Fan Clutch Failure?
Drifting
Joined: Apr 2007
Posts: 1,970
Likes: 45
From: Cameron Park CA
Tongue in cheek, but true.
You could try driving in stop and go traffic on a freeway for half an hour on a warm day. If the car doesn’t overheat, your fan clutch is good. Mine overheated in circumstances like that so I replaced the fan clutch with a GM clutch and my overheating problems want away.
You could try driving in stop and go traffic on a freeway for half an hour on a warm day. If the car doesn’t overheat, your fan clutch is good. Mine overheated in circumstances like that so I replaced the fan clutch with a GM clutch and my overheating problems want away.
Melting Slicks
Joined: May 2002
Posts: 2,474
Likes: 756
From: Laporte, IN
One method is to use a heat gun or hair drier. Check the resistance of the fan to rotate when engine is cold then. Heat the coil spring or bimetallic bar on the front of the clutch. Resistance should be significantly higher when heated.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,117
From: Crossville TN
Run the car long enough for the engine to heat so fan will be engaged (slow speed, A/C ON, etc.). Pull over (leave engine running), lift hood and while watching the fan rotation, turn ignition OFF. If the fan stops rotating after 2-3 rotations, the thermo unit is working just fine. If it slowly coasts to a standstill, it didn't get hot enough or the thermo fan isn't working.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,185
Likes: 9,324
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
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or once its good an hot, shut off the engine and give the fan a twist with your hand, it should be tight when its hot and spin real easy when its cold.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Burning Brakes
Joined: Sep 2018
Posts: 1,002
Likes: 410
KIRKCONNELCORVETTES who rebuilds the Schweizer fan clutches says... with the hood up and engine at temperature - cut the engine off, if the fan continues to spin more than a turn it needs rebuilding, if it wobbles it needs to be rebuilt.
The charge was $250 turned around in 10 days. .
The charge was $250 turned around in 10 days. .
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