radiator fan not working when ac is off

Another common and easily remedied situation that sometimes results in a central air conditioner fan not working is a dirty clogged air filter. Engine Coolant Overtemperature - Protection Mode Active.

17 Car Condenser Fan Wiring Diagram Cooling Fan Electricity Electric Fan

Run jumper wires between the connectors two electrical terminals.

. If there is no sound to indicate that the compressor and fan are working it points towards a break in the power supply or a faulty compressor contactor. Unplug the radiator fan connector. I noticed my radiator fans stayed on during my 20min drive to work the ac was not on.

Consult the repair manual for your specific YMME year make model engine for details on exactly how they are activated. The same way your radiator needs airflow to cool the coolant your condenser needs airflow to cool the freon that makes cold air. If the vehicle overheats care should be taken when driving to prevent further damage by overheating.

If the system is on but set for heating instead of cooling. Third stage comes on at a radiator temperature of 95C 203F 3 Electric cooling fan on radiator 450 watt. First stage comes on at a radiator temperature of 85C 185F b.

Constantly turning the fan on and off can cause wear and tear to your system which can reduce its lifespan. If the compressor is working but not the fan it is indicative of either motor or capacitor failure. Depending on the ambient temperature in your location this should be long enough for the coolant temp to get hot and the thermostat to open up.

Both fan work in sync. Drives2014 SILVERADO 1500 53 LV8. It may seem that you are doomed when both AC fan and.

It makes the fan motor consume more energy and run hot. When Both AC Fan And Compressor Are Not Working. A broken fan may not seem like much but it can cause overheating and of course your ac not to work at lower speeds.

When an air filter is dirty the fans in your unit must work harder to push air through it. Yes the fan will come on when you turn the AC on so that proves the fan works. Leave the AC off for the rest of the test.

Temperature gauge did not move from 160. The radiator cooling fan is not working. A broken fuse is probably one of the most common reasons why your radiator fan isnt working as it should.

4 Resistor behind left headlight. Start your vehicle and let it idle for 10-15 minutes. If the fans fail to operate only with the AC but do come on in normal hot engine conditions then the fuse and relays are fine - its a command problem at the ECU or the AC controller.

Or the control logic that dictate which switch will control the radiator fan motor when engine temperature reach a preset level with or without the AC being ON. If the radiator fan is in working condition move on to the next step. Running your heating and cooling fan even when the AC isnt on helps circulate air throughout your home for consistent comfort.

If the fans never work it could be the cooling fan ECU located behind the grill but check the 50A fuse powering it and the fan relay first. Posted October 29 2019. The most likely culprits are a thermostatic switch fan resistor temperature switch low-speed or high-speed relay or a wiring issue.

After i parked and turned the truck of the fans still stayed on. If the fan does not turn on you will need to replace it. Up to 8 cash back Hello there a couple of different items can cause the fan to not work like this.

I drive a 2014 Silverado 1500LT 53L V8. See Contact Test in Step 1. 1 Radiator up front 2 Two-stage thermo-switch on radiator.

When the driver turns on the AC system the ECMPCM grounds all three relay coils the Rad fan relay the Fan. How to fix Radiador Fan that wouldnt shut offHonda Nissan toyota acura kia lexus chevy Cadillac ford bmw mercedes etc. To avoid this it may be best to leave the fan on.

Assuming fuse and relay are goodno fan should be running when the engine is coolcold the only time the fan should be running when it reach over operation temperature which then the fan kick on to bring the temperature back down to it operation temperature. If you notice diminished air conditioning response hear unusual noises or the engine overheats at a stop you may have a radiator fan problem. The 450-watt system is comprised of.

Radiator fan testing points. If overheating is encountered when the AC is Off may mean that the temperature sensor that send control signal for the radiator fan motor may possibly be faulty. Your systems air filter traps dust dirt and other airborne pollutants to keep indoor air.

Ask me how I know. This can help you diagnose some of these common condenser fan problems. Next to it is the condenser fan relay for the AC.

If the capacitor breaks or you cant get the fan in your AC unit to blow at its normal speedespecially after a manual interventionthe problem is likely a clogged air filter. When the requests for fan activation is withdrawn the fan may not turn OFF until the ignition switch is moved to the OFF position or the vehicle speed exceeds approximately 10 mph. This is to prevent a fan from cycling ON and OFF excessively at idle DTC P1258.

Over time this may cause more frequent breakdowns. That fan is where the air flow is coming from until you get up to speed. Air Filter is Blocked.

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