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It could be a couple of things, but check the easy things first. Check the anti freeze level with a anti freeze checker, if there us more water in the radiator than anti freeze the water will evaporate and the heater will blow cool. next check the thermostat, you have to take it out and heat it up in hot water and see if it opens up when it reaches the right temp when heated it will open up,those are usually the two most common problems.
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You have no heat in your 1994 mercury grand marquis?
i have no heat in my 1994 mercury grand marquis. what could cause the heat to stop working
Why do you have no heat in your 1989 mercury marquis?
because heat core was removed?
1989 mercury grand marquis will not start it will turn over has fuel to injecter but no spark ignition?
pre-heat spark plug, if this works then replace it.
What causes your 1999 mercury grand marquis engine to over heat at slow speeds or stop and go in traffic but it run cool on the open highway or at high speeds?
Have you checked to see if the elect. fan comes on ?
How do you know when the heater core needs replaced in a 1998 mercury grand marquis?
If it is leaking it needs replacing. If you have no heat and the inlet heater hose is hot and the outlet is cool, it is stopped up and may need replacing, if it cannot be flushed out.
Where is the climate control located in a 1999 Grand Marquis?
In the center of the dash. It's the unit you select options on. It controls the AC and Heat.
Why does my heat work but ac don't on a mercury grand marquis?
The heater and the AC are different systems other than the blower, so they normally fail independently. The AC can fail for many reasons, high on the list are low freon (which means there's a leak) and the compressor.
Where is the outside temperature sensor on a 2001 mercury grand marquis the outside temp gauge registers 127 degrees at all times. heat will work only if electronic temp control set at 90 degrees.?
It is possible that the outside temperature sensor is defective. As a result the heat only works at certain electronic temperature control settings.
What are the release dates for In the Heat of the Night - 1988 Ches and the Grand Lady 7-16?
In the Heat of the Night - 1988 Ches and the Grand Lady 7-16 was released on: USA: 26 January 1994
Why would a 2006 mercury grand marquis not blow heat?
There are many reasons. A bad Thermostat. A bad Heater Core. A Bad Control Module. Turn off the radio and IF you have the Climate Control Module, switch from AC to heat and listen carefully to see if you can hear the ducts moving inside the dash. If you can, then the Control Module is working and your down to the other two possibilities. Good Luck.
How is the headlight switch removed in a 1994 Mercury Grand Marquis?
If it is the "pull out" type there should be a button on the switch accessible under the dash that will release the knob (Lights will turn on). Pull knob off and you will be able to remove the bezel which will allow switch to be removed. It is suggested that connector be replaced at the same time. Heat generated be switch destroys contacts. The question you ask is too involved for a proper answer. You may want to go to a car parts store, or book store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library. Headlight Switch Removal and Installation Ford Crown Victoria / Mercury Grand Marquis 1989-1998 from Autozone DIY http://www.autozone.com/az/cds/en_us/0900823d/80/17/3b/a8/0900823d80173ba8/repairInfoPages.htm
Where On a 1994 grand am is the thermostat?
On the 3.1 it is on the driver side, under the exhause manifold behind a heat shield. Not an easy get to it location.
