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 exhaust gas recirculation valve.
- Connect US8026 hand vacuum pump to EGR valve.
- Operate hand pump.
- The diaphragm rod must move toward vacuum connection. Observe membrane rod through opening (arrow)
- Disconnect US8026 hand vacuum pump from EGR valve.
- Valve must clearly be heard to close (diaphragm rod moves toward intake manifold)