The old idler pulley bolt doesn’t fit the new one, what can I do?

What size is idler pulley bolt?

Fitting Size: 7/16-20.

Can you drive without an idler 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.

How do you remove a bolt from an idler pulley?

Put a socket on the bolt and turn the bolt counterclockwise to break it loose. If it will not break loose because the tensioner wants to move, keep the tensioner from moving by holding it in place with a pry bar; then you will be able to loosen the bolt in the 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.

What is a tensioner pulley?

Tensioner pulleys provide precise guidance and constant belt tension in the belt drive. They can either be mounted rigidly or combined with the tensioning elements to belt tensioners. Tensioner pulleys increase the wrap angle on belt drives and thereby transmit higher performance.

What does the idler pulley do?

The idler pulley is a common part that’s found on the majority of the vehicles on the road. Its primary function is to provide tension and guide the engine drive belt. These belts wrap around the various parts of the engine such as the power steering pump, alternator, water pump etc…

Can a bad idler pulley cause alternator problems?

All that happens when the belt disappears or pulleys seize is the alternator stops turning; there is NO possibility of damage to the alternator.

What are the symptoms of a failing idler pulley?

Signs and Symptoms of a Bad 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.

Can a bad idler pulley cause vibration?

Grinding noises – Grinding and rumbling noises are another common sign of tensioner or idler pulley failure, usually due to failing bearings. Excessive tensioner movement – Worn-out coil springs can also cause drive belt tensioners to loosen their grip on the drive belt, resulting in excessive vibration and rattling.

How do you adjust the idler pulley?
So you go ahead and loosen that off using a wrench. And then that will allow you to make your adjustment. Here now a lot of times you're not going to have to go all the way in.

How do I know if I need a new tensioner pulley?

One of 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 tensioner pulley supposed to move?

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 tight should a tensioner pulley be?
So you want it to go from flat to just straight up and down if you can turn it too much that means it's too loose if you can't turn it all the way straight up it means it's too tight.

Why is my tensioner shaking?

Why Is My Belt Tensioner Shaking? Wobbling of Belt Tensioners When belt tensioners fail, they tend to get noisy. It is often an indication that the belt tensioner is worn out and needs to be replaced if it chirps or makes other noises.

Can a bad tensioner cause loss of power?

If the tensioner’s wear leads to the belt fully dislodging, likely through seizing, each of the components that rely on the belt for power will be lost. This means your vehicle’s air conditioning, alternator, smog equipment, water pump, and power steering will be lost if the belt dislodges.

Can a bad tensioner cause rough idle?

A bad belt tensioner can cause your vehicle to stall, since it is intended to ensure ample tension for accessories to run. As a result of belt tensioner wear, the belt will eventually slip, generate loud noise, and create an unsafe level of heat in the accessory pulleys.

Can a bad idler pulley cause misfire?

As far as I know, nothing that has anything to do with the idler pulley could cause the engine to misfire. It’s just too much coincidence that something else would go bad immediately after this repair.