fan switch?¿?

[pullerfan]

when i bought my car last summer it didn't have any fans in it. so because i was desperate at the time i put some out of a talon in it, well my condenser fan works just fine, but my radiator fan will not kick on. relays work just fine, and i bypassed it and the fan works, so my question is. Where is the "switch" that tells the relay to kick on the fan?

 

[DSMAdrenalinePS]

wouldnt it be a sensor. well i think either way screw the swith and wire the fan to an in car switch. thats what i did. when you are running hot flip it, racing flip it. I believe that in case the "switch or relay" is a computer thing so manual turnig the fan on is smart. computers or relas fail. go with a in car switch.

 

[pullerfan]

yea i understand that.. thought about doing it that way, but i'm not really a big fan of havin to flip it on. my car never runs hot so thats not really a problem.. but then again idk what it will do on these hot summer days, but as long as i have my a/c on i have one fan on

 

[Night479]

try a new temp sensor b/c that will tell it when to kick on.......right?

 

[luv2rallye]

Fan is controlled by the ECU based on the 2 wire (not 1 wire which is the gauge) temp sensor. Check it - should read 2.1 - 2.7k ohms at 68F and 260 - 360 ohms at 176F. Also check connector.