LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Fans Won't come on...

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Old 08-21-2004 | 01:23 PM
  #1  
Super Slow '97's Avatar
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From: Marietta, Georgia
Fans Won't come on...

The cooling fans are not turniong on when the car hits the temp. for them to turn on. The car was almost to 210 deg and nothing was happening. I checked the relay by swapping it with another so I guess that is not the problem, and I know the fans work b/c I have a fan switch for the track and the fan works when I throw the switch. Help... Please....
Old 08-21-2004 | 08:33 PM
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Dave '97 Z28 M6's Avatar
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From: S. Ontario, Canada
Re: Fans Won't come on...

The fans won't turn on until you're well over 210. I think 224 is the stage 1 turn on temp.
(assuming you've got a stock set-up)
Old 08-21-2004 | 09:41 PM
  #3  
Super Slow '97's Avatar
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Re: Fans Won't come on...

everything has been re-programmed when I did the cam swap the car has never gotten above 180 since all the peramiters were changed on the fans.
Old 08-21-2004 | 09:52 PM
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From: Little Rock, AR
Re: Fans Won't come on...

What temp do you have them programmed for? Got a scanner to look at what the PCM is seeing for temp? May be a temp sensor problem.
Old 08-22-2004 | 09:20 AM
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Super Slow '97's Avatar
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From: Marietta, Georgia
Re: Fans Won't come on...

I can get a scanner on monday to check it out I had the SES light come on also, But I thought it was because I was running racing gas the night before and it might have thrown a code b/c of the lead in the gas. Could a bad sensor throw a code?
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