My cooling system fan does not turn on while I am driving
Like to try to see if it is a fuse. What amps will it be and will it be a regular fuse or the square shape housing ones. and does it have a stock Number of some kind? Thanks ......It went out on me a while back, I was parking in my driveway and it ran real fast and loud and it just stopped after that and never came back on.
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Re: My cooling system fan does not turn on while I am...
Should be a 40amp maxi fuse in underhood fuse block..will be labelled in fuse block..possible broken wire at solid state relay approx 3-4 inches from relay connector..relay located on driver's side frame rail under battery tray..relay could be faulty also
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replace the coolant sensor unit as that is where the ECM gets the signal from to activate the relay that turns on the fan
check all fuses 2 or more in that circuit have the system checked by an accredited auto electrician before you do any thing so drastic
Check for a blown fuse----look at it & test it
Check for & TEST any fan relays-have to remove them to do so
Then unplug the cooling fan & put battery voltage to it
If the fuse is good,the relay works,the fan works,you may need
a wiring diagram & do some internet searching to find a temp sensor or switch--odds are it will be in the radiator or cooling system somewhere.
Check for wire connectors being off
Have to check the radiator for leaks & the coolant system
for leaks & at least partially remove the radiator, to get rid of
leaves & other road dibris,bird feathers & such
Try unplugging the air conditioner compressor under the hood. There should be a plug near to its pulley. With the compressor unplugged, try turning the fan switch to AC again & see if it still blows the fuse. If it does, there's a problem somewhere in the wiring between the switch and the compressor. If not, the problem is in the compressor's pulley clutch.
Well the code is for the circuit - the computer commands the relay to turn the fan on and it doesn't happen. The computer provides the ground for the relay. If you have replaced the relay and the fan and the fuse still blows, I would look for a problem in the harness between the fuse box and the fan, including the ground circuit for the fan. The fuse for the cooling fan is usually a 30amp marked "cooling fan" in the fuse box in the engine compartment. Do you know what the 25amp fuse that is blowing is for ?
These fans should turn on at about 220 degrees, give or take a couple, and then turn back off at about 210 degrees.Fans should also come on when engine is idling with the a/c on [provided the a/c works of course] If the fan[s] isn't running and the gauge is over about 3/4 of the way or will go all the way to the end then odds are your fan's aren't capable of working for some reason. The classic symptoms of a cooling fan not working are what you are describing: Cools fine at highway speeds, overheats at slow speeds. I would start by checking the cooling fan fuses located in the underhood fuse panel. I believe they are marked Cooling fan 1 and Cooling fan 2 and both should both be 30 amp fuses. If the fuses are good then you might have problems with the fan motors themselves. Hope this helps you get it working again!
Here is a wiring diagram of how you should by-pass that cooling fan by using a toggle switch, and you can get a fuse holder and use a 30 amp fuse instead of a 30 amp circuit breaker, but you should use the circuit breaker since you are no longer using a relay, and if there is a voltage spike the circuit breaker will reset itself, and a fuse will blow out and you will have to change it. Most auto parts stores will carry the 30 amp toggle switch and circuit breaker, also be sure to use 10 ga. wire and do not forget the wire connectors that you will need to attach the wires to the toggle switch, the circuit breaker, and to the battery as well as the connection to the cooling fan wires.
This wiring diagram is very basic and you should be able to follow it with little difficulty, and you should also dis-connect the cooling fan at the wiring connector to the cooling fan and connect the by-pass wiring directly to the cooling fan motor so that you do not run voltage back through the stock system. Let me know if you require further assistance.
Try turning on the a/c while you are driving or sitting still and one of the fans should kick on. You will have an a/c fan which will only turn on when the climate control is operating. The second fa is a cooling fan that kicks on when the coolant temperature rises above about 190 degrees or more. Check the sensor, relay and fuse for the cooling fan and the relay and fuse for the a/c fan. Your engine may not get hot enough to need the fan so you may have no problem.
If your cooling fan is not working you solved your own problem. The cooling fan is what helps your radiator perform its function. The radiator cools down the antifreeze mixture by separating it into small tubes separated by air fins, the fins allow a greater surface area for air. The radiators main function is to dissipate heat into the surrounding atmosphere which it can do well at highway speeds without a fan, but most modern cars need a cooling fan to help pull air across the radiator.
The wiring diagram for your vehicle suggests that there is a 5 amp fuse 4 and a 40 amp fuse 42 that run the radiator fan and control which should be located in an under hood fuse/relay box. Check them with a test light on both sides, with the light to ground you should see a positive voltage at both sides. the 40 amp would most likely be a maxi fuse, or a larger size then the regular atm fuse for the 5 amp,
Above is the diagram for a 4 cylinder. It appears that you might have a fusible link which looks like a regular wire instead of a regular fuse. If you have A/C on your car you can turn it on and this automatically should turn the cooling fan on. If I remember correctly these cars have problems with the Coolant temperature sensor located near the thermostat. It will have one yellow wire going to it. You can also try to swap the cooling fan relay with the horn relay or another relay that looks similar under the fuse block. There should be a diagram of the fuses and relays under the cover. Try with the engine off and key out try to turn the fan by hand. If it does not move freely the cooling fan motor is bad. Other than that you will have to bring to a shop to have the circuits tested... Good luck.