My 84 1.9WB 7 pass van is running poorly.  It sort of jerks or bucks at most
speeds.  Still very driveable and not a huge power loss, but annoying.  It
was running like crap with horrible mileage, I replaced the o2 sensor and
fuel pressure regulator and it ran perfectly for a few weeks.  Now, this
jerky deal.  I notice no difference whether cold or hot.  It is most apparent
when just holding a steady slow speed such as in town driving.  I would
appreciate any list advice on this.  Thanks!  BTW this is a 4 speed van, not
auto if that matters.  It does not seem to be a driveline issue ( clutch axle
trans etc.).

Matt Brickell
Olathe, KS
00 VW New Beetle TDI GLS 5spd
84 VW Vanagon 1.9 Wolfsburg
83 VW Pickup LX Gas
73 VW 412 4-door fastback