Criuse Control Pedal Valves

[Lago Blue]

This is a compendium of existing posts which may help one understand, check and quickly fix a fading or inoperative cruise system which may simply be due to defective pedal vacuum vent valve operation:

These two items are so essential and simple that it may be they are the easiest, cheapest and best place to start.

Dave's C4 / URS illustrations:

https://www.s2forum.com/forum/technical/brakes-abs/65892-c4-urs-brake-and-clutch-pedal-cluster-switches#post65892

A80Avant's:

https://www.s2forum.com/forum/technical/electrical/11552-cruise-control?p=2020884#post2020884

Mine:

https://www.audiworld.com/forums/audi-90-80-coupe-quattro-cabriolet-22/93-90-cs-cruise-control-2794135/#post24058944

Simmsled's:

https://www.audiworld.com/forums/audi-90-80-coupe-quattro-cabriolet-22/cruise-control-vacuum-switch-overhaul-diy-2745285/#post23748138

[orsum]

Will go through the cruise control info later. My Audi OEM knock sensor has arrived part number on the box 054-905-377-A, revision part number 054-905-377-H made in France on the sensor.