2002 Jetta wagon tdi Boost issues.

R

Runstuns

New member
Joined
May 14, 2017
Location
Vancouver
TDI
2003 wagon
Hello all, I've done all the research i can.
Used to get under boost code. so cleaned out the turbo, changed all the vac lines. Finally got boost. Then only a glow plug code so fixed it. Here's the problem. After any aggresive acceleration i lose boost so i shunt into neutral turn ignition off then on again into drive and turbo boost is back. Is it still just a vac leak or am i losing it?
All help gratefully received.
 
Vince Waldon

Vince Waldon

Top Post Dawg
Joined
Apr 25, 2009
Location
Edmonton AB Canada
TDI
2001 ALH Jetta, 2003 ALH Wagon, 2005 BEW Wagon
Limp mode...car detects a boost issue and shuts off the turbo to prevent damage. Power-cycling the ECU makes it forget about the problem... until it happens again. :)

Lots of potential causes.

Great scientific approach to troubleshooting can be found in the signature of member Canadian Grizzly.

You'll need a hand-operated vacuum pump to test for proper operation of the turbo actuator, and possibly a good VW-specific scanner like VCDS to plot requested boost vs. actual.
 
H

hugho

Active member
Joined
Feb 17, 2018
Location
NW wyoming
TDI
red 2002 vw Jetta wagon 250K miles, MT
Vince Waldon said:
Limp mode...car detects a boost issue and shuts off the turbo to prevent damage. Power-cycling the ECU makes it forget about the problem... until it happens again. :)

Lots of potential causes.

Great scientific approach to troubleshooting can be found in the signature of member Canadian Grizzly.

You'll need a hand-operated vacuum pump to test for proper operation of the turbo actuator, and possibly a good VW-specific scanner like VCDS to plot requested boost vs. actual.
Click to expand...
How to I find that post by Canadian Grizzly. I tried to no avail to find his post.
 
You must log in or register to reply here.
Top