Fan Clutch replacement - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Scrub · 10-21-2003, 01:20 AM

I never seem to have much luck with a fan clutch. I'm thinking about just hooking up direct and wearing earplugs.

OK so I loose a mile to the gallon and it's noisy. Any other negatives?

Any good suggestions? This is on a 6.2 diesel and the current fan clutch seems to wait until melting radiator parts come into contact before it kicks in. I mostly use it to pull trailers around. I don't have the bucks right now to spring for and electric setup.

Thanks in advance.

SWINGSAX68 · 10-21-2003, 02:45 AM

have you tried a new clutch before...from what I understand there are two different kinds...the super long lasting kind and the 1 year one. the super long lasting one would obviously be the more expensive one. What exact problems do you have with your clutch. I was wondering if deisel engine have an easy to change thermostat....I know you can use a lower temp thermostat on gas engines...maybe that may help you a bit. A new fan clutch should however make a considerable difference.Just from my expereince with fan clutches.

Scrub · 10-21-2003, 11:03 AM

The fan clutch just doesn't kick on until the temp is near 240. It is ok if I am just cruising, but pulling a load over the pass, it is not OK. I bought a hay swather and hauled it in several loads over the Cascade Range last week and I had to really work at not completely blowing my coolant out the top. Once the fan kicks in, it cools right down and stays there, but you have to keep the load on, or it will cool down too far and the fan turns off and then it heats up again. Pain in the rear!

Anyone have experience with Hayden fan clutches? My parts guy has one for $75.00. I have bought the cheapies before and had terrible luck, so I am hesitant.

tom hand · 10-21-2003, 11:40 AM

Two things come things come to mind...have you verified that it actually that hot and you are not getting worried over an incorrect guage? Is your fan shroud in place and undamaged? The fan shroud is very important with a fan clutch because the heated air needs to be pulled over the clutch so it turns on at the correct time

10-21-2003, 01:20 AM	#1
Scrub Collector of rusty Items Join Date: Dec 2001 Location: Sisters,Oregon USA Posts: 731	Fan Clutch replacement I never seem to have much luck with a fan clutch. I'm thinking about just hooking up direct and wearing earplugs. OK so I loose a mile to the gallon and it's noisy. Any other negatives? Any good suggestions? This is on a 6.2 diesel and the current fan clutch seems to wait until melting radiator parts come into contact before it kicks in. I mostly use it to pull trailers around. I don't have the bucks right now to spring for and electric setup. Thanks in advance. __________________ Scrub Sisters, Oregon - Home of the Sisters Rodeo. 70 GMC 1,000,000 + miles 72 K-20 project, 456 Dana60 front, Corp14 rear w/locker, 265R19.5 tires 20-ply. Warn 12k winches both ends, Cross-over steering with raised tie-rod, Powerbox steering, 4500 watt 120-AC power, Air, Hydraulic aux power, 4 inch lift, 5000 lb air-bags both ends.

10-21-2003, 02:45 AM	#2
SWINGSAX68 Now the others dig........ Join Date: May 2002 Location: San Antonio, TX Posts: 1,520	have you tried a new clutch before...from what I understand there are two different kinds...the super long lasting kind and the 1 year one. the super long lasting one would obviously be the more expensive one. What exact problems do you have with your clutch. I was wondering if deisel engine have an easy to change thermostat....I know you can use a lower temp thermostat on gas engines...maybe that may help you a bit. A new fan clutch should however make a considerable difference.Just from my expereince with fan clutches. __________________ 68 Chevy C10 Stepside Black Primer 78 GMC Longbed White 09 Chevy Silverado Shortbed Granite Blue *LOOKING FOR A 67 4 DOOR IMPALA!!!Just like Sam and Dean Winchester!! 'Cause Mustangs are for p^#$ and you can fit a body in the trunk of a 67 Impala* MEMBER OF THE DRUM BRAKE CLUB Bachelor of Music in Jazz Studies Texas State University-San Marcos, TX Certified Music Educator I hope Mom is up there watching and being my Guardian Angel "I've got a fever.....and the only prescription.....IS MORE COW BELL" -The Legendary: Bruce Dickenson "F#$@ 'em up!!!!!!" -The Legendary: Rogelio Escobar TRUCKY LINKS** http://67-72chevytrucks.com/vboard/s...d.php?t=457750 http://67-72chevytrucks.com/vboard/s...d.php?t=461184 http://67-72chevytrucks.com/vboard/s...d.php?t=472848 http://67-72chevytrucks.com/vboard/s...d.php?t=417541 http://67-72chevytrucks.com/vboard/s...d.php?t=477788

10-21-2003, 11:03 AM	#3
Scrub Collector of rusty Items Join Date: Dec 2001 Location: Sisters,Oregon USA Posts: 731	The fan clutch just doesn't kick on until the temp is near 240. It is ok if I am just cruising, but pulling a load over the pass, it is not OK. I bought a hay swather and hauled it in several loads over the Cascade Range last week and I had to really work at not completely blowing my coolant out the top. Once the fan kicks in, it cools right down and stays there, but you have to keep the load on, or it will cool down too far and the fan turns off and then it heats up again. Pain in the rear! Anyone have experience with Hayden fan clutches? My parts guy has one for $75.00. I have bought the cheapies before and had terrible luck, so I am hesitant. __________________ Scrub Sisters, Oregon - Home of the Sisters Rodeo. 70 GMC 1,000,000 + miles 72 K-20 project, 456 Dana60 front, Corp14 rear w/locker, 265R19.5 tires 20-ply. Warn 12k winches both ends, Cross-over steering with raised tie-rod, Powerbox steering, 4500 watt 120-AC power, Air, Hydraulic aux power, 4 inch lift, 5000 lb air-bags both ends.

10-21-2003, 11:40 AM	#4
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	Two things come things come to mind...have you verified that it actually that hot and you are not getting worried over an incorrect guage? Is your fan shroud in place and undamaged? The fan shroud is very important with a fan clutch because the heated air needs to be pulled over the clutch so it turns on at the correct time __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS



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