Grand Marquis V8-255 4.2L (1982)
This procedure applies to vehicles having the following engine calibrations/kit codes and involves the installation of vacuum retard delay valves
(VRDV) in the air control and/or air bypass valve vacuum hose.
This procedure applies to vehicles having the following engine calibrations/kit codes and involves the installation of vacuum retard delay valves
(VRDV) in the air control and/or air bypass valve vacuum hose.