I have an 8 valve 1991 GTI and I have searched and searched and tried almost everything that has been posted. I though it would be good if people could post their personal experiences with these two topics and how they fixed them since they usualy cover related items. Also many people post having these problems but they usualy don't post to say that they fixed it and how they fixed it. Lets all work together to end these problems for everyone once and for all.
These are all the things that I have replaced sometimes it seems as if I have fixed it but the problems just come back I am running out of stuff to replace.
New Vacum Lines.
New Coolant Sensor
Bosch Platnum+4 Plugs
New Fuel Injector Seals