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Condenser fan motor does not run - Ram 1500 Dodge Cars & Trucks

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You will have to test for voltage at the fans plug.If voltage is present.ensure that earth is ok,if the earth is faulty,earthing will cause fan to work.Also try giving the fan motor a few taps with a hammer,it may start but will need to be replaced.
Some fans have an extra signal wire.test that this is working when air is on and temp is dropped.
A failed fan will cause overheating in the air cond system which will cause the seals to rupture and loss of pressure=no cooling.
I hope this helps,or get back to me with further findings from tests and perhaps vehicle model info.

Posted on Apr 02, 2011


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Two possibilities:
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2. The fan fails to run when it has power due to blown motor.
To test find the motor to the fan and pull the power plug off it and make a fused jumper wire fused to the fuse size in the system test run the motor directly with power from the battery. IF the fan fails to run it is the fan motor, if it runs than, it is the A/C system controls that failed.

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Does a A/C Condenser Fan Motor for a 99 oldsmobile Intrigue leak?

Condensation from the airconditioning system is supposed to leak out from the drain hose which runs from the interior, down to the exterior of the bulkhead can become trapped if that drainage hose has become blocked, or if it has become dislodged.
So the fan unit won't produce condensation, but condensation if not flowing out correctly can accumulate there on some models.

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The fan is stuck blowing on high, the knob turns etc... but the fan and condenser run full blast

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2006 dodge ram 1500 condenser fan not working. Where is the A C Condenser Fan fuse located?

from a TSB, wonder if your dash is cracked too?
The condenser fan fuse (#39) in the power distribution center may open leaving the condenser fan inoperative. This may be caused by a condenser fan with excessive current draw or by water collecting in a trough in the fan shroud and freezing in cold weather, which can prevent the fan from turning. This may illuminate the Malfunction Indicator Light (MIL).

ps: the water collecting is because there is no protection in the underneath of stuff in these vehicles....many many documented problems, could be they originate from the cracked dash falling inside or pulling apart and damaging electronics too...

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Fan not working on 323 99 bmw just replaced resistor pack(?) and still not working. Waspretty sure based on info/common problem this wolud work

Yes, that would be my first choice as well.

Brown is ground on just about all german based vehicles.

Run 12v directly to the motor. w/o the resistor pack it will go to it's highest speed. if it doesn't run, motor bad.

Figured you've checked the fuse 1st. but worth mentioning. may as well replace the relay because it's easier than running 12v to the motor.

So you've run 12v to the motor, checked fuse, replaced relay, and it still doesn't run. Wait a minute......which fan is this? The interior fan or auxillary cooling fan in front of the condenser? How the heck can I give repair advice when I don't know which fan it is?

Nevermind. State problem more clearly.

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1 Answer

The cooling fan on the driver side of the radiator does not work i just put a new one where the water hose side is and now it runs but the other one does not. I put one new thermostat and one new fan...

One of the fans is for your radiator and the other is your condenser fan (for your air conditioning). The condenser fan starts at a higher temp than your radiator fan.
To test the condenser fan (the one on the right side, facing the car) unplug the electrical connector at the motor and use jumper wires to connect the fan directly to the battery. If it runs, check the fuses (engine compartment far upper left as you face the car), then the relay (right front corner of the engine compartment as you face it). The radiator fan typically engages between 189 and 199 degrees, but the condenser fan typically engages between 217 and 232 degrees. In other words they don't necessarily run at the same time. First of all, try letting the car run until the engine is warm WITH the ac running. If the condenser far does not run, then go through the checking procedure.
I hope this gets you started on a fix.

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Check the fan motor with direct power from the battery to the fan plug. If it runs, check the relay.

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2 Answers


jtaddiken: A/C systems rely on air flow over the condensers and is the component that looks like a radiator. This component is also located in front of the radiator while the fan is behind the radiator. Consequently if it does not function, especially on hot days the pressures in the condenser will build. The condenser is where the freon is condensed from a gas to a liquid. The byproduct is HEAT!
SO, You could have a number of problems occurring. 1. Fuses: in the main fusible link box are located on the left side of the engine compartment. It's a large black box about a foot long and 4 inches wide.When you remove the cover, you will see some fuses with clear plastic tops on them. They will have numbers on them.
The top fuse will have 140 the next two spaces down should be empty. Then there should be a 30, 30, 30, 50, 40, 40, 30.
You want to check the 30 which is the first one in the line as you go down from the 140. Look through the clear plastic top and compare it to the other ones. if the center of it is burned or missing, it is no good.
Pull it out and get a replacement with the same number.
IF it blows again, you have an electrical short which you can either chase down or bring to a professional.
2. Relays: There should be another box or an arrangement with 4 relays. Three will run side by side and one will be at the other end of the box. Based on the schematic I am looking at, they all work in conjunction with each other. The only variable is the condenser fan. But the radiator fan is designed to run whether the A/C is turned on or not. A failure of any one of these will render the condenser fan inoperative.
3. The fan motor has failed. You can do a simple test which you might do before you do check #2. That is, unplug the fan motor and supply it with an external power supply. Both the positive and negative. The negative is supplied through the relay and the other side to the fan is hot all the time.If the motor runs then continue with the other tests, if it doesn't , the motor is bad.
4. The pressure switch. If the pressure switch has failed, it will create an open circuit to the relay that also kills the compressor clutch so the A/C stops cooling. It can be located on the receiver drier or on the high pressure line close to the drier.
One which malfunctions can also keep the Condenser fan from running.
5. An A/C condenser with a lot of debris built up on it. There is significantly more air being forced through the condenser coils than the fan can pull through the radiator, air leaks between the radiator and condenser, thus minimizing the suction through the condenser.
I hope I haven't created a confusing situation rather than a plausible solution. I try to not only solve the problems, but give a basic understanding of how it works and then why it may not work.
Sometimes people will grade me on my assistance. Most of the assistance I have given, has not yielded a "well he helped" OR BOY, this guy should be giving advise in loading rocks!"
Any way, if I have helped and you need further assistance, I would be delighted to assist. Good Luck.

May 06, 2009 | 2002 Toyota Highlander

1 Answer

1998 Ford Windstar AC compressor

They get more than warm, but not excessively hot that you can't touch it. This can be caused by a faulty condenser fan motor, dirty condenser coil even low freon, which is my guess along with a dirty condenser. Check these two issues and if it's not the problem your compressor may be getting ready to die. because of internal issues with the motor windings. Make sure the fan is running to speed, clean the condenser and see if the larger copper pipe to the compressor is ice cold and sweaty, if not you may need freon

Jun 21, 2008 | 1998 Ford Windstar

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