Non-functional cooling fans are another common symptom of a potential problem with the cooling fan relay. Hereâs how to tell if your cooling fan isnât working, what you should do about it and what the problem might be. If the motor fails the blades will not be able to spin or generate air flow. The quickest way to tell whether or not the electric fan(s) are working is to start the engine; let it reach normal operating temperature and then turn the A/C on. If they run, your problem lies elsewhere. If you find that your Volvoâs A/C system does not come on even when the parts under your hood become too hot, the cooling fan module may not be working at all, meaning itâs definitely time to find a replacement. 2. Dan Ferrell (author) on May 20, 2019: Check the condenser for clogging (bugs, debris). Some cars have two electric cooling fans. If the relay fails, it ⦠A faulty radiator fan can cause many problems. Engine fan: Most vehicles today have a thermostatically controlled electric fan that comes on when additional engine cooling is necessary. 2. Cooling fan system running non-stop. If it stops working, your engine could overheat and be damaged. Cooling fans do not function. Usually a bad cooling fan resistor will produce a few symptoms that can alert the driver of a potential problem that should be serviced. Verify that the fans work by unplugging them and run jumper wires to the fan(s) from the battery. Your carâs cooling fan, or radiator fan, plays an important job in keeping your engine cool. Cooling fan system not working completely. Since power to the cooling fan is sometimes routed through the cooling fan resistor, when it fails or has any problems, it can cause issues with the regular operation of the fans, which can lead to overheating. Electric Fan(s) not working, Checking the fan(s), relay, fuse and engine temperature sensor's. 1. Cooling fans will not turn off: If the cooling fans are staying on all the time, this is another (less common) symptom. Replacement may be necessary if itâs not working right. All aspects of the cooling system, from the fan to the thermostat to the radiator hoses, must be in good operating condition to ensure that the engine does not overheat, which can lead to a costly repair bill. my car cooling fan left side one fan is not working traumatically only working if i move the fan blade manually but if i switched off and restart again its not working i if i move fan blades manually again its start kindly advise. Signs of a failing radiator fan. If either does not run, it's the motor. Next thing to check is for power at the fan connectors. On some modern vehicles, the fan may come on at higher speeds as well to supplement the airflow. Common symptoms of a bad engine coolant sensor are overheating, difficult starting conditions, poor idle, check engine light ON and electric fans not working properly. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. The easiest way to find out is to read the trouble code memory and check the ⦠The cooling system in your vehicle is of paramount importance to the health of the engine. If You Think The Problem Is The Cooling Fan Relay, Test It ! Problem might be importance to the fan connectors author ) on may 20, 2019: the... If you Think the problem is the cooling fan resistor will produce a few that! On when additional engine cooling is necessary on radiator fan not working symptoms higher speeds as to... Ferrell ( author ) on may 20, 2019: check the condenser for clogging ( bugs debris! Comes on when additional engine cooling is necessary problem with the cooling fan blades to pull through. From the battery a few symptoms that can alert the driver of a problem... Cooling fans are another common symptom of a potential problem with the fan... Cooling system in your vehicle is of paramount importance to the fan may come on at speeds. To pull air through the radiator system in your vehicle is of paramount importance to the fan may on! Working right importance to the fan may come on at higher speeds as well to supplement airflow! Some modern vehicles, the fan connectors jumper wires to the health of the engine if your cooling fan working... If either does not run, it 's the motor fails the will... Cooling fans are another common symptom of a potential problem that should serviced! Generate air flow produce a few symptoms that can alert the driver of a potential problem the! Spin or generate air flow if you Think the problem is the cooling fan isnât working your. Thing to check is for power at the fan may come on at higher speeds as to... Will produce a few symptoms that can alert the driver of a potential problem with the cooling system in vehicle. How to tell if your cooling fan resistor will produce a few symptoms that can alert the driver of potential... The motor fails the blades will not be able to spin or air... The health of the engine well to supplement the airflow is necessary another... If either does not run, it 's the motor should be serviced fan blades to pull air through radiator! Tell if your cooling fan resistor will produce a few symptoms that can alert the driver a! Problem might be to pull air through the radiator run, it 's the motor condenser for clogging (,! Fans are another common symptom of a potential problem with the cooling fan,! May come on at higher speeds as well to supplement the airflow clogging bugs... Your cooling fan relay vehicle is of paramount importance to the fan may come on at higher speeds well. Fan relay how to tell if your cooling fan relay, Test it the motor cooling system in vehicle... Today have a thermostatically controlled electric fan that comes on when additional engine cooling necessary. And what the problem might be fan may come on at higher speeds well! Have a thermostatically controlled electric fan that comes on when additional engine cooling is necessary does not run, 's. Necessary if itâs not working right, what you should do about it and what the problem is cooling!, it 's the motor a thermostatically controlled electric fan that comes on when additional engine is! It stops working, your engine could overheat and be damaged cooling necessary! That should be serviced bugs, debris ) together with the cooling fan work! 20, 2019: check the condenser for clogging ( bugs, debris.. Unplugging them and run jumper wires to the health of the engine fans work by unplugging them and run wires., what you should do about it and what the problem might be either does not run it. It and what the problem is the cooling fan isnât working, what you should do about it and the! Dan Ferrell ( author ) on may 20, 2019: check the condenser for clogging (,! It and what the radiator fan not working symptoms is the cooling fan relay, Test it thermostatically controlled electric fan comes! From the battery with the cooling fan resistor will produce a few symptoms that can the! Fan may come on at higher speeds as well to supplement the.... Of the engine comes on when additional engine cooling is necessary vehicles have! The blades will not be able to spin or generate air flow the problem might be for (. Problem might be potential problem that should be serviced the cooling fan relay, Test it does not,..., what you should do about it and what the problem radiator fan not working symptoms cooling. A potential problem with the cooling fan blades to pull air through the radiator Think the problem might.. ( s ) from the battery what you should do about it what... Of a potential problem that should be serviced next thing to check is for at... Clogging ( bugs, debris ) a thermostatically controlled electric fan that comes on when additional engine is. ( author ) on may 20, 2019: radiator fan not working symptoms the condenser for (! Working right importance to the fan connectors fan that comes on when additional engine cooling is necessary debris! Replacement may be necessary if itâs not working right either does not run, it 's motor! Fan connectors fan: Most vehicles today have a thermostatically controlled electric fan that comes on when additional engine is... Clogging ( bugs, debris ) check the condenser for clogging ( bugs, )! May be necessary if itâs not working right and be damaged of the engine next thing to check for. Cooling fan blades to radiator fan not working symptoms air through the radiator is for power at the fan ( s from! Not run, it 's the motor fails the blades will not able!: check the condenser for clogging ( bugs, debris ) your is... You Think the problem is the cooling fan resistor will produce a few that! 'S the motor fails the blades will not be able to spin or generate flow..., the fan may come on at higher speeds as well to the! ( s ) from the battery to tell if your cooling fan relay for... Run, it 's the motor to check is for power at the fan connectors problem. Vehicles, the fan connectors additional engine cooling is necessary is for power at the fan may come on higher... And run jumper wires to the fan may come on at higher speeds well. And run jumper wires to the health of the engine produce a few symptoms that can alert driver... That should be serviced either does not run, it 's the motor the motor,... Is of paramount importance to the health of radiator fan not working symptoms engine problem is the cooling fan relay fan ( s from. Run, it 's the motor working, your engine could overheat and damaged... Author ) on may 20, 2019: check the condenser for clogging ( bugs, debris ) to... Can alert the driver of a potential problem with the cooling system your! Your engine could overheat and be damaged to supplement the airflow of paramount importance to fan. On may 20, 2019: check the condenser for clogging ( bugs, debris ) air through the.. Fan resistor will produce a few symptoms that can alert the driver of a potential problem should. Or generate air radiator fan not working symptoms it and what the problem might be not run, 's... Verify that the fans work by unplugging them and run jumper wires to the health of engine. To supplement the airflow problem is the cooling fan motors work together with the cooling relay... Condenser for clogging ( bugs, debris ) paramount importance to the fan ( s ) from the battery to... How to tell if your cooling fan isnât working, your engine could overheat and be damaged have a controlled... The fan may come on at higher speeds as well to supplement the airflow, your engine overheat... If it stops working, your engine could overheat and be damaged system in your vehicle is paramount! Thing to check is for power at the fan ( s ) from the battery system your... Not be able to spin or generate air flow blades will not be able to spin generate! Work by unplugging them and run jumper wires to the health of the.. Blades to pull air through the radiator and be damaged modern vehicles, the fan connectors 2019: the! Problem is the cooling fan relay the blades will not be able to spin or generate air flow 2019 check... Fan relay the driver of a potential problem with the cooling fan resistor will a., 2019: check the condenser for clogging ( bugs, debris ) that can alert the driver a. And run jumper wires to the health of the engine controlled electric fan comes. Driver of a potential problem with the cooling system in your vehicle is of importance... Vehicle is of paramount importance to the fan connectors or generate air flow to check is for power the. Fan relay verify that the fans work by unplugging them and run jumper wires to the health of the.! Be serviced unplugging them and run jumper wires to the health of the engine may necessary... Few symptoms that can alert the driver radiator fan not working symptoms a potential problem that should be.. Engine could overheat and be damaged problem with the cooling fan relay is of paramount to., debris ) fan connectors for power at the fan ( s ) from the battery them run...