I dont think your car has a fan clutch.
You should have an ELECTRIC FAN that is controlled by a lil' %26quot;mini-computer box%26quot; instead of just a simple Temp Sensor%26amp; Relay set-up.
An Electric Fan will typically blow approximately 35~40MPH type airflow.
To put your hand 6'' or so Behind the fan Should feel similar to sticking your hand out the window while driving 40mph.
The Temperature of the %26quot;breeze%26quot; from the fan Should be Unbearably Hot.
It's a 200*F,, 40mph Wind.
You should NOT be able to stop the fan when Car is at full Temp %26amp; IF fan is at full speed.
Weak Electric Fan Motor---Rare,but it happens.
They are usually either Good or Bad.
Faulty Fan Control ECU---far more likely.
It COULD be failing to switch from Cold Start mode to Hi-Temp/Hi Speed Fan mode???
Loose or Broken Fan Blade--this is NOT unusual on a wide variety of electric fans.
The Mechanical Connection between the actual Fan Blade and the Electric Motor Shaft may be faulty.
The Fan Blade Hub can break,,,or the retainer/tightening nut comes loose,,,or whatever.
Ok,,the Blade WILL Turn,,,and Appears to be Working.
But it SLIPS and cannot pull enough air thru the radiator.
The General Symptoms are SIMILAR to a bad fanclutch,
but the actual fault causing the symptoms is different.How do i know if my fan clutch needs to be changed?With the engine off and at a relatively cool temperature (e.g. when you've not recently been running the engine), attempt to spin the fan by hand. It should spin freely because when the engine's off and cool, the clutch should be disengaged.
You might also run the engine and observe the fan. After the engine idles for a few minutes, your fan should %26quot;kick on%26quot; and start turning. If it doesn't turn on within 5 or 10 minutes (assuming it's relatively warm outside), you probably need a fan clutch. If it does turn on, pay attention to the fan and watch to see whether it %26quot;wobbles.%26quot; Sometimes, even if a fan does occasionally turn, the clutch can wear-- this might affect the efficiency of the fan which could contribute to (but likely not cause all by itself) your overheating.
This could also be a matter of your water pump, but those usually fail in the %26quot;open%26quot; position, so if anything a failed water pump on a relatively modern car will result in an engine that doesn't want to get up to operating temperature. If by some freak occurance your water pump failed in the %26quot;closed%26quot; position, that could cause overheating.
If this car hasn't had regular coolant flushes throughout its lifetime (at least at 100,000 miles and then every 50,000 thereafter), I'll echo what others have said and urge you to get to a radiator shop. Have it checked out, and if your radiator is physically okay, have the shop do a complete service on it.How do i know if my fan clutch needs to be changed?well if its not working while your car is hot and its not working um yes replace it what could you loose and could also be your thermostat not working telling your car that its a different temp then what it really is if that dosent help run it into a tree and get a new one just kiddingHow do i know if my fan clutch needs to be changed?NEVER replace any part 'till you KNOW the problem. Go to a RADIATOR SHOP and get the radiator cleaned.How do i know if my fan clutch needs to be changed?If the fan fails to turn on when it gets hot, it needs to be replaced.How do i know if my fan clutch needs to be changed?if you grab it and spin it with your hand and it spins freely it needs replacing
