Yes still using the fan. How to check whether it is engaging properly? As far as I know, it engage whenever I start engine and disengage immediately after I switch off my engine.
It would like what you say but clutch fan will 100% engage when air temp from rad is hot 70-80deg. On start up it will engage after a while it will reduce the fan speed and there is deviation between pulley speed and your fan clutch speed at abt 80%.
How to check? I`m not a pro but this is just a method to look out:
Outlook:
1. Oil drip/fluid from clutch itself.
2. Push the tip upward backward to see any loosen (Bearing damage)
Diagnosis:
1. With engine stop try rotate the fan, it will give some resistance at 1.5-2 rotation
(medium resist) but not much free.
If don`t move at all, clutch freezing (bad cond- would not reduce during high speed or cold)
If don`t give resistance or lot free, clutch wear out and hard to engage when hot - Bad cond.
2. During engine on/start/idle,you will hear some noise from clutch fan meaning it`s engaging and
pay attention to your water temp to keep maintain. If water temp increasing and there is no
noise,from it meaning it doesn`t engage or you may look how it`s spin compare to pulley speed
if slower then this indicate a wear out clutch viscous coupling.
* You may compare with other Skyline member during gathering to diagnosis how free your clutch
fan compare other good cond skys.....might can tell difference feel there.
All above must be done after you check your radiator,reservoir tank or hose condition and confirm no leaking~
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