How do you check to see if a clutch fan it's functioning properly?

10

Asked by Aug 25, 2014 at 11:20 AM about the 1989 Chevrolet C/K 3500

Question type: Maintenance & Repair

I've rodded the radiator, changed the
thermostat and verified the water pump is
working. All I can figure is maybe the clutch
fan needs replaced but when I kill the motor
the fan stops spinning immediately. What
else could it be? Also no water in the oil so I
don't think it's a head gasket.

6 Answers

56,675

With the engine off, grab the fan blades and try moving it side to side. If there's play the clutch is bad. However by what you described it sounds like the clutch is locked up. The purpose of a fan clutch is to actually limit the fan rotation. If you can hear it roar, especially when accelerating, it's locked up. With the engine off and cool it should spin with a little resistance. HTH. -Jim

10

It does spin with little resistance. It doesn't run like it's hot. I'm going to replace the temp sensor and see if I'm getting a false reading

210,105

If you try to spin the fan, it should not rotate more than 180 degrees or make any sound.

56,675

Sounds like the clutch is ok. Did you upgrade the radiator when you did the motor work? That could be it. HTH. -Jim

First I ever and 0r seen an electrically operated fan clutch. I purchased a 2004 trailblazer . Bought it at a fair fair fair price and it had lack of power. Sounded like an Cessna 150 with props feathered out. I change the serpentine belt and corrected the problem. My method of mechanics is the process of elimination.

First I ever and 0r seen an electrically operated fan clutch. I purchased a 2004 trailblazer . Bought it at a fair fair fair price and it had lack of power. Sounded like an Cessna 150 with props feathered out. I change the serpentine belt and corrected the problem. My method of mechanics is the process of elimination. L f

Your Answer

Add photo

Related Questions

  • 1994 454 GAS MOTORHOME CANT FIGURE OUT WHATS WRONG WITH IT WONT RUN BACKIRES MISSES SURGING HARD STARTING SOMETIMES RUNS PERFECT FOR A SHORT TIME 18 answers

    i am a mechanic that is at the end of all options i have traced one problem to the next all of them changing it for the better in a way but ultimatly still far from a fix. let me tell you what i have ...

    1994 Chevrolet C/K 3500 Crew Cab 2WD

    -

    Maintenance & Repair

  • 1994 Chevy C/K 3500 DuallyBackfiring 1 answer

    My 1994 Chevy C/K 3500 Dually backfires when the engine is warm. It doesn't happen with a cold engine.

    1994 Chevrolet C/K 3500 Crew Cab 4WD

    -

    Maintenance & Repair

  • Clutch Fan 28 answers

    My clutch fan was engaged at idle and running fast. However I did not see any check engines to indicate a bad clutch fan. I checked the relay and fuse, I also checked there was power going to the plug...

    2004 Chevrolet TrailBlazer LS 4WD

    -

    Maintenance & Repair

  • how to rplace a clutch in chev calavier 2 answers

    i need to replace the clutch in my 2002 chev calavier

    2002 Chevrolet Cavalier

    -

    Maintenance & Repair

  • clutch problem 4 answers

    my pedal is soft and the 1 gear is hard to shift and the reverse grating. i have put a new clutch kit and i have change the master cylinder

    2003 Chevrolet Cavalier LS Sport Coupe

    -

    Maintenance & Repair

C/K 3500

Looking for a Used C/K 3500 in your area?

CarGurus has 254 nationwide C/K 3500 listings starting at $2,995.

ZIP:

Search Chevrolet C/K 3500 Questions

Chevrolet C/K 3500 Experts

#1 cooldad47
cooldad47
Reputation 180
#2 tennisshoes
tennisshoes
Reputation 100
#3 Dieselman1990
Dieselman1990
Reputation 90
View All

Related Models For Sale

Used Chevrolet C/K 2500
259 listings starting at $3,900
Used GMC Sierra 3500
3 Great Deals out of 287 listings starting at $7,450
Used Chevrolet C/K 1500
3 Great Deals out of 1,053 listings starting at $1,999
Used Ford F-350
344 listings starting at $8,990

Used Cars For Sale

2000 Chevrolet C/K 3500 For Sale
58 listings starting at $6,950
1998 Chevrolet C/K 3500 For Sale
35 listings starting at $7,500
1997 Chevrolet C/K 3500 For Sale
27 listings starting at $2,995
1996 Chevrolet C/K 3500 For Sale
18 listings starting at $9,954