radiator fan fails to come on
#1
radiator fan fails to come on
My radiator fan fails to come on the fan itself is good iv replaced the radiator fan switch replaced the thermostat brand new radiator fuse and relay are good when i jump the fan out it comes on the only thing i can think of is i bought a defective radiator fan switch but i dont know any help would be greatly appreciated.
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#10
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Re: radiator fan fails to come on
Air not purged, bleed coolant
Thermostat stuck closed.
Thermister bad or giving false readings due to trapped air.*
Thermoswitch bad. Test the thermoswitch by boiling at Procedure 5.
Water pump impeller missing caused by electrolysis. Open filler cap, water should flow with thermostat removed or when the engine is at operating temperature.
Thermostat stuck closed.
Thermister bad or giving false readings due to trapped air.*
Thermoswitch bad. Test the thermoswitch by boiling at Procedure 5.
Water pump impeller missing caused by electrolysis. Open filler cap, water should flow with thermostat removed or when the engine is at operating temperature.
#11
#12
Re: radiator fan fails to come on
Air not purged, bleed coolant
Thermostat stuck closed.
Thermister bad or giving false readings due to trapped air.*
Thermoswitch bad. Test the thermoswitch by boiling at Procedure 5.
Water pump impeller missing caused by electrolysis. Open filler cap, water should flow with thermostat removed or when the engine is at operating temperature.
Thermostat stuck closed.
Thermister bad or giving false readings due to trapped air.*
Thermoswitch bad. Test the thermoswitch by boiling at Procedure 5.
Water pump impeller missing caused by electrolysis. Open filler cap, water should flow with thermostat removed or when the engine is at operating temperature.
#14
#15
Re: radiator fan fails to come on
By the way, the fan takes a real long time to kick on.
Also, did you use an OEM new switch or an aftermarket switch? Sometimes with the aftermarket ones the harness will not click on, mine did not click, I had to really push it on it to make a connection.
#16
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Re: radiator fan fails to come on
Don't think it's been said, but what about your coolant temp sensor?? If the temp is off it won't tell the relay that drives your fan switch to engage... since you've jumped the fan switch, you've ruled out the fan switch...
Last edited by Civic2Fast; 02-14-2012 at 09:22 AM.
#17
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Re: radiator fan fails to come on
because no ones ever bought a crapped out fan switch before. have you tried another one besides just its new? where from?
#18
Re: radiator fan fails to come on
They are pretty good, it is tube with blue fluid, you pump it, if it turns yellow you have a problem.
By the way, the fan takes a real long time to kick on.
Also, did you use an OEM new switch or an aftermarket switch? Sometimes with the aftermarket ones the harness will not click on, mine did not click, I had to really push it on it to make a connection.
By the way, the fan takes a real long time to kick on.
Also, did you use an OEM new switch or an aftermarket switch? Sometimes with the aftermarket ones the harness will not click on, mine did not click, I had to really push it on it to make a connection.
#19
#20
Re: radiator fan fails to come on
no i havent checked it and i only jumped the fan switch to see if my fuse and relay were good which they are but im pretty sure i have a blown headgasket cause theres so much air in my cooling system iv tried to bleed it twice the first time was for about an hour and the air just got worse almost to a foam and iv read that all that air will give your fan switch an inaccurate reading which is what i believe is happening but i havent done a block test yet
#21
Re: radiator fan fails to come on
They are pretty good, it is tube with blue fluid, you pump it, if it turns yellow you have a problem.
By the way, the fan takes a real long time to kick on.
Also, did you use an OEM new switch or an aftermarket switch? Sometimes with the aftermarket ones the harness will not click on, mine did not click, I had to really push it on it to make a connection.
By the way, the fan takes a real long time to kick on.
Also, did you use an OEM new switch or an aftermarket switch? Sometimes with the aftermarket ones the harness will not click on, mine did not click, I had to really push it on it to make a connection.
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