How to replace an accessory tensioner in 8 easy steps
Is it hard to change a tensioner pulley?
In most vehicle applications, the pulley can be disconnected from the tensioner and then replaced. But it’s best to inspect the functionality of the tensioner as well, since the unit needs to be removed to replace the pulley. The level of difficulty widely varies per make and model.
What are the signs of a bad belt tensioner?
Grinding or squeaking noise from the belts or tensioner The most common symptom of a bad or failing drive belt tensioner is noise from the belts or tensioner. If the tensioner is loose the belts may squeak or squeal, especially when the engine is first started.
Is the belt tensioner supposed to move?
Appearance: Cycle the tensioner (mounted on the engine) through the entire range of motion (from stop to stop) by applying torque to the arm with a wrench. The tensioner arm should move smoothly and freely. Solution: If you notice a binding, sticking or grinding tensioner arm, the tensioner should be replaced.
What are the signs of a bad idler pulley?
Signs of a Bad Idler Pulley
Is it bad to drive with a bad tensioner pulley?
Driving with a bad belt tensioner is unsafe since the tensioner is meant to guarantee ample tension that powers accessories. Wear on the belt tensioner will eventually cause the belt to slip, generate loud noise, and also create an unsafe level of heat along the accessory pulleys.
What does a bad belt tensioner sound like?
Symptom 1: Squealing, rattling, or chirping. When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise.
How much does it cost to fix a belt tensioner?
The average cost for a drive belt tensioner replacement is between $211 and $239. Labor costs are between $73 and $93, while parts are priced between $138 and $146. Taxes and fees are not included in the estimate.
How much does it cost to fix a tensioner pulley?
You will pay somewhere between $125 and $380 to have your tensioner pulley replaced. The labor should run between $45 and $155, while parts can cost as little as $85 or as much as $225.
What does a loose tensioner pulley sound like?
Excessively Loose Idler Pulley The loose pulley can make chattering noises as it spins and the vibration can knock the serpentine belt off. If the pulley is excessively loose and there is a lot of play after wiggling it back and forth, it needs to be replaced. A normal pulley in good condition will only move slightly.
How much does it cost to replace idler pulley?
The total price to replace the idler pulley typically ranges between $80 and $200, with the parts ranging between $40 and $90, and the total labor cost averaged between $40 and $110.
How do you test a belt tensioner?
Watch the belt and belt tensioner while the engine is running. A bad belt tensioner spring will often cause the tension arm to bounce up and down with the cycling of the motor. This makes the belt wobble as the engine runs. These are definite signs that the tensioner needs replaced.
What causes a belt tensioner to fail?
As the damper wears, the tensioner arm can bounce away from the belt, causing excessive belt slippage. This will in turn induce excessive heat into the belt, which will lead to premature belt failure.
