Alternator Repair in Derry

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Is your battery not charging? Do your headlights dim when you press the accelerator? If so, you probably have an Alternator Fault.

A new alternator may be necessary to power your engine sufficiently and ensure safety.

Along with alternator repair, battery problems may also be an indication of starter motor failure.


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Top garages for Alternator Repair in Derry (10 found)
Donnelly & Taggart
Member since 29 June 2015
Eglinton

offers professional, competitively priced ownership services, along with exceptional customer service. Our expertly trained staff are on hand to ensure you and your Toyo

Browne & Day
Member since 13 January 2016
Claudy, Londonderry

The team to go to for service you can trust, at a price you can count on. Here at Browne and Day we aim to provide you with an unrivalled experience when servicing yo

Desmond Motors Limited
Member since 25 May 2015
Londonderry

The team to go to for service you can trust, at a price you can count on. Here at Desmond Motors Limited we aim to provide you with an unrivalled experience when serv

FRU-mods
Member since 21 December 2017
Derry City

Mobile auto-electrical, servicing and diagnostics. Specialist in emergency vehicle installations, maintenance and repair of blue light systems, navigation systems and com

John Mulholland - Derry
Member since 13 May 2016
EGLINTON

We are a multi franchise site joint Hyundai and Skoda main dealer situated approx 5miles from city centre and have been in business on this site since March 2011. We off

Elmwood Exhausts
Member since 26 April 2017
Londonderry

Garage Services

Todds of Campsie
Member since 17 November 2015
Londonderry

As an authorised Kia dealer, Todds of Campsie is a family owned and run business which will offer you the warmest welcome and that "personal" service which we pride ourse

BC Auto Repairs
Member since 10 September 2013
Derry

At BC Auto Repairs we repair and service all makes and models of cars we also have the latest diagnostic equipment covering all makes.

Northland Motors
Member since 15 November 2018
Londonderry

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CARCLINIC
Member since 18 October 2012
eglinton

CARCLINIC -BAVARIAN CARS REPAIR SPECIALIST-DIAGNOSTIC-SERVICE-ELECTRONIC & ELECTRIC TROUBLESHOOTING CERTIFICATE OF B.R.E COMPETITION DAIMLER&CHRYSLER-MANUAL&AUTOMATIC GE

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Alternator Repair in Derry
Frequently asked questions
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What is a car alternator?

The car's alternator performs a simple but vital job: to keep your car's battery charged. The battery is responsible for starting the car, spark plugs, lights, electrics, and sometimes power steering - quite a job - so it's essential that it's topped up - and that's what the alternator does.

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What are common problems with an alternator?

The alternator acts like a small generator: the engine spins, and the alternator turns that spinning motion into electricity. The most common problems are worn brushes (the component that maintains constant electrical contact with the spinning alternator) and a failing voltage regulator (which ensures that the charge is sent to the battery at the correct voltage.)

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What are the common symptoms of alternator problems?

Common signs of car alternator problems include the 'charge' or battery lights flashing on the dashboard, flickering or dimming headlights and interior lights and a growling or whining noise under the bonnet.

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What is the average alternator repair cost?

An alternator can be rebuilt as opposed to replaced, however in truth the difference in cost is often quite small. Either way the most common repair cost is around £150-200.

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How to test an alternator for problems

A simple way to test an alternator for problems is to do what's known as the headlight test. Park your car with the headlights on or run it in neutral, then rev the engine. If the headlights dim you could well have an alternator problem. A better test is to take your car to a garage, where a car alternator can be tested using a multimeter tool.

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What happens if my alternator breaks?

If your alternator fails, your car battery won't charge and, very soon, will have insufficient charge to start the car.

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Gary from Complete Mechanics explains the workings of the alternator