Radiator fan in my 2003 crown victoria runs continuosly
The radiator fan in my 2003 Crown Victoria runs continously. It has done so since I purchased the car (used) in Apr. 2004 with 18,000 miles.
While under warrantee the dealer told me this was the way it's supposed to be.
It was nine degrees out the other day, (the a.c. is off) with just the heater turned on, adn teh fan is running. It seems so pointless, is this the way it's supposed to be?
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Sounds like you have a double problem . First locate the radiator fan relay it should be in the fuse box change the relay. Also change the tempature sending unit (attached to radiator) . If your car is overheating . You need to check. For a leak, be sure you have enough. Fluid in radiator, check. Thermostat , change it anyway cheap enough, ( 16 lbs. pressure ) this should solve your problem
The AC runs the fan that cools the AC condenser and the radiator. You may have a problem with the cooling fan for the engine only or its control circuit, this fan is controlled by the main computer in the car called the PCM, you need the dealer to perform a test that operates the cooling fan and delivers back fault codes for any problems found with its operation.
Before you get into this involved job I have a few suggestions. First is the pump leaking causing the system to lose coolant. Grab the fan and try to move it from side to side to see if there is play. Next when was the last time the thermostat was changed out. The thermostat can be stuck in a way as to restrict water flow. Another cause of over heating is a clogged radiator. Older cars can have a slug build up in the radiator core causing a significant cooling lose.
Water pumps on a Crown Vic is located on the front of the engine behind the fan. You should really get a service manual as there are a lot of steps in this job that must be done correctly to avoid future problems.
You start by draining the entire cooling system by opening up the drain plug on the bottom of the radiator. This antifreeze must be disposed of properly by taking it to a repair shop for pick up. Next remove the fan guard followed by disconnecting all the belts. Some people remove the radiator to gain working room. before removing the radiator disconnect the lower hose and the upper hose to the engine. The transmission oil cooling lines are next. Now remove all the bolts holding the radiator in place. As you can see this is not a job for a novas. If you are not mechanically inclined this could be a nightmare of a job.