The Best in Auto Repair The average cost for drive belt tensioner replacement is between $241 and $281. Labor costs are estimated between $83 and $104 while parts are priced between $158 and $177. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
How do you know when belt tensioner is bad?
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.
How long does it take to replace a belt tensioner?
Automatic belt tensioners, standard in most cars now, make changing a serpentine belt a simple DIY repair. Follow the clear photos and step-by-step instructions and you’ll be done in 15 minutes.
How do you change a belt tensioner assembly?
Can I 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.
What sound does a bad belt tensioner make?
A bad timing belt tensioner noise is a noticeable symptom that starts like a whining sound within the car’s engine. You would hear a knocking sound if the timing belt goes loose due to a bad tensioner since the connected parts would start hitting the belt cover.
How long does it take to replace a tensioner pulley?
If you are doing the job at home, give yourself about four hours to change all the parts. You will need the following tools and parts: Replacement idler pulley. Tensioner pulley.
What happens if you don’t replace belt tensioner?
Over time, the belt tensioner will lose its capacity to apply tension to the serpentine belt. Sometimes, the mechanism will weaken or seize up from repetitive use. Other times, the pulley itself can warp, crack, or throw a bearing. This often results in a noticeable squeaking noise from the front of the engine.
How long do car tensioners 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.
Should I replace belt tensioner or just pulley?
If the pulley is damaged, replace the tensioner assembly not just the pulley. If an idler pulley is damaged, inspect the tensioner also because vibrations caused by a bad idler pulley may damage the tensioner.
Why do belt tensioners fail?
The most common causes of timing belt tensioner failure include: Wear and tear: On a new mechanical timing belt tensioner system, the timing belt tensioner spring is wound tightly by two tension rods. Over time, the spring stretches out and loses its tension. As a result, the entire tensioner becomes too weak.
How do you test a belt tensioner?
How do you remove a tensioner assembly?
Use the extension/breaker bar on the grooved pulley tensioner arm, rotate the tensioner counter clockwise to remove the pin/bolt. Slowly allow the tensioner to rotate in a clockwise direction until the tensioner reaches the low stop. Remove the three bolts that attach the tensioner to the engine.
Can you tighten a tensioner pulley?
Is the idler pulley and tensioner pulley the same?
The primary distinction between tensioners and idler pulleys is the presence of an adjustable bolt. Tensioners are positioned on the bolt through mounting. Idler pulleys are not mounted to an adjustable bolt. However, the differences between idler pulleys and tensioners also extend to purpose.
Can a bad belt tensioner cause rough idle?
Poor Driving Experience So if you have searched for answers to the question, can a bad serpentine belt cause rough idle? The answer is yes.
What happens if my tensioner pulley goes bad?
Symptoms of a bad tensioner pulley include difficulty starting the car, loud grinding or screeching noises, a loose engine belt, and a lack of power when trying to speed up the vehicle.
How long can I drive with a bad tensioner pulley?
So, how long can you drive with a bad idler pulley? The safety recommendation is not to drive the car at all and take it to a mechanic immediately. You should be concerned if the vehicle makes squeaking or rattling noises. The car can still run for months or break after a few days.
What problems can a bad tensioner cause?
If the timing belt is loose because of a bad tensioner, then the timing of the valves will be off. This means problems in the engine, which will then result in the check engine light illuminating on the dashboard.
What are the symptoms of a failing idler pulley?
- Chattering, Squealing, or Chirping Sound.
- Corroded Surface.
- Excessively Loose Idler Pulley.
- A Bad Idler Pulley May Spin Excessively.
- Slow to No Spin or Binding.
What is cost to replace tensioner pulley?
To replace the drive belt tensioner on most models, you can expect the parts and labour charges to tally up between $200-$400 for most cars. Some engine designs use more than one tensioner for the drive belt, and some cars even have more than one drive belt with a tensioner.
Can a bad tensioner cause loss of power?
Typically a damaged belt tensioner will not impact vehicle performance. It would cause the serpentine or drive belt to wear prematurely or to squeak – but not cause the acceleration issue.
Can a belt tensioner make noise?
Tensioner noise A squeaking or rattling noise coming from the tensioner indicates wear on the tensioner’s internal components and impending tensioner failure.
Should you replace belt tensioner with serpentine belt?
Chances are, you’ll replace the serpentine belt at least once before you have to replace a tensioner. In most cases, you’ll replace the belt several times before the tensioner. But every time you replace the belt, you should check the tensioner. A bad tensioner could ruin a brand new belt.
What does a loose belt sound like?
A loose drive belt will often be noisy, squeaking a bit, or emitting a high-pitched squeal. The most obvious sign of a loose drive belt, though, is in its appearance and tension.