
2001 Jetta TDI 5sp Stock 201k mi
1981 Rabbit IDI 4sp Sold at 339k mi
1990 S-10 4.3 4wd 5sp 154k mi
1986 VW Pathfinder 1.6 45hp Marine 4700 Hrs
2001 Cummins 8.3 420hp Marine 1660Hrs..REFIT DONE!!
Ski in NC is offline   Reply With Quote
Old October 31st, 2011, 20:50   #28
NB_TDi
 
NB_TDi's Avatar
 
Join Date: Mar 2008
Location: NB, Canada █♣█
Fuel Economy: Best 56MPG
Default

Quote:
Originally Posted by kooyajerms View Post
NB, why don't you loosen the anti-tammper bolt in your method? I was scratching my head till Matthew and CCBB posted the more familiar style of hammer modding. Thought I was crazy.
Mainly because in my situation, and the others I've fixed, it's barely out. If it was completely off due to some catastrophic failure, then yeah maybe.

Sorry about the cake. Perhaps you'd like some conversion gel?

__________________

1994 Jetta 1.8 2000 Jetta TDI, 2005 Jetta 2.0, 2010 Tiguan 2.0 TFSI 4Motion, 2014 Jetta 2.0
Everytime you post a picture with PhotoBucket, a TDI gets below 30MPG.
NB_TDi is offline   Reply With Quote
Old November 1st, 2011, 05:26   #29
bowelder
Member
 
Join Date: Oct 2011
Location: south carolina
Default

as a newbie (approx 1 month) in the club, I still don't know what most of you all are talking about most of the time. But i'm reading and learning daily. My question is, what is IQ and is this something i should be looking at with my 2000 Golf ALH engine?

all these abbreviations are rough on the newbies
bowelder is offline   Reply With Quote
Old November 1st, 2011, 06:33   #30
rventerprises
Member
 
Join Date: Mar 2011
Location: NW OH
TDI(s): '12 Jetta
Default

I am a newbie too and I have been scouring threads for 3 days trying to find a solution. I see massive amounts of air in my clear inlet line but only at certain IQ adjustments. It could just be coincidence I see the air when I loosen the screws but sometimes I see it after I tighten them. The only thing I can think of is I read something about some check valves I could have gotten stuck when I bled the air out the first time. I have a mity-vac I put it on the return to the right of the pump the first time and thought I got it. Yesterday I put a new fuel filter on. I thought I read about a check valve at the tank so I put the mity-vac to pressure to try to reseat it before sucking the air out. Then pinched the returns on the filter before sucking the air out of the filter. Filter was filled before installing. Where else can air get in?
rventerprises 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


All times are GMT -7. The time now is 06:37.


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 0.16030 seconds with 9 queries
[Output: 127.56 Kb. compressed to 106.33 Kb. by saving 21.24 Kb. (16.65%)]