Coolant fan Problem....
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 53
Likes: 0
From: Hampton,Va
Coolant fan Problem.... the fans never come on until I pull the temp sensor plug. then they never stop. the sensor has about 100 miles on it and I honestly think that this has been going on since before that. any ideas!!!!!!!!!!
TECH Veteran
Joined: Dec 2008
Posts: 4,147
Likes: 62
From: Little Rock, AR
http://shbox.com/1/4th_gen_tech2.html#cooling
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 53
Likes: 0
From: Hampton,Va
Are you sure you understand how/when the fans are supposed to work? I don't know what you know about the system. Some people think there is something wrong when there is actually not and you really don't give any symptoms of what it is doing.
http://shbox.com/1/4th_gen_tech2.html#cooling
http://shbox.com/1/4th_gen_tech2.html#cooling
As far as the relay I would think that if its bad they wouldn't run at all because there would be no connection.
Thanks for the input guys by the way!!!
TECH Veteran
Joined: Dec 2008
Posts: 4,147
Likes: 62
From: Little Rock, AR
Like I said, I don't know what you know about the LT1 cooling system. Some people think the fans should come on way before they actually do. Hopefully, you can find some help in the info link I posted.
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Registered User
Joined: Mar 2011
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My Camaro would run fine at speed on the freeway, as soon as I would start cruising town temp would climb over 210. Maybe get to 240 or so, but would not get into the red. Telling me that the thermostat and pump were working just not the fans. The car would also get hot if I let it idle too long. After putting in a Casper Electronics fan bypass switch I can turn them on in the staging lanes or if I am in town. Haven't had a problem since. You could always change out the fan relays or check to make sure your fans are working. Thermostats are easy to replace, so are the fan relay switches which are in your fuse box under the hood, the bypass switch takes ten minutes.
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when i put headers on my car i didnt have the o2 sensors plugged in for the first start up and my fans never kicked on at all and after i plugged them in the fans ran regularly as they should so that might be something to check out
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 53
Likes: 0
From: Hampton,Va
cool after reading the link shbox gave me and making absolutley sure the radiator was topped off, It seems to be fine. Check the link it may not be getting as hot as you may think.
http://shbox.com/1/4th_gen_tech2.html#cooling
http://shbox.com/1/4th_gen_tech2.html#cooling
