Table of Contents
The belt tensioner is on the front of the engine, between the crankshaft and alternator pulleys.
How do you loosen a belt tensioner?
Turn the bolt head in the center of the spring-loaded arm of the belt tensioner counterclockwise with a ratchet and socket to loosen the bolt. The tensioner will rotate freely before it comes to a stop. When the spring-loaded arm comes to a stop, continue to turn the bolt until the bolt loosens.
What are the signs of a bad belt tensioner?
Rust bleed and cracks. Appearance: Rust is bleeding between arm and base or dripping from the tensioner. Pulley bearing wear. Pulley wear. Tensioner assembly misalignment. Tensioner noise. Tensioner arm misalignment. Excessive tensioner arm oscillation. Binding or grinding tensioner arm movement.
Is it safe to drive with a bad belt tensioner?
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.
How much does it cost to replace a belt tensioner?
To get the belt tensioner replaced, you will pay anywhere from $140 to almost $400. The price of parts and labor varies from one car to the next, with most labor costs coming in at about $70 or $80.
What does a bad 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.
Should I replace tensioner with serpentine belt?
There is no recommended timeframe in which to replace your tensioner, especially as the belt itself usually needs replacing before the tensioner does. However, you should inspect your tensioner each time you service your car to monitor its condition and replace it if necessary.
Can you break a belt tensioner?
Another symptom of a potential problem with the drive belt tensioner is unusual belt wear. A bad pulley can cause fraying on the edges of the belt, and in severe cases can even cause it to break.
Can a belt tensioner making noise?
1. 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.
What causes a belt tensioner to bounce?
Excessive arm movement or bounce due to a worn damper: The damper moderates the action of the tensioner spring in much the same way that a shock absorber dampens a vehicle’s suspension. As the damper wears, the tensioner arm can bounce away from the belt, causing excessive belt slippage.
Is it hard to replace a belt tensioner?
Serpentine belt replacement is easy because today’s automatic drive belt tensioners eliminate the need to loosen bolts or pry components into position for retensioning. Just rotate the tensioner, remove the old belt and install a new one.
What causes tensioner to fail?
A seized tensioner cannot maintain proper belt tension. Dirt or mud can also jam the tensioner housing. A loose or worn pivot arm can allow unwanted movement; that results in belt noise and misalignment. Over time, this will increase belt wear and lead to premature belt failure.
How long does a tensioner last?
Most modern cars that roll off the dealer’s lot as a new vehicle will have a 60,000 to 100,000-mile life expectancy for the serpentine belt, tensioners, and idler pulleys.
What is the lifespan of a serpentine belt?
Serpentine belts are built to last—much longer than before because of advancements in rubber technology. Under ideal conditions, a belt should stick with you for an average of 60,000 to 100,000 miles. Pretty impressive. However, some belts are manually tensioned and may need to be adjusted.
How long does it take to replace a tensioner pulley?
What Is Tensioner Pulley Replacement? Replacing the pulley should only take an hour or two, and the parts will vary in cost from one type of car to the next.
Can a timing belt tensioner leak?
A camshaft tensioner leak will usually have these symptoms: Unusual sounds: You might hear loud ticking and grinding noises. This is often due to a loose timing belt, which arises due to leaking from the tensioner. However, if the camshaft tensioner leaks, the belt will begin fraying.
Can a bad belt tensioner cause overheating?
Many of the engine’s accessories, such as the alternator, water pump, and AC compressor, can be belt driven. A seized or loose drive belt tensioner can cause the belt to snap, which will disables those accessories and can cause problems such as overheating, a dead electrical system and battery, or a disabled AC system.
What does it sound like when Cambelt goes?
Noise. Sometimes, a cambelt will produce a loud noise when the car is running, this happens most often when the vehicle is first started and the engine is cold. The noise could be a squealing, hissing, grinding, rattling, chirping or rumbling kind of sound.
How do I know if I need a new tensioner?
Listen for a fluttering” noise while driving or while the car is idling. This indicates the tensioner is too loose. Other noises such as squealing or whirling from the front of the engine mean the spring inside the tensioner is weakening. In this case, the belt tensioner needs to be replaced.
How long does a belt tensioner last?
How Long Does a Timing Belt Tensioner Last? Unlike the timing belt itself, the tensioner doesn’t necessarily have a manufacturer’s recommended change interval. In almost all cases, the timing belt tensioner should be replaced at the same time as the timing belt which is generally between 75,000 and 100,000 miles.
How do I know if my serpentine belt needs to be replaced?
Symptoms of a Bad or Failing Serpentine/Drive Belt Squealing noise from the front of the vehicle. If you notice a squealing noise coming from the front of your vehicle, it could be from the serpentine belt. Power steering and AC not working. Engine overheating. Cracks and wear on the belt.
