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Old March 28th, 2008, 15:45   #2
EnthymematisHabilis's Avatar
Join Date: Feb 2008
Location: Lincoln, NE
Fuel Economy: 43mpg
Default Update: Injection Pump Head Unit

I got a reply from the folks at and they suggest that my injection pump head unit might be the problem, based on the symptoms/DTC code.

"We suspect problems with the injection pump
head unit. Contact a VW Dealer or Bosch Repair
Center for their assistance."

Does this sound reasonable? What sort of things go wrong with an injection pump? How hard is it to replace the head unit (and is it reasonable to upgrade to an 11mm or 12mm plunger if I get it replaced)?

I've read the thread on how the VE injector pump is supposed to work:
and the dieselgeek instructions for changing the head seal:
but these haven't given me a good idea of how hard it would be to replace the head unit...

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