I have a 1958 Mercury Monterey that has a transmission oil leak from the transmission vacuum modulator. Can anyone please advise on where I can buy a transmission vacuum modulator for my 1958 Mercury Monterey? Thanks in advance for any help.
I would start with a NAPA auto parts store or another good parts store. I would not think this modulator would be that difficult to find. There are many parts suppliers who advertise on the website so don’t forget to use them as well.
fyi, I am having a devil of a time finding a transmision vacuum modulator for a 1958 Mercury. Been on the internet for 3 days, and have talked to several auto parts stores. no luck. I am now going to see of a vacuum modulator from a Ford or Lincoln from that general era, with the same trans, may work for my Merc. Wish me luck!
fyi, after two months of researching, finally found a mechanic worth his salt. He researched this for me and determined the part is called the transmission inhibitor switch — the FoMoCo box calls it a “switch assembly”. That was causing the transmission oil leak – the rubber seal had just gone bad. My mechanic identified the part and, even more importantly, found out where to obtain a new one! (the Lincoln Mercury old parts store in Clearwater, Florida). He replaced the bad part, no more transmission oil leak! URL link for the Lincoln-Mercury Old Parts Store: http://www.lincolnoldparts.com/