Do alternators have lifetime warranties?
Duralast Alternators – Backed by Our Limited Lifetime Warranty.
What are the signs of a faulty alternator?
7 Signs of a Failing Alternator
- Dim or Overly Bright Lights.
- Dead Battery.
- Slow or Malfunctioning Accessories.
- Trouble Starting or Frequent Stalling.
- Growling or Whining Noises.
- Smell of Burning Rubber or Wires.
- Battery Warning Light on Dash.
What causes a brand new alternator to go bad?
There are a few issues that could make the alternator go bad, such as jump-starting the car the wrong way or installing an accessory that overloads it. Leaking fluid in the alternator or a tight belt can also cause damage to the alternator bearings, causing premature wearing.
How many years do alternators last?
around 7-10 years
An alternator should last between 80,000 to 150,000 miles, which usually means around 7-10 years.
What causes an alternator to fail?
A common cause is also physical damage to the wiring. When some recent mechanical work has been done around the alternator vicinity (like belts, other pulleys, water pumps or else) and accidental damage to the wiring can happen. As with all other electric appliances on the car, rust, filth and bad contacts are arch enemies of proper functioning.
Can a loose serpentine belt cause alternator problems?
Nowadays, on most cars the belt tensioner has a spring of its own so as the serpentine belt loosens over time, the tensioner keeps it in place and tightened firmly. Nevertheless, if the tensioner wears out, it can cause alternator problems (loose belt or worse, the belt can totally fall of the alternator pulley).
How to diagnose alternator problems?
HOW TO DIAGNOSE ALTERNATOR PROBLEMS? Once you’ve seen tell-tale signs that you have alternator problems (flickering lights, battery warning light comes on or else), the best way to start trouble-shooting this problem is to check the alternator voltage output. This is done with a multimeter.
Why does my alternator make a high pitched noise?
Unlike the grinding noise, this is a high-pitched sound. Mostly comes from either a stuck alternator pulley or a severely worn out serpentine belt. In both cases, the screeching sound is caused by the excessive friction between the pulley and the serpentine belt.