Needs a blower resistor up under dash somewhere you replace that and you should be all set
The resistor block is under the hood in the Firewall directly behind a heater hose. You'll likely need to replace the Blower Motor (and fan) as well. Hope your Fan Speed Switch isn't burned up too.
2004 Mercury Grand Marquis LS Ultimate
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Maintenance & Repair
Replaced the switch and then the resistor still the same symptoms. No response from switch position one or 2, full on at position 3 only. What's next?.
2005 Mercury Grand Marquis GS
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Maintenance & Repair
My climate control only works on defrost when blowing hot or cold. Would removing the face control and cleaning contacts help?
2005 Mercury Grand Marquis LS Premium
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Maintenance & Repair
where are the fan sensors located
1998 Mercury Grand Marquis 4 Dr GS Sedan
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Maintenance & Repair
Blower only works on high and randomly selects vents.
2006 Mercury Grand Marquis GS
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Maintenance & Repair
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