Question about 2003 Mercury Grand Marquis

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Where's the radiator refill cap on a 2003 Grand Marquis

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On the filler bottle up front on the fan shroud. cars built before the July break use green antifreeze, cars built after the July break use Motorcraft Gold extended life antifreeze. check build date on drivers door VIN tag.

Posted on Sep 02, 2010

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1 Answer

How do I burp the coo long system in a Mercury grand marquis


Answer borrowed from BigNslow
Determine the capacity of the cooling system, then properly refill the system at the recovery tank or radiator opening with a 50/50 mixture of fresh coolant and distilled water until it reaches the FULL COLD line on the recovery tank or the radiator is full.

Leave the recovery tank or radiator cap off to aid in bleeding the system.

Start the engine and allow it to idle until the thermostat opens (the upper radiator hose will become hot). The coolant level should go down, this is normal as the system bleeds the air pockets out of the system.

Refill the system with coolant to the proper level.

Turn the engine OFF and check for leaks.

Mar 07, 2015 | 2002 Mercury Grand Marquis

1 Answer

How do I burp the cooling system in a Mercury grand marquis


Answer borrowed from BigNslow:
Determine the capacity of the cooling system, then properly refill the system at the recovery tank or radiator opening with a 50/50 mixture of fresh coolant and distilled water until it reaches the FULL COLD line on the recovery tank or the radiator is full.

Leave the recovery tank or radiator cap off to aid in bleeding the system.

Start the engine and allow it to idle until the thermostat opens (the upper radiator hose will become hot). The coolant level should go down, this is normal as the system bleeds the air pockets out of the system.

Refill the system with coolant to the proper level.

Turn the engine OFF and check for leaks.

Mar 07, 2015 | Mercury Grand Marquis Cars & Trucks

1 Answer

2003 mercury grand marquis transmission fluid refill


Get the Qts atf cgen apt adapter and use the online def ceg alignemnet tool.

Aug 22, 2012 | 2003 Mercury Grand Marquis

1 Answer

1999 mercury grand marquis occasionally overheats, leaks around radiator cap, makes gurgling noise on passenger side. Have replaced heater core, water pump, thermostat, hoses,& radiator cap.


Check the antifreeze for oil, pull your dipstick out, see if antifreeze is in oil or smells sweet or over full, sounds like you may of a bad head gasket. You can also check this by having a compression test done on the cylinders.

Feb 18, 2011 | 1999 Mercury Grand Marquis

1 Answer

Need tofind out what a control circuit for a 2003 Grand Marquis fan motor can be located


If your fan went out, check the Resistor for the Blower motor. Just trace back the wires from the fan to a connection on the Firewall. This part will have 2 small bolts and 1 wire connector. Tap that part and see if it will start working.

If you get a Replacement part you can hook it up to the connector before removing the old part. It should work instantly if that is your problem. To remove the old part, you will need to deal with the heater hoses that are in the way.

I had to unhook 1 at the rear of the engine. I worked on a cold engine and I did not lose much Antifreeze by disconnecting the hose. My car was a 2002 Grand Marquis. Guess leaving the Radiator cap on keep the water from pouring out the engine.

Oct 07, 2010 | 2003 Mercury Grand Marquis

2 Answers

I want to change my antifreeze in my 2003 merc grand marque. Where is the drain plug on the radiator? Do I pour the new antifreeze into the overflow tank on top when I refill it?


look down at rad from top to get familiar with where i am talking about. now opposite side of the lower rad hose is where you want to go, two styles of rads, one has a wing nut type white plug, and other as 6 sided white plug, unthread with pliers or by hand loosen till desired flow is coming out. fill into reservior or overflow tank to half way and run engine til i reaches operating temperature and you has good heat out of heater, this makes sure all air is out of system, and this is complete ttop up to full and install cap

Jul 06, 2010 | 2003 Mercury Grand Marquis

1 Answer

Does the heating system for a 2003 mercury grand marquis have fuses


no the heating sistem is base on hot water of radiator check the level in ur radiator then check if the houses that goes from ur radiator to the inside of ur car dont have problems

Apr 16, 2010 | 2003 Mercury Grand Marquis

3 Answers

How to flush and change the antifreeze on a 2001 mercury grand marquis


loosen pressure cap slowly at coolant tank to relieve pressure,when pressure is relieved remove cap,place a suitable container under drain valve at bottom of radiator open drain valve.when coolant has stopped draining,close valve.then remove thermostat,[this is a good time to replace t.stat since it must be removed to refill cooling system],disconnect heater core coolant supply hose at rear of intake manifold.add coolant thru t.stat opening until coolant comes out of coolant supply hose fitting,reinstall hose and tighten[not to tight] reinstall thermostat o ring and thermostat.add coolant to tank until the coolant level is between the COOLANT FILL LEVEL marks.select the maximum heater temperature and blower speed settings run engine until it reaches operating temp.add coolant until the coolant level is between the COOLANT FILL LEVEL marks.turn off engine allow it to cool, recheck coolant level,add as needed .ford requires this procedure to avoid engine damage due to trapped air.

Jan 15, 2010 | 2001 Mercury Grand Marquis

1 Answer

How do I flush the radiator


The easist way to do this is to wait for the engine to be cool disconnect bottom radiator hose and allow all the fluid to come out (Use a big bucket if you can or it gets messy), remember to take off the radiator cap first. THen, start the car for a few seconds allowing a bit more to come out. Then attach hose again. Put in your flush stuff for the radiator if you want to or just use straight water. Repeat this procedure about 5 times until all the water is clear. Then try to get all the water out, then refill with a 50/50 radiator fluid solution. Allow car to cool down, then, take cap off and fill more, drive for 10mins watching temp. Allow car to cool again, check level and top off if necessary, then allow to cool then check overfill container and fill to maximum line for cool.

There you go!

Have a Happy New Year!

Mark

Dec 31, 2008 | 2002 Mercury Grand Marquis

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