What is a car alternator?
A car alternator keeps your car's battery charged, which is obviously important because a charged battery starts your car and powers everything electrical within it. It does so using a drive belt (sometimes referred to as a serpentine belt) to convert the mechanical energy of the car's rotating crankshaft into electricity through a process of induction.
What are the possible signs of a faulty alternator?
- Your car is difficult or slow to start.
- Growling, whirring, whining or squealing noises are emanating from your car's engine.
- Your car’s interior and exterior lights seem too dim, blink erratically, gradually fade, suddenly get brighter or don’t come on at all.
- The red light on your car’s dash with the image of a battery (or the words ALT or GEN) becomes illuminated.
- Your speedometer has stopped working.
- You can smell rubber burning.
- Your car fails a multimeter test at a garage.
What is the cause of a faulty car alternator?
- The component, a brush, which maintains constant electrical contact with the spinning alternator, becomes worn.
- The voltage regulator, which makes sure that the electrical charge is passed to the battery at the correct voltage, fails.
How long does a car alternator last?
- On average, a car alternator can last for 8-12 years without needing for any repairs.
How much does it cost to repair a faulty alternator?
- On average, it costs between £150-£300 to repair or replace a broken car alternator depending on the vehicle.
- Refurbished car alternators are available but do not offer that much of a cost saving.
How and where can I get a car alternator repaired?
- BookMyGarage is partners with over 9,000 garages in the UK so we can almost certainly find one to repair or replace your car.
- Go to bookmygarage.com, enter your car registration and postcode, and then press the search button.
- Sort the results by etc.
- Call one of our expert mechanics on 03304 004439 for help and advice if needed.
About Alfa Romeo
The makers of the Italian Alfa Romeo began getting involved in car racing in 1911, but things didn’t start ramping up for them until they switched to mass-producing small vehicles rather than hand-building luxury models after the end of the second World War. Over the years they’ve competed successfully in many different varieties of motorsport, from Grand Prix motor racing to Formula One, sportscar racing, rallies, and touring car racing, but they're still known for their beautiful cars above all else.
When it comes down to it, modern Alfa Romeos are as reliable as just as cars from any other major manufacturers, but are frequently flashier looking! The MiTo and Giulietta add a bit of Italian charm to the supermini and family hatchback models respectively due to their smart styling and unique interiors. And on top of that, both are available as sporty ‘QV’ models in true Alfa Romeo tradition. Of course, you’ve got the lightweight Alfa Romeo 4C if you’re looking for a Italian sportscar to play around with.
How can you save money (and the environment) while you drive?
As every garage owner will tell you, there are some tried and tested ways to cut down on your petrol costs
(and consumption) while you’re out and about in Watford or beyond. One is to shut your windows. If you can hear that wind
noise in your car it’s costing you more to drive. This is because the car becomes less aerodynamic and has to work harder to
motor along. Removing a roof rack will improve your fuel efficiency for the same reason. Another useful tip is to combine short
trips into one; each time you drive after your car has been parked for a while the engine will be cold and need to use a
lot more fuel for the first 5 miles or so. If you do one trip from school drop-off to supermarket to office you’ll use far
less fuel than if you do all those trips individually.