Turbo underboost.

Runstuns

New member
Joined
May 14, 2017
Location
Vancouver
TDI
2003 wagon
Yeah here we go,
Turbo underboost. Still go'es into limp mode,
2003 jetta tdi wagon.
Iv'e done most everything else. All vac lines, Cleaned turbo vanes. new intercooler, new actuater, Wind's up nice but still underboost.
Seem's overboost is a lot easier to fix.Will deleting the EGR help
Thanks.
 
Last edited:

STDOUBT

Veteran Member
Joined
Jul 30, 2007
Location
Portland, effing Oregon
TDI
ALHx2
Deleting the EGR will not help.
How sure are you the new actuator is adjusted correctly?
In addition to vacuum lines, the connections on the charge air tract,
boost pipes-downpipe connections to and from the new IC?
You didn't mention intake manifold, but that's a side issue maybe.
Assuming you've read this:
http://forums.tdiclub.com/showthread.php?t=179589
...and knowing the codes stored could save you a bunch of time diagnosing.
 
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