Cold Case Electric Fan Wiring Diagram – First, I apologize if this information is off topic. I searched a lot and couldn’t find it. I found the diagram attached but was hoping someone could help with the parts. I know there are popular fan conventions out there (Taurus, Intrepid, etc.) but this is other stuff I want to know about. Has anyone tracked down the part numbers for these things to make it easier for me to replace the budget fans?
I would go to your local parts store and buy an electric fan controller. Depending on what your thermostat is, they come in several types. I recommend buying one with an adjustable on/off set point and a temperature probe screw.
Cold Case Electric Fan Wiring Diagram
This is exactly what I had installed on my car from a 96 Chrysler Cirrus with two valves.
Electric Fan Help
I use a Ford Thunderbird fan and a Volvo fan controller and a BMW Temp switch. You can google “Volvo Fan Controller and Ford Taurus Fans” and you will get many results. The temperature switch closes at 195°F, then the fan turns on. The BMW switch is cool because it has two temps for two fan speeds.
I think I paid $150 for everything. I cut the electric fan cover to fit my stock and it turned out perfect. I can’t say that!
This schematic looks like it’s from someone’s “kit” and isn’t very useful for DIY. In case you don’t have enough electronic spaghetti in your life, here’s a dual speed/dual fan diagram I drew:
If you get a 300M fan from the junkyard, it has 2 relays installed that can be made to the shown SPDT, then you need two SPST relays for the “Fan On” and “Hi/Lo switch” relays. Junkyard usually sells 300 million fans for around $35 and most junkyards have a few of them.
Heat Recovery Ventilation
At low speeds, this setup only draws about 3 amps, so the ignition isn’t a big hit.
UNGN said: This schematic looks like it’s from someone’s “kit” and isn’t useful for DIY. If you don’t have enough electronic spaghetti in your life, here is a two speed/dual fan diagram I drew: View Attachment 63569 If you get a 300M fan from a junkyard with 2 relays built in, it can be done. If SPDT is specified, you only need two SPST relays for the “Fan On” and “Hi/Lo switch” relays. Junkyard usually sells 300 million fans for around $35 and most junkyards have a few of them. At low speeds, this setup only draws about 3 amps, so the ignition isn’t a big hit. Click to expand…
If I want to install a 300M fan where would be best to get a SPST relay? And what other temperature sensor should I know to use correctly?
Fig865 said: If I find a 300M fan setup, where would be the best place to get SPST relays? Click to expand…
Jegs 19713: Wiring Diagram
Any auto parts store like O’Reilly’s or Autozone will have relays/hardware. They are cheaper than E-bay. You need a 30 amp relay. Many rigs use different colored wires than what I have shown. The wire colors on my diagram correspond to the colors/pole numbers marked on the relay.
My Grand Prix garbage disposal uses a Taurus fan. I run it with a junk Volvo fan relay and only use it on the LOW speed setting. Currently I have a switch on the dash to send a (low power) ground signal that turns off the relay and turns on the fan. Since the Volvo relay is powered, I didn’t need to buy any equipment other than the switch I already had. (I didn’t install a temperature sensor specifically for this because I’ll be installing a FiTech EFI soon and it can send the ground signal I need.)
BTW: SPST relays are as common as dirt. You can find them at all AutoZone/O’Reilly’s/etc stores, plus Wal-Mart and others. I’ve embedded some of them below for other features.
Fig865 said: Which temperature sensor should I use correctly? Click to expand…
Run Electric Motor Cw & Ccw With Dp Dt Switch
25036371 is an 86-87 GN switch that should go there about 195 degrees. You can get these on Ebay or get a current equivalent such as AIRTEX/WELLS 1T1011.
Amazon Services LLC is a participant in the Associates Program, an affiliate advertising program designed to provide websites with a means to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply and the AmazonSupply logo are trademarks of Amazon.com, Inc. or trademarks of its affiliates. My engine fan comes on when I turn on the ignition but not the engine. Why do this?
I have a 1999 Toyota Corolla and when I turn on the ignition the fan comes on without the engine running. Engine cold and all. I researched and found out which relay switches were for each fan and replaced them, replaced the engine coolant sensor near the thermostat and replaced the computer. All spare parts used. The relays were cleaned, but had the same number of 6 common relays and 2 sensors. There is no way all the relays and sensors are bad and the computer I ordered was also used. I don’t trust his computer but wanted to try. The car does not overheat or have other faults. My only concern is that the fan may burn out from constant operation and I would like to know what happens to it. Do you know what it could be?
Some can get you to wire the fan directly to the battery so the fan can turn on when the car is turned on. they can do it because maybe the second fan is broken (my corolla has two fans). you also know that the plug connected to the thermostat housing will keep the fan on all the time if it is not connected, this is a safety measure when the thermostat locks up.
Amazon.com: Aluminum Fan Shroud For 31 Inch Radiator, Dual Electric Fans
See attached picture. The engine’s main relay (7) switches on when the ignition is switched on. The radiator cooling fan relay (8) is activated when the engine main relay (7) is activated and the engine cooling fan switches (10) are closed. The radiator cooling fan relay contact (8) is normally closed, so when the radiator cooling fan relay (8) is activated, the contact is open. When the engine is cold, the engine cooling fan switch (10) is closed. Therefore, when the ignition is on and the engine is cold, both relays are energized and the cooling fan motor (9) receives no power because the contacts on the radiator cooling fan relay (8) remain open. When the engine coolant reaches temperature (90C), the cooling fan (10) opens and this interrupts the current to the coil of the radiator cooling fan relay (8), causing it to deactivate and “drop”. The contact on the radiator’s cooling fan relay (8) is normally closed, so the relay closes when triggered. This provides a current path to the cooling fan motor (9) and the cooling fan runs. Diagnosis: If you notice that the cooling fan motor (9) runs when the ignition is on, either the relay contact is permanently shorted (Closed) or the cooling fan (10) is stuck in the open position. . In any case, the failure was “safe” because the ventilator was operating when it failed. In cases where the cooling fan (10) is stuck in the closed position, an example of a “dangerous” fault as explained in this video: https://www.youtube.com/watch?v=-KVwivQaerE Fix: Try relay click test as in the video above. Then remove the relay and measure the voltage across the relay coil contacts. If there is no voltage and you hear a click, the cooling fan (10) is stuck in the off position. If there is voltage, but you do not feel a strong click (but there is a weak click), then the relay contacts are welded using arc current. If this is the case, sometimes giving the relay a sharp blow on the flat surface, breaking the contacts one way on each side, will temporarily cure the problem. If, however, you disconnect the radiator cooling fan relay (8) when the engine is cold and the ignition key is on and the cooling fan is still running, then there is a short circuit between the main engine relay (7). power connector and cooling fan motor (9) The video above is for that
Fan motor wiring diagram, fan switch wiring diagram, electric fan motor wiring diagram, cold room wiring diagram, bathroom fan wiring diagram, house fan wiring diagram, fan controller wiring diagram, blower fan wiring diagram, ceiling fan wiring diagram, electric cooling fan wiring diagram, fan coil wiring diagram, casablanca fan wiring diagram