Diyvehiclerepair
- When should idler pulleys be replaced?
- Do I need to replace idler pulley?
- What does it sound like when an idler pulley goes bad?
- Can a bad idler pulley cause alternator problems?
- Is a tensioner pulley the same as an idler pulley?
- How long do tensioner pulleys last?
- Can a bad idler pulley cause vibration?
- Can a bad idler pulley cause misfire?
- Does a bad idler pulley affect performance?
- Why is it called idler pulley?
- Is the idler pulley on the belt tensioner?
- What are the symptoms of a bad belt tensioner?
- How much does it cost to replace idler pulley?
When should idler pulleys be replaced?
An idler pulley is expected to wear over time, and eventually the pulley will fail. Replacement intervals for idler pulleys vary, but are usually within the 50,000 to 100,000 mile range. Replacement often coincides with expected serpentine/accessory belt replacement periods.
Do I need to replace idler pulley?
Generally, idler pulleys will eventually require a replacement. All engine pulleys are extremely important to the function of your engine and replacing them is no small task. If you have any of these issues, bring your vehicle to an ASE certified auto shop such as Ferber's Tire and Auto for an inspection.
What does it sound like when an idler pulley goes bad?
Squealing. When the engine is idling, a bad pulley may make a squealing sound. This is due to the bearings in the pulley going bad. The bearings may also make various other sounds such as clattering or even a rumbling sound, making the vehicle sound as if there was much more wrong than a bad pulley.
Can a bad idler pulley cause alternator problems?
Alternators are DRIVEN by the serpentine belt. All that happens when the belt disappears or pulleys seize is the alternator stops turning; there is NO possibility of damage to the alternator.
Is a tensioner pulley the same as an idler pulley?
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, if bearings fail, tensioner and idler pulleys both require replacement.
How long do tensioner pulleys 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.
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.
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.
Does a bad idler pulley affect performance?
A broken or seized pulley can quickly lead to a torn belt, or in less serious cases, the belt falling off of the engine. An engine without a belt can quickly run into issues such as overheating and stalling, as it's the drive belt that allows the engine accessories to function.
Why is it called idler pulley?
The idler pulley is aptly named because it does just that: idles. Unlike drive pulleys, which are driven by a motor and a shaft, the idler pulley doesn't turn on its own power. The crankshaft pulley, alternator pulley, power steering pump pulley, and the air compressor pulleys are all drive pulleys.
Is the idler pulley on the belt tensioner?
No, the idler pulley is a stationary pulley that keeps the belt in the proper position around pulley driven objects (alternator, power steering pump, a/c compressor, ect) the tensioner pulley is spring loaded to keep the required belt tension.
What are the symptoms of a bad belt tensioner?
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.
How much does it cost to replace idler pulley?
The cost to replace the idler pulley of your driver belt will usually be somewhere between $80 and $200. The cost for the new part should only be anywhere from $40 to $90, while the cost of the labor will be anywhere from $40 to $110. These prices do not include added taxes and fees charged by the auto shop.
