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03 Ford Fusion 2 radiator fan only switches on when you turn engine off! What can be wrong?

Fan never comes on when engine running. Turn car off and radiator fan then kicks in for a minute or so. Never comes on when car is running!

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It only supposed to come on when the motor is hot,but if thats not the case check your fan fuses

Posted on Jan 17, 2013

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2.3 liters, 4 cylinder turbo coupe engine idles erratically and cuts off. Black smoke comes out of exhust pipe. One of the radiator electrical fan comes on even when the motor is cold,


Sounds like you have two issues.

Black smoke and erratic tickover is a rich mixture.

Radiator fan is a separate issue and is the thermostat switch that is connected to that fan. If you have two fans, you need to make sure the other one actually runs as the switch may control both.

Mar 09, 2016 | 1988 Ford F 150

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I have a 2014 Ford Fiesta I replace the engine cooling fan with a new one but I can't get the fan to come on what is my solution


first check your fuse this should always be the first thing you check no matter what before you spend$$$$ if the fuse is good locate the cooling fan electrical plug create a jumper wire and connect it to the positive wire and see if the fan comes on if it does that's good if it doesn't the new motor is n/g now after we have confirmed that the fan motor does indeed work you must drain the radiator and remove the coolant temperature sensor this acts as the switch to turn on the fan motor when the bimetal elements touch each other inside at the right temperature this completes the circuit and turns on the fan motor reverse removal fill the radiator and let run to check for leaks and that the fan now comes on

Mar 26, 2015 | 2014 Ford Fiesta

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Fan stays on when i turn off my car,2006 ford fusion


What a pickle. How long did you give it before you disconnected the battery? You know, most fans may continue running for a short time, especially on a car that has been running at normal temperature for awhile. Reason being, the engine will actually get hotter for a bit as the coolant is no longer circulating. The fans shouldn't stay on too long. Most I have seen, less than a minute.

Be that as it may, a temporary solution to the problem, instead of disconnecting the battery to stop the fan-this is not good for the computer circuits who like steady voltage, however small-is to instead pull the fuse for the cooling fan. This is a large (80amp) maxifuse in the Battery Junction Box. The position in the box is F-29.
If it is staying on too long, the bad part appears to be a module or some type of relay-like switching device right at the fan motor itself. There are 3 wires to the fan assembly. One is the power feed from the aforementioned fuse, one is a command signal from the PCM to turn the fan on, and the last is a ground for the motor and assembly. I hope you could detach this device from the fan motor for replacement. Certainly nothing wrong with the fan motor itself. Good luck.

Jan 31, 2014 | Ford Cars & Trucks

1 Answer

Power steering pump on my 2001 mini one stays on when the ignithion is turned off


It is not your ps pump that is staying on, it is the ps pump COOLING FAN located below the pump. On 2001-05 Minis, this fan is wired directly into the wiring of the main radiator cooling fan, which has two speeds, low and high. When the engine compartment temperature reaches a certain level, the main radiator fan is supposed to come on, and since the ps cooling fan is also wired into that, it is supposed to also come on. But, that low fan speed is achieved by routing power to a resistor, located at the top back of the radiator on passenger side, that cuts the power down. This resistor is highly prone to corrosion and failure. When that happens, neither the main radiator cooling fan nor the ps pump cooling fan can come on UNTIL the engine compartment temperature reaches an alarming level, which switches through a relay power directly to the fans, by-passing the resistor. By then both fans are attempting to bring the temperature back down to a safe level. Then, if you turn your engine off before the temperature reaches the lower threshold so that the fans are still running, the ps pump cooling fan will just keep right on running, as there will be no relay signal given to turn it off, and your battery will be drained.
To fix this, the resistor either needs to be replaced, or, the resistor can simply be removed and the contacts jumped. This last fix will mean that when the lower temperature threshold is reached, the main radiator cooling fan will come on at full speed, and the ps pump cooling fan will also come on. After my ps pump failed due to fan failure, I did this to my '03 Mini, and have run it for years this way. No more ps pump problems. You do need to make sure you keep the fan clear of debris and freely turning, or you could have bigger problems, like a fire, since the wires will get very hot sending power to the fan motor when the fan is bound up with the motor not turning. A blown fuse will often be the first indication of a fan bound up.

Apr 14, 2012 | BMW Mini Cars & Trucks

3 Answers

Ford focus 2006 engine overheating once ac swicth is on..


CHECK TO SEE IF COOLING FAN IS RUNNING.IF NO CHECK COOLING FAN FUSE AND RELAY.THE COOLING FAN NEED TO BE RUNNING WHEN AC ON BECAUSE AIR CONDITIONER PUT A LOAD ON ENGINE.COOLING FAN KEEP RADIATOR AND AC CONDENSOR COOL.FAN NEED TO RUNNING.

Sep 04, 2011 | Ford Focus Cars & Trucks

1 Answer

Where is the cooling fan relay a 2006 ford fusion with a 2.3 engine


its under the cover above the radiator follow the wires from the fan to the relay.

Jun 29, 2011 | 2006 Ford Fusion

1 Answer

2002 ford taurus overheats. Just replaced radiator, waterpump, thermostat and heater core. what else can i do to repair. also, ford flushed the system.


About the only thing that you didn't list is the cooling fan. Are you sure that it's working properly? Drive the car until the engine starts to get hot. After awhile you should hear the cooling fan come on. After you have driven the car for a while, park it and open up the hood. If the upper radiator hose is almost too hot to touch, then check to see if the coolant fan is running. If it isn't, then turn the AC switch to "AC MAX". If the fan still doesn't come on, then a malfunction is indicated. Try to locate the fan control relay and swap it with another relay that has the same part number. Use a relay that will allow the engine to run. Allow the engine to reach operating temperature and see if the fan comes on after switching the AC switch to "AC MAX". If the fan now operates, then replace the relay. I hope this is helpful to you. Thank you for trying Fixya.com. If this does not solve your problem, then post a comment and I will respond by getting into more advanced diagnostics.

Jun 25, 2011 | 2002 Ford Taurus

1 Answer

Overheating water comeing out of bottol


REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.CHECK MECHANICAL COOLING FAN.SHOULD HAVE RESISTANCE WHEN TURN WITH HAND.IF FREEWHEELS FAN CLUTCH NEED TO BE REPLACED.CHECK TO MAKE SURE AUXILIARY ELECTRIC COOLING FAN RUNNING HOT WIRE COOLING FAN IF FAN RUNS.YOU HAVE FAULTY THERMO SWITCH LOCATED AT THE BOTTOM OF RADIATOR ON THE LEFT HAND SIDE ON 4 CYLINDER ENGINE FOR V6 ENGINE THERMO SWITCH LOCATED ON THE LOWER RADIATOR HOSE ON THE RIGHT HAND SIDE OF THE ENGINE COMPARTMENT. CHECK FOR BLOWN COOLANT FAN FUSE OR FAULTY RELAY.IF THE AUXILIARY ELECTRIC FAN DONT RUN WHEN HOT WIRED THE ELECTRIC FAN FAULTY.

Jan 03, 2011 | 2000 Audi A6

1 Answer

ENGINE OVERHEATING


Do the fans come on when the engine overheats? If so nothing wrong with the circuit and the thermostat(not thermo switch!) or radiator is to blame.
Test the fan. There are 2(if you have A/C fitted) Disconnect the electrical plug from the fan. Run 2 wires from the battery straight to the fan and see if the fan comes on. (Be careful when connecting not to short circuit the wires. Theres a lot of power in the battery!) Polarity does not matter. This is a direct current motor so reverse polarity will only make the fan turn in the wrong direction. If the fan turns reconnect its electrical connection and move to the next step.
To test the fan circuit locate the thermo switch. It is on the bottom right of the radiator and has 2 wires connected. disconnect the electrical plug and short circuit the 2 wires by inserting a piece of wire into the connector with the ignition on. The fan should come on. If it does the thermo switch is at fault and needs replacing.
With the electrical sorted there is not much else. Like I mentioned it is either the radiator(blocked) or the thermostat(sticking)
Radiator can be taken to a service centre and have them clean it out for you. The thermostat cannot be repaired and needs to be replaced. It can be removed and the engine will still operate, but just take longer to warm up. I'm not sure on the '99 model, but it is usually located on the right hand side of the engine at the bottom on the water pump housing.

Jul 07, 2010 | 1999 Volkswagen Jetta

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