Question about 1999 Mercury Cougar

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The heat a/c only works on high - 1999 Mercury Cougar

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Switch faulty or connection to blower motor. unlikely that it is the motor itself

Posted on Oct 02, 2010

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Posted on Jan 02, 2017

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Have a 2009 Nissan Quest I can't turn the heat off. Just stays on a high level of blowing out heat .


If you have a fan that has different speed settings (1234, or low med high etc) and the only one that works is high - then the blower resistor pack has failed. If you have a climate control unit (where you just pick a temp you want) then the fan is controlled by the heating system and it sets fan speed. If you have climate control style try lowering the temp to a lower setting (current temp in vehicle) and see if fan slows down. If not then climate control unit or fan resistor bad. If dial type and you get nothing on lower settings (only high works like mentioned above) you need to change blower resistor. It is located under dash near the fan itself. Look for small unit bolted in duct near fan with wire plug going to it.

Feb 23, 2015 | Nissan Cars & Trucks

1 Answer

97 Gmc Sierra my heat only works on high heat sometimes or it doesn't work at all i changed the blower motor and it still doesn't work


You should have a high speed blower relay that provides power on high, and the other speeds go thru a resistor.
The problem could be the actual fan control switch, or the resistor.

Feb 25, 2014 | Cars & Trucks

1 Answer

Heater doesnt blow heat and sometimes works but only on high setting


This depends on what type of heat it is and what you are heating. If it is your car's heating then you have to wait for the car to warm up before hot air blows out.---------------------------------------------------------------------------------------
digiprog 3

Jan 10, 2013 | 2005 Pontiac G6

1 Answer

Heat


You need to replace the blower motor speed control resistor.

Jul 25, 2017 | 2000 Dodge Stratus

1 Answer

My air condition does not work at all and the heat only works on high what could that be?


Two separate issues...but the heat only working on high is caused by a bad blower motor resistor.

Feb 12, 2010 | 1999 Acura 3.5RL

1 Answer

Heating and air conditioning


The blower motor works on high setting ONLY when the blower resistor is bad. The blower motor resistor is held in place with 2 screws and attached into the heater housing under the right side of the dashboard. You can identify the resistor by the big wires that are connected to the connector. If this heating/cooling system is the auto temp type, the part is a bit high on the price.

Feb 10, 2009 | 2005 Jeep Grand Cherokee

1 Answer

2005 Buick LeSabre heated seat not working


The heated seats have relays that run them. Not quite sure where they are located but. That noise is the relay clicking on and off. They are actually pretty loud. Look for faulty connections to and from the relay and check battery power to both sides of the relay.

Dec 30, 2008 | 1999 Oldsmobile Aurora

1 Answer

Heater control only works on high


You need a blower motor resistor,and the heater blower motor should be checked for high amp draw. check Napa for the part or go to Dodge..prpbably about 60.00 dollars.

Dec 19, 2008 | 1996 Dodge Caravan

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