Look up kits which change from R12 to R134 freon. In the beginning, things were advertised as incompatible and that compressors could not be reused
From what I understand there are chemicals which can be added to the systems once the old Freon and oil are removed. There are Freon recovery machines which collect the old material.
A technician then can add a neutralizer and refill the system with modern freon and the seals and bearings are suppose to handle the new chemicals.
So for the Freon recovery aspect, you need to go to a professional for this service.
SOURCE: 2007 Mercury Grand Marquis required oil weight
If u have a moderate climate, 10W-30W, if cold climate 5W-30W, do not use any heavier weight of oils.
SOURCE: rear shocks on a 1996 Mercury Grand Marquis
2 bolts on the top of shocks and 1 bolt on the bottom but the top 2 bolts are a pain in the neck
SOURCE: Mercury grand marquis 1997 temperature control
I'm not sure if yours is identical to mine since yours is second gen and mine is third gen, but with mine (1998 MGM), the heat was stuck on all the time. Full heat would practically cook your feet and you couldn't shut it off.
It was a servo/servo arm that controls the hot/cold mix door. The part was $15. The labor was $700. They had to take the entire dash out of the car to get at the part. Required two more visits due to a missed electrical connection to a daylight sensor and a vacuum issue that made the car stall when put into reverse.
My car had 150K on it at the time. Has 165K on it now. Still runs great and looks great. It's now my wife's auto and I drive a 2006 MGM.
SOURCE: wiring diagram for 1983 grand marquis alternator
i found out that it grounds when u put it on the car so u dont need to hook anything to the ground connection. the power goes to the bigger connection. the feild is usually the longer wire of the 2 wires that are left. the third goes to the sta spot
SOURCE: how to replace starter +1993 Mercury Grand Marquis
disconnect battery,,jack car up,,put jack stand on frame,,take starter bolts out,(may not be easy),,take wires off starter,,hoped it helped,,
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