3.4l V6 Electric fan not kicking on?
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November 2010 ROTM
October 2011 ROTM
October 2011 ROTM
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3.4l V6 Electric fan not kicking on?
This has been an issue ever since I rebuilt my motor and put it back in. Basically the car will get really hot and the fan won't turn on? Any suggestions? Right now I have a wire ran to a switch in my car that goes to the relay to turn it on via the switch, but before it wouldn't ever kick on.
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Mine did this when I bought it. There's a temp sensor under your upper intake manifold that can be switched out. That's what was wrong with mine. The sensor was bad and wasn't sending signal to the fans to turn on.
Tech Droid
Joined: Aug 2005
Posts: 9,215
From: North East PA
Try this test procedure
https://camaroforums.com/forum/93-02-general-41/quick-test-engine-fans-54192/
https://camaroforums.com/forum/93-02-general-41/quick-test-engine-fans-54192/
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November 2010 ROTM
October 2011 ROTM
October 2011 ROTM
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Try this test procedure
https://camaroforums.com/forum/showthread.php?t=54192
https://camaroforums.com/forum/showthread.php?t=54192
so maybe that would cause the fans not to turn on?
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November 2010 ROTM
October 2011 ROTM
October 2011 ROTM
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From: Maryland
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I don't have the hose connected to the brass colored box to the left of the alternator. So I'm guessing that the two connectors not being plugged in would cause my fan not to work? Hose seen here:
Newbie
Joined: Dec 2011
Posts: 2
From: Tennessee
220 degrees fahrenheit
Your ECM doesn't kick in the main fan til 220 degrees fahrenheit. Thats normally 3/4 of the way to red. The only way to change that is to get another Coolant sensor on a different scale but is still close.
BTW your main fan is turned on by the ECM grounding the FAN RELAY. The ground(-) from the ECM(Green wire) tells the RELAY to turn on the fan. Then it sends power if the key is ON. the relay is energized when the key is ON but needs the ground to switch the relay.
The green wire from the ECM travels right past the battery so you can just pull it out and ground it there to always have the fan on when you have the Key to ON. Better yet you can splice into it and send a wire to the dashboard with a switch. On the other pole of that switch just attach it to ground with a screw. Then when you switch it to ON the relay will get a ground and turn on the fan and you won't have to deal with any volts so it can be a cheap switch.
BTW your main fan is turned on by the ECM grounding the FAN RELAY. The ground(-) from the ECM(Green wire) tells the RELAY to turn on the fan. Then it sends power if the key is ON. the relay is energized when the key is ON but needs the ground to switch the relay.
The green wire from the ECM travels right past the battery so you can just pull it out and ground it there to always have the fan on when you have the Key to ON. Better yet you can splice into it and send a wire to the dashboard with a switch. On the other pole of that switch just attach it to ground with a screw. Then when you switch it to ON the relay will get a ground and turn on the fan and you won't have to deal with any volts so it can be a cheap switch.