Test Fans without Running to Temp?
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: Test Fans without Running to Temp? (Southern Comfort)
You need to ground the A terminal to the B terminal in the ALDL connector under the dash. That will energize all the relays except the fuel pump. ( at least that is the senario on my 92)
[Modified by ittlfly, 11:51 AM 6/30/2003]
[Modified by ittlfly, 11:51 AM 6/30/2003]
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 5,203
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From: Las Vegas Nevada
Re: Test Fans without Running to Temp? (Southern Comfort)
using octane boost :auto:
According to some, shorting A to B will retrieve codes. Are you saying that with the engine running it will trigger relays?
[Modified by Southern Comfort, 12:06 PM 6/30/2003]
According to some, shorting A to B will retrieve codes. Are you saying that with the engine running it will trigger relays?
[Modified by Southern Comfort, 12:06 PM 6/30/2003]
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Test Fans without Running to Temp? (Southern Comfort)
Jumpering the ALDL will test the main fan (behind the radiator); to test the aux fan in front of the radiator (if so equipped) jumper the aux fan switch lead to ground and turn the ignition on.
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Test Fans without Running to Temp? (Southern Comfort)
The aux fan switch is located in the block below #1 & #3 spark plugs. It's Grn wire runs into a harness along the left inner fender well.
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Safety Car
Joined: Feb 1999
Posts: 3,504
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From: Mexico Beach FL
Re: Test Fans without Running to Temp? (Southern Comfort)
Can you test the fans without running the car to the trigger points for normal operation?
http://www.vetronix.com/diagnostics/mts3100/index.html
Tom Piper
Team Owner
Joined: Dec 2000
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From: SE NY
Cruise-In II Veteran
Re: Test Fans without Running to Temp? (Southern Comfort)
That may test the main fan but not the aux fan on an L98; as the aux fan is only controlled by the aux fan switch and not at all by the ECM.
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Re: Test Fans without Running to Temp? (65Z01)
The aux fan switch is located in the block below #1 & #3 spark plugs. It's Grn wire runs into a harness along the left inner fender well.
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