The cooling fan relay is normally located in either
the underhood fuse and relay center
or mounted to the electric fan assembly behind the radiator.
Where is the relay for cooling fan?
The fan relay is usually located
near the bottom of the engine compartment on a metal frame member
. The metal acts as a heat sink to keep the fan relay cool. So, unplug the connector at the relay and repeat the check for power. If you get power, you've got a bum relay.
How do I know if my cooling fan relay is bad?
- The engine runs hot or overheats. …
- The cooling fans don't work. …
- The cooling fans keep running. …
- Warning lights. …
- Poor air conditioning performance. …
- Swapping Relays. …
- Measuring the Relay Coil's Resistance. …
- Listening for Noises.
Where is the cooling fan module located?
The cooling fan control module in your vehicle is located
at the front left of the engine compartment next to the radiator
.
How do you replace a cooling fan relay?
- Materials Needed.
- Step 1: Locate underhood fuse/relay box. …
- Step 2: Remove the fuse/relay box cover. …
- Step 3: Identify the cooling fan relay. …
- Step 4: Be sure power is off. …
- Step 5: Replacing cooling fan relay.
What does a bad fan relay look like?
Engine running hot
One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. … If the relay shorts or fails, it will not be able to supply the power for the fans to operate and keep the engine running at normal temperatures.
Should radiator fan turn on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches
about 200 to 230 degrees
.
How do you check a fan relay?
- Look at the markings on top or side of the relay case and locate the two control circuit terminals, which connect to the relay's coil, and the two power circuit terminals, which let electrical current pass to the fan. …
- Connect the leads of an ohmmeter to the power terminals on the relay.
How do you check a relay?
- Locate the relay you need to test. …
- The quickest and easiest way to test a relay is to swap it out with a known good replacement. …
- Grab a multimeter and set it to Ohms. …
- Leave the multimeter on ohms or continuity. …
- Energize the electromagnet coil with a 9-12V battery across the pins.
What causes cooling fans not to come on?
Six things may prevent an electric cooling fan from coming on:
Defective temperature switch, coolant sensor or
other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay.
How do you test a cooling fan module?
The quickest way to tell whether or not the electric fan(s) are working is to
start the engine
. Then, let it reach normal operating temperature and then turn the A/C on. The cooling fan in the engine compartment, should turn on to pull air through the radiator and A/C condenser.
What sensor controls the radiator fan?
On most modern cars, the cooling fan is controlled by
the Engine Control Unit (ECU)
which gets a signal from the coolant temperature sensor.
How much does it cost to fix a cooling fan relay?
To get your cooling fan relay replaced, you will pay, on average,
$80-$160
, depending on the type of car you have and the mechanic's fees. The labor should cost around $70, while parts should run you $10-$50.
How much does it cost to fix a relay switch?
Depending on the cost of the item and labor, it will cost between $300 and $550 to replace one. Repairs for a faulty relay switch can cost
up to $200
.
How much does it cost to fix a cooling fan?
The average cost for a replacement fan is
between $634 and $789
. Labor costs are between $102 and $130 while parts are between $532 and $659.
