www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2014 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You



Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW B5 Passat TDIs

VW B5 Passat TDIs This is a general discussion about B5 Passat(>98 (2004-2005 in North America)). Non TDI related postings will be moved or removed.

Reply
 
Thread Tools
Old February 24th, 2011, 11:23   #1
gtalum
Newbie
 
Join Date: Mar 2004
Location: Sarasota, FL
TDI(s): none yet
Default 2005 Passat TDI - Rough Idle Problem

I have a problem, and no local mechanics seem to be able to find it. Our 2005 Passat TDI, with 155,000 miles on it, has started to idle very rough in one specific circumstance: at a stop, brakes applied, in Drive or Reverse gear. When I release the brakes, it smooths out. When I put it in Park or Neutral, it smooths out. It seems to drive fine, no troubles at all otherwise. Any ideas what could cause this issue?

The car has always vibrated, obviously since it's a TDI, but now it feels like it's shaking itself apart just in this specific situation. Any help would be greatly appreciated.
gtalum is offline   Reply With Quote
Old February 24th, 2011, 11:38   #2
Dunno513
Veteran Member
 
Dunno513's Avatar
 
Join Date: Feb 2006
Location: Mirror Lake, NH
Fuel Economy: 44.5 lifetime
Default

Dmf Or motor mounts would be my first suspects
Dunno513 is offline   Reply With Quote
Old February 24th, 2011, 11:46   #3
johnboy00
Veteran Member
 
Join Date: Jun 2000
Location: Bridgewater,Ma.,USA
Default

Have the axles ever been replaced? Cheap Chinessium axles cause this problem all the time.
__________________
John


2005 Passat Wagon
1999.5 Golf
johnboy00 is offline   Reply With Quote
Old February 24th, 2011, 11:53   #4
aja8888
Veteran Member
 
aja8888's Avatar
 
Join Date: Dec 2007
Location: Texas..I work in Oil & Gas...
Fuel Economy: About as good as it gets!
Default

Quote:
Originally Posted by Dunno513 View Post
Dmf Or motor mounts would be my first suspects
No DMF in this car (ZF trans).
__________________
Quote:
Originally Posted by Big Mike View Post
........"Everybody has a plan until they get punched in the face." -- philosopher Mike Tyson.
2014 Passat SE TDI DSG, Opera Red Metallic, Cornsilk interior
aja8888 is offline   Reply With Quote
Old February 24th, 2011, 12:02   #5
gtalum
Newbie
 
Join Date: Mar 2004
Location: Sarasota, FL
TDI(s): none yet
Default

I'll see if I can take a look at the engine mounts, though I had them replaced once under extended warranty at around 95,000 miles.

I've read about failed CV joints possibly causing this issue too, is that a real possibility?

It seems weird that it's ONLY occurring in one specific circumstance: stopped and in gear.
gtalum is offline   Reply With Quote
Old February 24th, 2011, 12:15   #6
aja8888
Veteran Member
 
aja8888's Avatar
 
Join Date: Dec 2007
Location: Texas..I work in Oil & Gas...
Fuel Economy: About as good as it gets!
Default

If you see red colored stains on the two side motor mounts, they are leaking. There are upgraded motor mounts now available.

If you have bad CV joints (or had them replaced with cheepo Chinese ones), yes, they can cause vibration.

A goofy alternator pulley can make the engine vibrate also.

A chain drive balance shaft assembly that's pretty worn can add to engine vibration.

There is a front engine mount attached to the front cross member that will cause the engine to "lift" if worn and you put the car in gear with your foot on the brake. That could add to the vibration if its worn.
__________________
Quote:
Originally Posted by Big Mike View Post
........"Everybody has a plan until they get punched in the face." -- philosopher Mike Tyson.
2014 Passat SE TDI DSG, Opera Red Metallic, Cornsilk interior
aja8888 is offline   Reply With Quote
Old February 24th, 2011, 15:28   #7
thundershorts
Veteran Member
Default

other than the above menyioned areas to check, have you had the new software update/recall done? it may not fix your vib but it may help and its free.
__________________
"You can't argue with a fool..."
thundershorts is offline   Reply With Quote
Old February 24th, 2011, 19:39   #8
leobg
Veteran Member
 
Join Date: Jun 2004
Location: Toronto, ON
Fuel Economy: 39/27/23 U.S. mpg 6/8.7/10 L/100km
Default

I vote "alternator pulley clutch stuck". Check that first if you haven't already.
__________________
leobg
===================================
2004 Passat GLS TDI (unchained )
leobg is offline   Reply With Quote
Old February 25th, 2011, 04:25   #9
s4phillips
Veteran Member
 
s4phillips's Avatar
 
Join Date: Jul 2005
Location: Live in d/FW, TX. Transplanted from the Pacific Northwet
Default

...add worn cam to the bottom of the list of things to check. The items already listed should be checked before getting to the cam.
__________________
Perform scheduled maintenance; drive more, worry less; balance shaft module; drive more, worry less; torque converter; drive more, worry less...
2005 Passat Wagon TDI w/gear driven buzz reducer and lubricant circulator
2002 Beetle TDI
2003 DL1000K3
s4phillips is offline   Reply With Quote
Old February 25th, 2011, 04:37   #10
JFettig
 
JFettig's Avatar
 
Join Date: Aug 2010
Location: St. Cloud, MN
TDI(s): B5 Passat
Default

I have ridden in a B5.5 that had this symptom that he describes above, when shifted into neutral, the vibrations went away. It wasn't like it was anything the engine or mounts were doing, the trans seemed to invoke it.

Jon
__________________
Malone Tuning Dealer Tuning 1996 to present, including Common Rail and DSG!
1998 B5 Passat TDI Compound Turbos
2009 JSW Stage 3 196whp so far
ECU Socketing
DIY injector calibration http://forums.tdiclub.com/showthread.php?t=383324
JFettig is offline   Reply With Quote
Old February 25th, 2011, 05:38   #11
sirpuddingfoot
Veteran Member
 
sirpuddingfoot's Avatar
 
Join Date: May 2010
Location: Saint Paul, MN
Default

The key is that vibration is when you are in gear, using the brakes to keep the car from moving. I suspect it may be a sign of the torque converter's eventual demise. I have noticed that our B5.5 will occasionally not immediately shift fully into gear, as if the torque converter gets stuck half way, then eventually realizes its mistake and clicks on all the way. The really strange part of that is that it doesn't act like its slipping, but more like it is pretending to have an extra gear between 2nd and 3rd and another between 3rd and 4th. I also wonder if perhaps the Chain Drive BSM is slightly out of phase, since it was added to the engine for the precise reason of eliminating that kind of vibration from the automatic transmission, or so I gather from reading.
__________________
'05 Passat TDI - Ventectomy - BSM Delete - Nicktane Head with 2u Cat Fuel Filter - MaloneTuning Stage 1.5
'05 Mk4 Jetta TDI - Ventectomy - DG FMJ Panzerplate - HR Sport Springs and 28mm Rear Sway Bar - TT LCA Bushings -Nicktane 1u Fuel Filter - MaloneTuning Stage 1.5 ...for now
sirpuddingfoot is offline   Reply With Quote
Old February 25th, 2011, 05:55   #12
gtalum
Newbie
 
Join Date: Mar 2004
Location: Sarasota, FL
TDI(s): none yet
Default

Thanks for all the suggestions. I'll be taking a look this weekend.

Just to add to the mystery, now I notice it's shimmying under hard acceleration from about 30-40 mph.

I haven't noticed any problems in the transmission shifting gears, as it shifts smoothly and at the right times so far. I'll try to pay really close attention to that when I drive home tonight to be sure.

Last edited by gtalum; February 25th, 2011 at 06:00.
gtalum is offline   Reply With Quote
Old February 25th, 2011, 06:08   #13
thundershorts
Veteran Member
Default

that would lead me to axles. get the recall flash just the same
__________________
"You can't argue with a fool..."
thundershorts is offline   Reply With Quote
Old February 25th, 2011, 10:01   #14
ekkoh99
Veteran Member
 
Join Date: Oct 2001
Location: Wilmette, il
TDI(s): 09 JSW
Default

I had severe vibrations until the serpentine tensioner belt pulley went south.
__________________
2009 Jetta WGN TDI, DSG
2005 Passat WGN TDI "Balance shaft upgrade by OilHammer on 3/27/2009" NGK-09 plugs in Jan 2011
ekkoh99 is offline   Reply With Quote
Old February 25th, 2011, 14:11   #15
thundershorts
Veteran Member
Default

[QUOTE=gtalum;3305407]Thanks for all the suggestions. I'll be taking a look this weekend.

Just to add to the mystery, now I notice it's shimmying under hard acceleration from about 30-40 mph.

belts or alt pulley don't cause shimmying, axles are the culprit
__________________
"You can't argue with a fool..."
thundershorts 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
Low pwr, rough idle, sputtering in 2005 PD Zampano77 TDI 101 14 January 3rd, 2010 17:15
Rough Idle Problem with Auto trans, ALH and mods FirstOrbit84 TDI 101 1 November 11th, 2008 19:09
Rough Idle and Quantity adjuster problem escore TDI 101 14 August 15th, 2007 17:21
rough idle problem mimpett VW MKIV-A4 TDIs (VE and PD) 17 March 4th, 2005 16:24
Rough idle problem okcjack VW MKIV-A4 TDIs (VE and PD) 18 February 4th, 2004 17:08


All times are GMT -7. The time now is 17:14.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2014
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 - 2013, All Rights Reserved
Page generated in 0.17521 seconds with 10 queries
[Output: 125.32 Kb. compressed to 103.96 Kb. by saving 21.36 Kb. (17.04%)]