[Vwdiesel] Vibration in 2001 Jetta Diesel

[McCanless, James]

I also have a 2001 Jetta Diesel with 107,000 miles on it. I have
experienced the same thing since about 70,000 miles. I have never
experienced it to the point of being severe. Other than that all things
are similar except mileage. My best 52, worst 42. Yes I hammer it. Yes I
drive 75 - 85 a lot.

I did change tire size to bring the speedo in closer alignment to being
accurate. I put 205/65-15 on it. According to GPS it still reads about 1
mph fast. It is better than the 4-5 mph fast from the factory. 

I have ran synthetics the whole time. Amsoil, Castrol, Rotella T, not
much different. For about 3,000 miles the Amsoil series 3000 5W30 was a
little quieter. But it is much higher than the 15W40 HD Diesel. I saw a
slight increase with the series 3000 over the HD Diesel oil. 

I hope I never experience a severe vibration.

Troy

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]
On Behalf Of RedMerk at aol.com
Sent: Thursday, October 21, 2004 10:41 AM
To: vwdiesel at vwfans.com
Subject: [Vwdiesel] Vibration in 2001 Jetta Diesel


To All:

I own a 2001 VW Jetta Diesel with 151,000 miles on it.  I drive
approximately 
1300 miles each week as part of my job.  Now for the problem:

I have an intermittent vibration in the drive train or engine somewhere
that 
at times is quite severe.  To give some idea of how intermittent, this
past 
Tuesday evening, the vibration was quite noticeable from Columbus, Ohio
to 
Dayton, Ohio.  After that, all the way to about 50 miles east of Kansas
City, 
absolutely nothing but a very smooth ride.  Then just a small amount of
vibration 
for about two miles, then nothing again.

The dealer and a local independent mechanic who is very familiar with
VW's 
have worked on this for the last 90,000 to 100,000 miles and found
nothing to 
cause the problem.  The tires have been checked and rotated numerous
times, and 
balanced numerous times.  The tires have been changed once and are about

20,000 from being changed again.  There is no abnormal wear pattern on
the tires.  

The computer checks of the engine indicate no abnormalities in that
area.  
All maintenance has been performed per the manufacturer's
recommendations to 
include oil, filter, tire rotation, and belt replacements.  Fuel mileage
varies 
depending on A/C usage and loading from 47 to 55 miles per gallon.  The
highest 
ever obtained was 58, and the lowest or worst was 44.  The loading of
the 
vehicle seems to have no affect on whether or not the vehicle vibrates.
Wind 
direction and "brand" of fuel seem to have the most effect on the
mileage 
obtained.  Biodiesel gets me the worst mileage overall.  I cannot state
with accuracy 
whether or not the difference in fuel "brand" has any effect on the
vibration 
or not, but at times, the frequency seems to have been worse after
fueling at 
a "cut-rate" truck stop.  That is something that I am watching closely
at the 
moment.

The vibration will sometimes come on at odd intervals of maybe 10 to 20
miles 
and sometimes as noted above, there was nearly 600 miles between the 
vibration episodes.  The problem started at between 50,000 and 60,000
miles.  This 
vibration is quite noticeable in the steering wheel.

If anyone has any ideas, I would sure appreciate hearing from you.

Emmit Williams
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