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Mercury Cougar

If you replaced the blower motor switch resistor on a 1999 Mercury Cougar because the blower only worked on high speed and now you have no heat what could be the problem?

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2007-10-26 19:17:10
2007-10-26 19:17:10

It is probably the resistor. I had the same problem with my 99 Cougar. It is located on the passenger side under dash. Check with Ford. I think that this part was recalled.

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If the blower only works on high the blower resistor is most likely the problem and should be replaced. On rare occasions if the car has blown the resistor more than once the blower motor shouuld be replaced.

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I had the same problem with the same year car. I've replaced the resistor several times. It works for months & then it stops working again. I think this is the 4th time I replaced the resistor, it is working okay now. I think it is a defect in with this cars fan system. I had a similar problem with my 2001 Sebring Convertible. I had the blower motor replaced, and now the fan works perfectly.

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Because mercury can travel great distances through the air, the problem of mercury pollution affects all of North America and is a global environmental problem.

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It could be a thermostat that is stuck open or maybe a bigger problem...like the blend door is either jammed or broken as well.

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I just had that same problem..I took it in to have it fixed and they replaced the blower motor resistor and that seems to have fixed the problem

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i think it probably because the motor has a ground problem or it has bad brushes and is is drawing to much energy for the resistor

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Just had this problem. I replaced the oxygen sensor and it appears to be running fine.

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change the resistor if the problem continues try the fan with cables directly to battery and you will see for sure that the fan need to be replaced.

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Was the blower motor defective, or where you just guessing. Did you apply 12 volts to the old motor to see if it was bad? Did you check the Fuse. It may be a defective blower motor resistor pack which is a common problem on this car.

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Most often a resistor fails because it is unable to properly dissipate the heat generated by the current flow. A resistor rated for more power (higher wattage) may resolve the problem.

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The blower resistor has failed.The blower resistor has failed.

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Mercury works very well in thermometers. The problem is when the thermometer breaks: mercury is quite toxic.

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I have the same problem. I have just got it out of the mechanics after they changed the resistor on the blower. I have just been looking in my cars' history paperwork and it's been replaced before. Seems to be a common problem.

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One common problem is the resistor, they like to get to hot and melt. The resistor is located under the passenger side glove compartment, by the fan motor. There should be two screws holding the resistor in place. Unscrew the resistor then unplug it from the wire harness. If it looks burnt or is melted, then chances are this is the problem. Plug in the new resistor and screw it back in place. It is a cheap fix and is easily accomplished.

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Your Mercury Cougar might stall in reverse because of a problem with a bad crank sensor. This problem could also be due to the crank sensor wires which are damaged or not wired correctly.

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More than likely the culprit is a defective blower motor resistor pack. It can be the switch itself, but it is unlikely. I replaced the switch and had the same problem, its most likely the resister, this is a recall so your local ford dealer should fix it for free if not id call up ford and complain

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I had the same problem in my 1999 Mercury Cougar, I replaced the flasher located in the blinker assembly. It was very simple to do. Flasher cost about $10

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I had this problem with my 2002 Grand Prix where it would only work on high, and even then only worked sometimes. I had to have the whole unit replaced. It was around $400.

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i have an 87 topaz where the alternator goes bad also. have replaced it twice. it is just a common problem in the topaz's

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Could be the switch or the resistor and or the fan itself , There was a recall on this but to late to get it now , All are easy fixes

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It is either your blower motor resistor pulling too much current, or the blower motor itself pulling too much current. The resistor is located underneath the dashboard behind a kick shield. The blower motor is in the enigine compartment, just behind the battery.

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those trucks had common problem of the blower motor resistor going bad or burning out and it would only work on high speed. the resistor is located under the passenger side dash by the blower motor. hope this helps


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