Test sequence
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Passat, 1997 Volkswagen Jetta, and 1996 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect vacuum hose from EGR valve.
- Connect US8026 hand vacuum pump to EGR valve.
- Operate vacuum pump.
- The diaphragm rod must move toward vacuum connection. Observe diaphragm rod via opening (arrow)
- Disconnect US8026 hand vacuum pump from EGR valve.
- Valve must audibly close (diaphragm rod moves toward intake manifold)