How do I know if my radiator fan clutch is bad?

How do I know if my radiator fan clutch is bad?

To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.

How do you test a fan clutch on a trailblazer?

Raise the hood, with the engine off and cold. Reach in and spin the fan blade by hand. If it continues to spin freely for more than five turns with no signs of drag, you have a bad fan clutch.

What does it sound like when a fan clutch is bad?

Another common symptom of a faulty fan clutch is excessively loud cooling fans. This may result in an excessively loud engine from the fan blowing at full speed. The sound may be easily audible and present at all times when the engine is cold and hot.

How much is a clutch fan for a 2003 Trailblazer?

2003 Chevrolet Trailblazer Fan Clutch – from $209.99+ |

Is it OK to drive with bad fan clutch?

The fan clutch controls the operation of the cooling fan, and if a fan clutch goes bad, it may not engage properly or at all. As a result, it will disable the fans or prevent them from working at maximum efficiency, which will lead to the engine overheating and more severe issues if left unattended.

Should a fan clutch spin freely when cold?

A fan clutch is a thermostatic motor conditioning fan that may freewheel at low temp when cooling isn’t required, enabling the engine to heat up quicker and reducing engine load.

How does a Chevy clutch fan work?

A thermal clutch fan operates using silicon fluid as a viscous coupling medium. When the clutch is cool and disengaged, most of the silicon fluid is stored in the reservoir allowing your fan clutch to slip relative to your water pump shaft thereby spinning at a lower RPM than the water pump.

How much does it cost to fix a fan clutch?

Radiator Fan Clutch Replacement Cost – RepairPal Estimate. The average cost for radiator fan clutch replacement is between $250 and $372. Labor costs are estimated between $84 and $105 while parts are priced between $167 and $266.

How tight should a fan clutch be?

Snugged up is Good Enough. For “The Jesus Nut” to the Threaded outer portion of the Water Pump… Snugged Tight is Fine.

What causes a fan clutch to fail?

This can be caused by low system air pressure or an air leak in the system, or in the clutch itself. The fan clutch needs a minimum of 90 PSI air pressure to function properly. Repair any leaks as needed. Also, check for worn sheave bearings.