“Cooling Fan”
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Joined: Nov 2009
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From: Maple Grove Minnesota
“Cooling Fan”
I need the cooling fan on my 89 to come on sooner to keep the temp down around 190 degrees being I don’t have the L98 engine anymore.
Is the on/off temp imbedded in the computer chip or can I just get a different fan switch which I believe is on the intake?
Is the on/off temp imbedded in the computer chip or can I just get a different fan switch which I believe is on the intake?
Advanced
Joined: May 2010
Posts: 62
Likes: 0
From: Mulvane Kansas
The on/off is indeed controlled by the ECM. The relay is located on the driver's side fender. You could use a different fan control and wire to the relay, just understand that the ECM controls by switching the ground, not the power. Also note this is for the main fan, if you have an aux fan it is controlled by a thermal switch located in the drivers side cylinder head.
Thread Starter
Pro
Joined: Nov 2009
Posts: 583
Likes: 0
From: Maple Grove Minnesota
The on/off is indeed controlled by the ECM. The relay is located on the driver's side fender. You could use a different fan control and wire to the relay, just understand that the ECM controls by switching the ground, not the power. Also note this is for the main fan, if you have an aux fan it is controlled by a thermal switch located in the drivers side cylinder head.
Team Owner
Joined: Jan 2003
Posts: 20,298
Likes: 240
From: Summerland B.C. Canada
No, one side of switch to ground, the other side to fan relay's dark green/white wire.
