The fans normally come on when needed. Is the car running hot -- is the temperature gauge reading above normal? If so, there's a problem with the fans or the cooling system. If not, don't worry about it.
Problem with the temp sensor.
Check the thermal relay for the cooling fans.
The radiator hoses will need to be disconnected. Remove the cooling fan. Unbolt the radiator and any shroud surround and the radiator will come out. Reverse to install.
The 2 lines that come from the transmission and go to the radiator are full of transmission fluid and the radiator is what cools it.
If the car came with A/C, it would have had the 3-row radiator and a cooling system capacity of 14.7 Qts. If the car did not come with A/C, it would have come with the 2-row radiator and the cooling system capacity would have been 13.4 Qts.
A few posibillities. Cooling system level low. Cooling system air locked. Radiator fan switch faulty. Head gasket failiure.
Check the following............................. 1. Cooling fan operation. 2. Radiator cap. 3. Thermostat.
While your car is running the engine is heating up. While your driving you have air being forced over the radiator cooling it off. When you are sitting still you don't have that air so your engine is heating up even more so the cooling fan comes on to help cool you engine off. Via cooling the radiator.
the radiator cap is located on the radiator which is the the thin rectangular block with lots of cooling fins. when you open the bonnet itsnearest thing to the bonnet release. Its possible that your car did not come with a radiator cap since it was an optional item.
fan2 should come on when the a/c is on. so both fans should be running when the a/c is on. when the a/c is not on, the driver side fan should come on when engine temperature gets up to 210 degrees. What would cause fan 1 to not come when a/c is running
If you have replaced the relays in your 1997 Toyota RAV 4, the engine cooling fan may not come on when it is supposed to because of a failure in the wiring, the thermostat that sends to the fan, or the fuse for the cooling system.
== == Cooling fans are designed to start at 235 degrees