Radiator fans
Thread Starter
Instructor
Joined: Jul 2004
Posts: 130
Likes: 0
From: Naples FL
Radiator fans
I have a '92 LT-1. At what temp shoud the left(driver's side) fan come on? My right fan seems to be working OK i.e. comes on with the A/C. However, the left side does not seem to be working. Is there a relay or temp switch that comtrols it? Where might they be located.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
There indeed is a relay for each fan; the ECM usually runs only the primary fan, the secondary is for occasional use.
To test them jumper the ALDL pins A&B (upper right) with a paper clip and start the engine. The ECM should bring on both fans.
To test them jumper the ALDL pins A&B (upper right) with a paper clip and start the engine. The ECM should bring on both fans.
