john ... 5/30/2011
1980 Mercury Marquis Base 8 Cyl 5.8L
Body & Interior
headlight covers wont go down
the select year cat. only went down to 1980. My car is a 1975 Marquis w/ modified 357-400 ci. I dont know if its related but the ac pully is bad so I disconected it Also what are the things that opperate the auto headligt covers called? knowbody seems to know. Are they hydrolic or gnumatic?
There should be a bypass valve in which will keep covers in open position, but to answer your question, they should be vacuum operated,thus a small crack or hole in hoses will dramatically effect them operating properly.