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Where is the reatator fan relay

The fan is good, but which one is the fan relay?

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My coolin fan wont come on wat should I do


Cooling fan is controlled by a relay and a temp sensor. You need to check that each piece is working.
Run power to the fan. fan run? fan ok.
Bridge the relay. Fan run? run power to the relay coil. Fan run? relay good.
find temp sensor. replace.

May 29, 2015 | Cars & Trucks

1 Answer

Radiator fans not working


disconnect the temperature sensor the fans should start in a few seconds that would mean your relay is good usually the fans work if the engine is full of anti freeze so the temperature sensor can kick relay then relay starts fans.

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1 Answer

Cooling fan wont come on car running at a high tem


You could verify fan motor is good by using jumper wires from battery to the fan motor. If the motor is good, you will probably need a wiring diagram and at least a test light to start checking the fan circuit. There will be a cooling fan relay that when signaled, will send power direct to the fan. The signaler to relay to turn the fan on may be the engine computer when the coolant temperature sensor tells it engine is getting too hot- or it may be signaled on by a fan temperature switch mounted in the radiator. When coolant reaches a set temperature the switch closes contact, and the relay is energized to pass power on to the fan. One could pull the relay and with key on, use test light to probe the terminals where relay plugs in. The power feed for the fan should light up the test light on one of the terminals, verifying power is still available to turn the fan on. Next one could check if the signaler to turn the relay on is working.
See? So you do need a wiring diagram to see how the circuit is wired. But the first step is to verify fan motor is good. Good luck, Nigel.

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The fuses are located in the fuse box under the hood, but could be the fan motor too, check if you have power at the motor

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1 Answer

Radiator fan is not working


Find out if the fan is good first. Use Jumper wires from the battery to the fan connector. If fan operates quiet and normal, check fuses for the fan. On a Chrysler, there is a 40 amp maxifuse that controls fan, for example. There would also be a relay for the fan, and that is controlled or activated by the engine computer. Relay would be in your relay center. The cover for it may be labeled to show which relay is for the fan. You may need to get handy with a testlight or voltmeter to fully diagnose your problem. Like testing the relay terminals for power at the power feed terminal, checking ground circuits, etc.
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1 Answer

Location of fan relay switch 1994 neon


The dodge neon fan switch is located on the front left inner frame behind the radiator, Take note this relay doesnt look like a normal relay, it looks like a module type, heres a picture of it. also take a look at the connector and make sure its not melting or rotted. the most common reason for a relay like this going bad is due to a bad fan, it draws to much, make sure the fan is good, replacing the relay with a bad fan will make the relay go bad in a few months,good day, hope this helps.johnjohn2_90.jpg

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1 Answer

Electric fan does not work


This can be due to a bad relay or coolant sensor that turns on the fan or a bad fan, a good test to do to see if the relay and the fan work is to start the engine and then turn on the ac, if the ac doesnt work then unplug the coolant temp sensor this will turn on the check engine light but it will reset when you restart engine, if the fan turns on then fan and relay are good and its the sensor, if the fan doesnt run then it may be the relay or fan, a quick test of the fan is to dissconnect plug to fan and run a power and ground wire to fan and if it runs then you have a bad relay,hope this helps,e0be4e7.gif

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1 Answer

My carhas been over heating and i noticed my fan is not working on my ratiator. could it be just a fuse


Could be a fuse or a relay, could be coolant temperature sensor/fan switch. It could also be that the fan motor has failed. If the fuse is good, test the fan and relay by jumping pins 30 and 87a at the rad. fan relay socket. If the fan comes on, replace the relay and retest. You can also check for 12v signal and ground on the other pins when the engine is hot to verify the temp. sensor is operating normally. If no 12v or if there is no ground on the rtelay control pins (NOT 30 and 87a), the sensor is probably bad. If the sensor is good and relay is good, 99.9% chance the fan motor is bad, even if it starts when relay is bypassed. The motor takes more power to start than to keep running, and can disrupt operation of the relay if it is marginal. Also look for corroded contacts, esp. ground wire connections.

Jun 21, 2010 | 2001 Dodge Stratus

1 Answer

96 honda civic cooling fan is not coming on. The fuse is good. Could it be the relay?


If the fuse is good, it could very well be the relay. To check the relay, remove the relay from plug and use a piece of wire stripped on both ends. Insert the wire into the plug and touch each plug to see if fan comes on. If fan comes ion after testing with wire, then the relay is bad. If fan does not come one, then the fan motor is bad.

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