Engine code AAZ: Adjusting

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.

NOTE: The EGR part throttle switch, switch points are set by the manufacturer on a test stand and must not be altered.

Fig 1: Adjusting EGR Part Throttle Switch (Engine Code AAZ)

Adjust new switches as follows:

Operate injection pump lever and clamp 12 mm hex drive of glow plug between stop (arrow -1-) and lower edge of operating lever (arrow -2-).
Press operating lever securely against glow plug (arrow - 3-). In this position, adjust EGR part throttle switch by sliding unit in elongated holes until switch point (switch clicks) is just behind highest point on curved plate (arrow -4-).

NOTE: The upper EGR part throttle switch cover is shown removed to make the illustrated switch point more clear.