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My cooling fan clutch is not releasing and the fan is real loud. I put a new fan clutch in twice and it still wont work. I put a new thermostat in. I tried the fan clutch on another truck and it works fine.
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Fan clutches are stiff and loud till vehicle runs a bit, as fan clutch mechanism warms up drag on clutch mechanism releases pressure and will free wheel.
Do not mistaken this with, when engine hot, clutch engages to help cooling system which is normal.
No that doesn't sound like the problem, the fan clutch locks up to cool the engine off due to the increased load of the AC system on the cooling system, so it locks up and gets much louder. If it didn't lock up the engine would overheat.
1. Could be a caught foreign object between A/C (air conditioning) fan and cooling radiator, producing this loud noise. 2. Could be a damaged fan blade, mowing the cooling radiator. 3. Could be a loud noise comming from the fan's electrical motor. 4. Could be a broken off fin (small wing) of the cooling radiator, striking the A/C fan, producing this loud noise.
It is likely your fan clutch has gone bad and needs to be replaced.
Fan clutches are engineered to improve the vehicle’s cooling system efficiency. The clutch engages the fan at low speeds when additional cooling is needed. At high speeds the clutch disengages the fan, removing the load against the engine and allowing the engine to run more efficiently.
There are two types of fan clutches, non-thermal and thermal. Non-thermal fan clutches engage the fan based on the shaft speed of the water pump. Thermal fan clutches engage the fan based on a bi-metal thermostatic coil, which senses the under hood temperature.
most fans are clutch fans and they work or are engaged by temp.most all will spin under really cold conditions.this is normal.but to be sure, with the motor off and key in your pocket grab the fan and see if it wiggles or has any slop. if not alls good
A fan clutch is a thermostatic device that exists as an integral component of certain automotive cooling systems. When the engine is cool or even at normal operating temperature, the fan clutch partially disengages the engine's mechanically-driven radiator cooling fan, generally located at the front of the water pump and driven by a belt and pulley connected to the engine's crankshaft. This saves power, since the engine does not have to fully drive the fan
There are pressure sensors in the refrigerant plumbing that can prevent the system from starting if system pressure is low. If any of these are loose or unplugged the compressor will never engage. The compressor clutch also has a connector that can be unplugged also.
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