It is what sends the signal for the fan. The fans operate when the water temperature get to 180º. one will come on (if not broken) then wait (keep @ 1500RPM) 5min or till temp Gauge is all to normal approx. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. Probably around 190 degrees. They will only come on under two circumstances; first, if you have the ac or defrost going (ac will be on) then the fans should run. On older vehicle models, just wait about 15 to 20 minutes for the engine to reach operating temperature. Remove fan retaining screws from radiator upper crossmember (Fig. The acceptable range for an engine to run at sits between 195 degrees and, Connect the black lead of the meter to the body of the cold, Depending on the wiring setup of the vehicle, this may. Both radiator fans should always run when the AC compressor is engaged. Want Answer 0. To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on. should the cooling fan on the radiator come on from the initial start up? Accordingly, how do I know if my cooling fan is bad? Connect one-on … The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. The answer should be in your operators manual as to what temperature a fan or fans should come on. Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in … The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. Why does my radiator fan come on when I start my car? How long does a radiator fan take to turn on? They should both come on when you turn on the AC. Your air conditioning creates extra work, and heat, for yur engine. Last year the cooling fan started running incredibly loud. If it reaches a certain point, the fan comes on to cool it off. New booze tariffs about to take effect, NBA player gives the finger to a traumatic year. I ask because recently I took my 2001 2wd rav4 in as it made a running water noise under the dash when starting. Turned the car on and left it running for a bit. pushrod on . Where does what goes around comes around come from? Writer Bio. Normal voltage for a radiator fan is around 12 volts. The primary fan kicks in at 108 C (~226 F). Problems with Cooling Fan in 2016 F150. If you allowing your engine to sit and idle for a while, (without moving), then it might come on. This is linked to a thermostat and works much like your home’s HVAC system. 129 people found this helpful. So, The fan runs mostly at idle or low speed when the engine is at normal temperature. save hide report. If this connection went bad on its own, the high temperature … 1 reply Report. How much does it cost to replace a cooling fan? The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. - Answered by a verified Ford Mechanic. 1995 c4 corvette. Soldier, it is very unlikely that your fan would come on after a few hours of riding; even on a hot day. How can you increase the water holding capacity of sandy soil? When you set your fan to “ON,” you're telling it to keep running 24 hours a day, 7 days a week, regardless of the heating or cooling setting. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The fan or fans should run when the coolant temperature in the radiator is above the temperature of the thermostat for your vehicle. 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