Question about 1991 Cadillac DeVille

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Ac fan motor won;t run

Ac bloer won'tcome on

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Get a haynes repair manual at auto parts store or on ebay it will tell you everything you need to know to work on your own vehichle

Posted on Jan 16, 2013

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1 Answer

My 2008 Kia optima ac fan won't blow


check the fuse of the blower motor if that is good the blower motor is gone you need you new one

Sep 25, 2013 | Cars & Trucks

1 Answer

My heater/ac fan sometimes won't work. What do I check first?


$24the AC light does not light until you turn the fan on, that is ok, the issue with your fan only working sometimes is more than likely a faulty blower motor, in some cases it is the switch, when the motor does not turn on try tapping it and see if that makes it work, if it does then it is the motor.
the switch at autozone is part number SW295 and is $16
the motor at autozone with the blower wheel is part number PM136
cost is $24

Sep 29, 2012 | 1998 Pontiac Grand Prix

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Radiator fans won't come on while van is running


Start the car and turn on the AC to max. Do either of the fans run with the AC compressor engaged? Also, there is a temp sensor for the fan circuit but I don't know exactly where it is located on that vehicle.

Sep 17, 2012 | 2003 Chrysler Town & Country

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2008 impala got in this evening and ac won't turn


Someone will need to check the fuse for the blower, then the blower motor and the resistor.

Aug 09, 2012 | Cars & Trucks

1 Answer

SW1 AC will only go on high or turn off, it won't turn on a lower setting. Help? what could it be?


What you mean is the blower motor will only run on high, right ?
It could be the fan switch or the resistor.

Jul 09, 2012 | Saturn Cars & Trucks

1 Answer

I turned on the ac and the light does not work, the vents are not blowing and the car is running hot. I have a saturn SL 1996


First check the 15 amp HVAC fuse located in the main fuse block inside the car on the passenger side of the center console, under a cover. If the fuse is good, then the problem may either be the HVAC blower switch (which is the fan blower selector switch), the fan blower motor resistor, or the fan blower motor. An auto repair manual will explain and illustrate for you the steps on how to check each of these components.

Even after pushing the ac light switch on, the fan blower selector switch has to be turned on as well (working) because it provides an electrical path to the positive side of the battery to complete the circuit and turn the ac light on. What the ac light switch does is provide the electrical path for the ac compressor clutch to come on through the ac control relay which is controlled by the car's PCM(computer) when you want ac, but the ac light switch still needs to run through the fan blower selector switch to receive its power. You can turn on the fan without the ac light switch because it gets its ground path(negative) from the blower motor. So the blower motor has to work in order to provide a ground path for the fan blower selector switch to be functional. You could have a faulty blower motor which is why no air blows through the vents. The fan blower motor is located inside the car on the passenger side underneath the dash at the bottom end of the glove compartment box. You'll see it. It's right above where a person rests their feet on the floor. Therefore, if your 15 amp HVAC fuse is good, check to see if you have voltage at the blower motor connector. Unclip the connector and with the ignition on and the fan blower switch moved to any one of the first 3 selections, check for voltage using a multimeter. The voltage will vary because there is a blower motor resistor. Voltage should be higher on setting 3 than 1. If you do have voltage at the blower motor connector, check for a faulty blower motor. The auto repair manual will tell you how to do it using jumper wires.

It's normal that your car is running hot because the radiator fan works in conjunction with your ac compressor. If the ac is on, the radiator fan will be on and therefore the engine coolant temperature will stay in it's normal operating range. If the ac is off, the radiator fan will stay off as well and the engine coolant temperature gauge will begin to rise and show pretty hot (especially at idle). It will do this up until a certain degree then the radiator fan should turn on thermostatically and stabilize the temperature. It's scary and I know what your saying because it does that to my car if my ac isn't on. Don't worry it won't overheat.

May 29, 2011 | 1996 Saturn SL

1 Answer

My blower motor won't come on the heater nor ac


fan motor,fuse or fan ressistor.hope this helps

May 26, 2011 | 2000 Volkswagen Beetle

1 Answer

Hi I have a 1996 T100 the Blower fan for the ac/heater goes on and off when in the on position no matter what speed it on ,I changed the bloer switch but contiues to do the same thing any advise ?


you could have a bad blower motor resistor that the resistor wire is making and braking contact disrupting the power to the motor.it could also be a loose or dirty connector at the resistor or the motor itself a bad ground at the motor or a bad blower motor.

Apr 29, 2011 | 1996 Toyota T100

3 Answers

The heater/ac fan only works on speed settings 4 & 5


you might check your switch sounds like to me that your two lower speed sides of the switch maybe burnwed out.

Dec 19, 2009 | 2002 Chevrolet TrailBlazer

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