Question about 1993 Mercury Grand Marquis

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Blower fan on 2000 Mercury Grand Markee won't function

Fan stopped working and when we looked under hood and started checking the wiring it came on. it did this on and off for a week then it stopped all together and we could not get it started. I took a wire and ran a ground from battery to where the black wire snaps into the harness. The fan came on and has been running. The problem is I can't turn it off or up and down with the dash controls. The only way to stop it is to unplug the ground I ran. Is this a common problem? Do you know what is wrong?

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Put back the original plus and check the fuse

Posted on Jul 16, 2009

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Mercury Grand Marqui fan stopped working


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Air condition and heater will work but the blower fan will not come on.2000 Mercury Grand Marquis


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2000 grand marquis blower fan stops on lower speeds


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2 Answers

Blower fan stops on lower speeds 2000 grand marquis


There is a blower realy. Which steps the voltage up or down. If it fails it will run 12 volts or HIGH speed only... Replace that and your good.

Jun 28, 2009 | 1993 Mercury Grand Marquis

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