erratic cooling fan
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Pro
Joined: Feb 2002
Posts: 596
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From: Tollhouse Ca
erratic cooling fan
My fan never seems to come on at the same temperature twice. Since I bought the car it's been coming on around 210*, sometimes 215* and yesterday it went up to 230* before it kicked on.
So my question is this - from what I understand the fan is controlled by the computer. How can I tell if the temp sensor is the problem or if it's the computer causing the problem?
Also I'm thinking about adding an auxilary fan. I hate to spend $200 on a electric fan when I can go to a salvage yard and probably get one for around $20. Anyone have any first hand knowledge of slapping a generic fan with a manual switch on a Corvette?
So my question is this - from what I understand the fan is controlled by the computer. How can I tell if the temp sensor is the problem or if it's the computer causing the problem?
Also I'm thinking about adding an auxilary fan. I hate to spend $200 on a electric fan when I can go to a salvage yard and probably get one for around $20. Anyone have any first hand knowledge of slapping a generic fan with a manual switch on a Corvette?
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Joined: Apr 2001
Posts: 88
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From: oakdale,mn,u.s.a.
Re: erratic cooling fan (84FromHell)
On my Trans Am I just grounded the fan temp sensor with a toggle switch in between. It was a lousy quick fix when I was in a bind. On the Vette I replaced the fan temp switch with one from a Pontiac of some sort that had the same threads and plug but it turns on at, 216 I think? I went to a parts store that had pictures of fan temp switches and said what temp it came on. So I used the Pontiac? one. Works great.
Melting Slicks
Joined: Nov 2000
Posts: 3,388
Likes: 1
From: X
Re: erratic cooling fan (84FromHell)
thanks for the replies!
a new sensor is at the top of my shopping list :chevy :chevy :chevy
a new sensor is at the top of my shopping list :chevy :chevy :chevy
Thread Starter
Pro
Joined: Feb 2002
Posts: 596
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From: Tollhouse Ca
Re: erratic cooling fan (84FromHell)
JonM that sounds like what I'm looking for. Do you have a part # or an application so I don't have to spend $50 at Eckler's for a $15 sensor?
I checked with a parts guy today, he looked through his book and really couldn't help me much
I checked with a parts guy today, he looked through his book and really couldn't help me much
Melting Slicks
Joined: Nov 2000
Posts: 3,388
Likes: 1
From: X
Re: erratic cooling fan (84FromHell)
JonM that sounds like what I'm looking for. Do you have a part # or an application so I don't have to spend $50 at Eckler's for a $15 sensor?
I checked with a parts guy today, he looked through his book and really couldn't help me much
I checked with a parts guy today, he looked through his book and really couldn't help me much
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Drifting
Joined: Dec 1999
Posts: 1,751
Likes: 14
From: Wyckoff NJ
Re: erratic cooling fan (84FromHell)
I have this same problem w/ my fans running crazy.Trying to find out what is causing this the relays or fan switch.I have 200* fan switch w/ harness for both fans to go on the same time.It worked great for 2 yrs and mine is a 92.
