Fan Clutch

[usethegift]

i installed a after market fan clutch a couple of weeks ago. i can hear the thing engaging at 75 mph on the freeway. don't remember the stock one when it was new doing that? probably should have bought an oem.

[masterp2]

What are you driving. More details on the clutch? Why did you replace, brand, etc???

[usethegift]

2004 2500hd 238500 miles.replaced the fan clutch because the old ones bearings were bad.i purchased the new one at auto zone.

[masterp2]

with that kind of mileage, it is time to do a full stack removal and cleaning. I would probably also replace the radiator. For a variety of reasons. There are some airflow papers on my webste, in the download section. Worth reading. But basically, the more airflow you can get, the less fan activity you will have.

 

Also, this is tuning sensitive as well. Excess boost is the main culprit.

[Kodiak450]

2004 2500hd 238500 miles.replaced the fan clutch because the old ones bearings were bad.i purchased the new one at auto zone.

 

 

Hows the engine and rest of the truck holding up with those miles on it? Engine still feel strong?

[usethegift]

great truck engine still runs good probably not the power it once had.just normal maintenance i don't abuse it so that helps.replaced the water pump,alternator,brake pads at 180k.other than normal stuff great truck.

[Kodiak450]

You run conven or syn oil?

[usethegift]

early in its life it was all conventional switched to mobile-1 at about 190k. it started to leak oil shortly there after. but after a number of oil changes it has appeared to have stopped. it still uses no oil at all.this is a gas motor also. i cleaned the "stack" today didn't seem to make any difference i am going to install a oem clutch this afternoon. will let you know if it helps,

[usethegift]

it was the after market clutch.installed the oem clutch and everything is back to normal..