Where do I find the fan temp switch?
Where do I find the fan temp switch?
The easiest place to first check would be in the relay socket. We know the circuitry and fans are ok, since they work with the a/c and DLC. It is just a matter of whether the PCM is commanding them on by temperature. It could end up being a PCM issue.
Where is the cooling fan relay ( or switch ) located?
Where is the cooling fan relay (or switch) located. I want to replace it in an attempt to get the fans to work again. Where is it located. The radiator cooling fans will not come and it causes overheating. It may be the fan relay or switch (whatever it is called).
Where is the temperature switch that controls the activation of the cooling fans?
Where is the temperature switch that controls the activation of the cooling fans. I suspect mine are not coming on and need to change the switch/sensor. PCM sensor is the one on the water pump. Don’t change stuff without diagnosing.
How does a cold engine switch work on a fan?
That sender contains a switch, rather than a variable resistor, and is either on or off. A cold engine will provide an open circuit, and no current can flow from the sender to the fan relay. Once the temperature rises to a set level, in this case about 185 degrees, the switch closes.
Where is the radiator fan switch?
The radiator fan control switch is located on the transmission side of the engine near the EGR valve in same location as the coolant temp sensor for the Fuel Injection ECU.
What is a temperature control switch?
The temperature control switch is the user control interface for the A/C system. It allows you to change the temperature inside the passenger cabin.
What is a thermal fan switch?
The fan switch is a temperature sensitive two stage thermal switch that remains open (OFF) until the coolant reaches a certain temperature. The 2-stage thermal switch essentially is 2 thermal switches that have been combined into one thermal switch.
Where is the cooling fan sensor located?
The coolant sensor is typically located near the thermostat housing in the intake manifold. On a few vehicles, the coolant sensor may be located in the cylinder head, or there may be two coolant sensors (one for each cylinder bank in a V6 or V8 engine) or one for the PCM and a second for the cooling fan.
What should the fan temp be for low speed?
I ended up editing the fan turn on temperature to 200*F for low speed and 210*F for high speed. That makes the gauge look like the fan is coming on at the stock temperature. Does anyone have a suggestion as to why I am seeing this difference?
Why do the fans not come on when the a / C is turned on?
The fans do also come on when the a/c is turned on but they will not come on when the check gauges light comes on (cause it is too hot) I usually try to shut the car down at 235-240 if the fans don’t come on but this last time the ignition switch stuck in run and I couldn’t get it turned off quick enough.
The easiest place to first check would be in the relay socket. We know the circuitry and fans are ok, since they work with the a/c and DLC. It is just a matter of whether the PCM is commanding them on by temperature. It could end up being a PCM issue.
Why do I have a GM 3 relay fan?
I try to show people how they can diagnose, fix and repair things themselves, grow their own food and preserve and store it. I strive to do something everyday to become more self sufficient; to be closer to my food, spend more time with my family.
I ended up editing the fan turn on temperature to 200*F for low speed and 210*F for high speed. That makes the gauge look like the fan is coming on at the stock temperature. Does anyone have a suggestion as to why I am seeing this difference?
Where is the temperature switch that controls the activation of the cooling fans. I suspect mine are not coming on and need to change the switch/sensor. PCM sensor is the one on the water pump. Don’t change stuff without diagnosing.
