Which is the best static pressure fan for a radiator?
Here are the best 120mm high static pressure fans for use on heatsinks, 120mm/240mm/360mm radiators, CPU coolers, heatsinks and in restricted spaces. If you are only concerned about the quality and high performance then this is the best static pressure you can get for yourself.
How does a radiator fan control switch work?
The simplest form of radiator fan control is a switch that applies B+ voltage to the fan whenever the driver closes the switch, regardless of the ignition switch position. This arrangement is found on some race cars and custom vehicles.
Why does the radiator fan not run at highway speeds?
At highway speeds, when there’s sufficient airflow over the condenser and radiator, the switch stays open and the fan doesn’t run. When the vehicle slows or stops, the a/c pressure rises and the fan runs, regardless of engine temperature. In this arrangement the diode is not needed.
Why do you need a cooling fan relay?
Average rating from 29 customers who received a Cooling Fan Relay Replacement. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays.
The simplest form of radiator fan control is a switch that applies B+ voltage to the fan whenever the driver closes the switch, regardless of the ignition switch position. This arrangement is found on some race cars and custom vehicles.
How are the fans on a radiator powered?
The fans are powered by the battery bus and each fan is individually fused by F2 (main fan) and F4 (subfan)—except for low-speed operation! There are no temperature or pressure switches. ECT and a/c pressure are supplied to the ECU from threewire sensors (not shown in the figure) on the ECU’s 5V reference circuit.
At highway speeds, when there’s sufficient airflow over the condenser and radiator, the switch stays open and the fan doesn’t run. When the vehicle slows or stops, the a/c pressure rises and the fan runs, regardless of engine temperature. In this arrangement the diode is not needed.
How to remove a pressure switch from a radiator?
Now you can use an adjustable wrench to remove the old pressure switch (not sure of the size but it may be either a 24 or 26mm wrench). Note: You the pressure switch may be very tight. You may need to hold down the high pressure block that it rides on to avoid bending the A/C lines.