Questions & Answers for: 1999 grand marquis blows cold

...WERE IS THIS VENT DOOR MOTOR CONNECTED? U THINK I COULD DO IT MYSELF? FOR A 1999 MERCURY GRAND MARQUIS removal of the dash is the easiest way of reparing the ac system other than the under hood ...

blows hot air and the temperature of the air can not be controlled. Changing the temperature setting by pushing the red or blue "rocker switch" on the top left corner doesn't seem to make a difference

Grand Marquis LS with 55K miles. A/C blowing cold. Turned off car, went into store. Come back out, turn car on, only hot air. Air feels warmer than outside air which was 90 deg. Checked 30 A fuse, ok.

Grand Marquis, the heater core door does not close when I switch to the A/C, In other words I have hot air blowing out all the time, today I manually closed that door and finally cold air came out. In

...on air conditioner blows hot air instead of cold and the air is charged fi this is what i think it is check the ambient temp sensor located in the dash,get back to me if you need more help,thanks ...

...cold and the antifreeze blows out the tank. a new water pump, and two new thermostats have been installed and new cap. system was flushed and still problem exists. Is there air in the system? no ...

grand marquis the a/c still blows could but it only blows hot air how do I fix this problem If the blower works but no cold air, a mechanic would check to see if the system is low on freon, then check

...Grand Marquis was blowing hot air only no matter what settings i chose. Found on various forums to disconnect battery for a minute and reconnect. I figured there was no way it would work.......but it ...

...1999 MERCURY GRAND MARQUIS WONT IDLE ITSELF AT COLD STARTUPS? DOES NOT IDLE ON START UPS. HAVE TO STEP ON THE GAS PEDAL FOR A WHILE This problem is commonly caused by a dirty automatic idle speed ...

1999 Grand Marquis keeps overheating after 15 minutes. Upper radiator hose gets hot and very tight. The coolant reservoir also boils over and the heat is blowing out cold air on the inside. Could it ...