Cooling Fan Trouble
Thread Starter
Intermediate
Joined: Sep 2005
Posts: 30
Likes: 0
From: Fort Worth Tx
Cooling Fan Trouble
My primary cooling fan is not turning on at all in my '85. I know it works because when I ground the ALCL terminals with the ignition on, it turns on. But, the only fan that is turning on with the car running is the aux fan at 239F. I dont think the problem is in the Fan Relay because then the fan wouldn't work at all, right?
Melting Slicks
Joined: May 2004
Posts: 2,524
Likes: 10
From: Lufkin Texas
St. Jude Donor '05-'06
Correct. If it were the fusible link or relay it wouldn't work with the ALDL test. This pretty much narrows it down to the temp switch. On my 90 it is activated by the ECM when the the CTS tells it the temps are up enough.
I'm not positive on an 85 but I dont think the ECM is in the mix. I think its just controlled by a temp switch mounted inbetween the #1 and #3 cylinder. I'm sure someone will chime in if I'm wrong.
Oh yeah, it should also work when you turn the AC on by way of the AC high pressure switch if it's just the temp switch.
I'm not positive on an 85 but I dont think the ECM is in the mix. I think its just controlled by a temp switch mounted inbetween the #1 and #3 cylinder. I'm sure someone will chime in if I'm wrong.
Oh yeah, it should also work when you turn the AC on by way of the AC high pressure switch if it's just the temp switch.
Last edited by skateparkdave; Feb 20, 2006 at 03:11 PM.
Team Owner
Joined: Jan 2003
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From: Summerland B.C. Canada
Thread Starter
Intermediate
Joined: Sep 2005
Posts: 30
Likes: 0
From: Fort Worth Tx
well, the fan is working now (i have no idea why). But, there is something else that has been bothering me. On the passengers side of the radiator, there is a hole that coolant is coming out of. It is the third hole down from the radiator cap under the overflow hose and the trans cooling line. What is this hole for and should coolant be coming out of it?
Melting Slicks
Joined: May 2004
Posts: 2,524
Likes: 10
From: Lufkin Texas
St. Jude Donor '05-'06
Originally Posted by AGENT 86
I just learned alot. But I'm still not at all positive which info was correct.
Melting Slicks
Joined: May 2004
Posts: 2,524
Likes: 10
From: Lufkin Texas
St. Jude Donor '05-'06
Originally Posted by darkprophet597
well, the fan is working now (i have no idea why). But, there is something else that has been bothering me. On the passengers side of the radiator, there is a hole that coolant is coming out of. It is the third hole down from the radiator cap under the overflow hose and the trans cooling line. What is this hole for and should coolant be coming out of it?
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by skateparkdave
I just learned alot. But I'm still not at all positive which info was correct.
RACE ON!!!
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