Question about 1995 Mercury Grand Marquis

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We have the kit to add freon, but cannot figure out where to put the hose in a 1995 Mercury Grand Marquis...

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  • Anonymous Apr 03, 2011

    Don't add if you have a leak,your
    poluting the atmosphere,repair leak
    You can not add, as you have no
    way of knowing how much to put in



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There is a big black thing when you r facing to your car on the left side up by the hood

Posted on Apr 19, 2011


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What a/c retrofit conversion kit do I need for my 1983 mercury grand marquis

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.

Jul 29, 2017 | Mercury Cars & Trucks

1 Answer

Cannot locate port to add freon for a/c/ system to my 2000 merc.g.marquis

Follow the two lines (rubber hoses) from compressor to A/C pump if they are not in the lines they have to be on one of the two units, more likely on the compressor, I believe. I don't know if your vehicle has a maintenance free system, I doubt it on a 2000 model.

Sep 20, 2013 | 2000 Mercury Grand Marquis

1 Answer

Find heater control valve in 1995 mercury grand marquis

On most 1990s models the valve is in one of the heater hoses in the engine compartment.

Feb 01, 2013 | 2004 Mercury Grand Marquis

1 Answer

How to find low port side to add freon to 1999 mercury grand marquis

the low side has the larger tubes and the ports are different sizes so you can't put it on the wrong port

Jul 02, 2012 | 1999 Mercury Grand Marquis

1 Answer

Ac not cold

Most likely leaked the refrigerant out, take it to a reputable shop for a diagnosis before putting more freon in it.

If you need further help, I’m available over the phone at

May 17, 2012 | 1995 Mercury Grand Marquis

1 Answer

Where do you add freon to 1997 mercury gran marquis put on new ac compressor and need to add freon

You should find a fill stem on the black oblong tank or right next to it. This is the low pressure side. You should get a Vacuum pump which can be loaned from Autozone or Oreillys with a refundable deposit. You need to draw out the moisture in the system and create a Vacuum before you refill it.

You should also use an Oil charge for the compressor. There are Freon cans with the oil charge already in them. However, there are different weights of oil used in the compressor. Let the Auto parts people get you the right type for your car. There are different weights, just like engine oil has different weights.

You will need to jump the connector at the low pressure switch to get the system to take freon. Once you have enough to close the low pressure switch you can remove the jumper wire and fill at will.

Nov 21, 2010 | 1996 Mercury Grand Marquis

1 Answer

Where is a thermostat on a 1995 grand marquis?

follow top rad hose to motor, thermostat will be under where rad hose connects to motor

Oct 02, 2010 | 1995 Mercury Grand Marquis

1 Answer


The best answer that you can get depends on how mechanically inclined you are and how bad your problem is on the car.

If you are lucky, you can buy a A/C gauge and minimum hoses and refill the system at the low pressure fill back by the firewall around the black oblong tank with the hoses on it. You follow the instructions and add Freon until you get a steady pressure in the correct temperature range. Too much is as bad as too little. On Fords, I have replaced the Low pressure switch first and been alright with the remaining the system.

If you are not lucky, you may have to add oil to quiet a noisy compressor or you may have a bad electric clutch or leaking hose or component. There is a neat ultraviolet kit with leak detector, uv penlight, and enough juice to do 4 tests. It is available at Autozone. But you still have to fix the problem when you find it.

If your system is open, degassed, and you have to refill it you can rent a Vacuum motor to prime the system , you can do it at Autozone. It takes a significant deposit for the machine and then you get a full refund when you return the machine. Oreillys may have one too.

If you have friends or coworkers, they can tell you about the bad or good places for this service. It is really an unknown. About all you can look at is the Labor cost per hour. Good Luck

Apr 02, 2010 | 2003 Mercury Grand Marquis

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