Now its not a criticism but as its your first post but you could add a but more detail in your User control panel about your car. Even better you can add it to your signature rather than a 1999 Golf as that covers a lot of models.
They do a 1.9D TDI PD, 2.0D TDI PD and a 2.0 TDI CR which one is your, the engine code would help.
VW TDI forum, Audi, Porsche, and Chevy Cruze Diesel forum
A forum community dedicated to Audi, Volkswagen, Porsche, and all turbo diesel owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, TDI, maintenance, and more!