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Mobile auto electrician testing a car's charging system with a multimeter under the bonnet
SV Autos · Mobile Servicing

Mobile Auto Electrician: Alternators, Starters, Coils and Spark Plugs at Your Door

Warning light on, hard starting, or a car that keeps going flat? We diagnose and fix alternators, starter motors, ignition coils and spark plugs at your home or work across Soham, Ely, Newmarket and Cambridgeshire. Proper electrical testing, not guesswork.

Guide pricefrom £80+ £20 call-out
Get a free quote Call 07703 287022

Car electrics are where a lot of garages start guessing and swapping parts until something works, which gets expensive fast. The common jobs are actually well understood: an alternator that stops charging, a starter motor that won't turn the engine over, or worn ignition coils and spark plugs making the engine misfire. The trick is diagnosing which one it really is before you spend money on parts. That's what we do first.

We test the charging and starting system properly, tell you in plain English what has failed and why, then replace the alternator, starter, coils or plugs at your home or work. All makes and models. Based in Soham, we cover Ely, Newmarket, Cambridge and the villages in between, so you're not trying to limp a car that might not start to a garage across town.

Proper electrical diagnosis first

We test the battery, alternator and starter with the right kit before anyone buys a part, so you fix the actual fault, not the one that got guessed.

Alternators and starter motors

The two big charging and starting jobs, replaced on your driveway with a quality or genuine unit to suit your car.

Ignition coils and spark plugs

Misfires, rough running and a flashing engine light are often coils or plugs. We find the failing one and replace it, plus the set where it makes sense.

The fault explained, then a price

You get told what is wrong and what it will cost before any work starts. No mystery, no swapping parts and hoping.

Why proper diagnosis beats swapping parts

Electrical faults are the ones most often thrown parts at. A bit of testing up front saves you real money:

You fix it once

Testing the charging and starting system tells us whether it's the battery, the alternator or the starter, so you replace the part that has actually failed.

No paying twice

Swap a battery when it was really the alternator and you're soon flat again, then paying for both. Diagnosis stops that.

Caught early, cheaper to fix

A charging fault left alone flattens the battery and can leave you stranded. Sorting it early is a smaller job than a roadside recovery.

The diagnostic comes off the repair

If you go ahead with the work, the diagnostic fee comes off the price of the repair, so you're not paying twice to find and fix the same fault.

Sound like what you need?

Get a free, no-obligation quote today. A £20 call-out, same-day slots most weeks, and a clear price agreed before any work starts.

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Alternator, starter or battery? What the signs mean

These three get muddled all the time, and the fix for each is different. Here's how to tell them apart. Not sure? We'll test it and give you a straight answer.

Battery or charging light on while you drive

The classic sign of a failing alternator. It means the car is running off the battery instead of being charged, so you have limited time before it goes flat.

Dim or flickering headlights, worse at idle

Often a tired alternator not putting out enough power. Lights that brighten when you rev and dim when you idle point the same way.

A jump-start works, then the car dies again soon after

Usually the alternator, not the battery. A healthy alternator would keep the car running once it's going; if it dies, it's not charging.

One click, or rapid clicking, when you turn the key

The lights and dash still work but the engine won't turn over. That points to the starter motor, or its connections, rather than a flat battery.

Nothing at all, no lights, no click, a dead dash

This is far more likely to be a flat or dead battery than the starter. If jumping it brings everything back and it stays running, the battery was the problem.

A whining or growling noise, or a hot electrical smell

Can be a failing alternator bearing or the drive belt. Worth checking quickly before it lets go and leaves you with no charge at all.

How it works

Three simple steps. No garage visit, no wasted day.

  1. 01

    Tell us about your car

    Send your details in the quote form, or call. Tell us the reg, rough mileage and what you need. Takes a minute.

  2. 02

    Get a free quote up front

    We come back with an honest, no-obligation price, agreed in writing before anything is booked.

  3. 03

    We come to you and do it

    Fully-equipped, at your home or work. You carry on with your day; we tidy up and update your record.

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Mobile Auto Electrician

from £80plus a £20 call-out

Free, no-obligation quote. The price is agreed with you before any work starts, with no hidden fees.

Get your price

What affects the price

Whatever your car, the price is agreed with you up front and in writing: a £20 call-out, then a clear quote for the work. No hidden fees, no surprise on the bill.

  • Which part it is, an alternator, a starter, coils or spark plugs
  • Make and model, the part cost varies a lot by car
  • One coil, or the full set of plugs and coils
  • How much stripping is needed to reach the part on your engine
  • The diagnostic fee, which comes off the price if you go ahead with the repair

The same job, without losing your day

Same tools, same quality parts, same standard, done at your home or work instead of a workshop. It is James who turns up, every time, so you are not explaining the car to someone new. Where a job genuinely needs a ramp he'll tell you straight, but most of what a garage does, we do on your driveway.

Why mobile works

£20

flat call-out

Free

written quote

All

makes & models

On the road daily

Mobile Auto Electrician across Cambridgeshire

Based in Soham and mobile across the region, Ely, Newmarket, Cambridge and the villages in between.

See areas we cover
Soham Ely Newmarket Cambridge Burwell Fordham Littleport Mildenhall Stretham Witchford Haddenham Cottenham

Mobile Auto Electrician, your questions

The clearest one is the battery or charging light coming on while you're driving. Alongside that you might get dim or flickering headlights that get worse at idle, a car that goes flat overnight, a whining or growling noise from the engine, or a car that dies shortly after a jump-start because nothing is recharging the battery. Any of those is worth a proper test, because a failing alternator will eventually leave you stranded. We come to you and check it.

For a short distance, maybe, but not for long and not safely. Once the alternator stops charging, the car runs off the battery alone, and everything electrical drains it: lights, ignition, fuel pump, the lot. When the battery is flat the engine stops, often with no warning and possibly in traffic. It's not worth the risk of being stranded somewhere awkward. Better to call us out to where the car is now.

Listen to what happens when you turn the key. If you get nothing at all, no dash lights, no click, a completely dead car, that's usually a flat or dead battery. If the lights and dash come on normally but you get a single click or rapid clicking and the engine won't turn over, that points to the starter motor. And if a jump-start fires it up but it dies again soon after, the fault is more likely the alternator not charging. We test all three properly so you replace the right part, not a guess.

Despite the name, the battery light is really a charging-system warning, and when it comes on while you are driving it usually points to the alternator, not the battery itself. It means the car is no longer charging the battery. It can occasionally be the drive belt or wiring, which is why a proper test matters. We check the whole charging circuit and tell you exactly what has failed before you spend anything on parts.

Some of the larger branches do fit alternators, though availability and pricing vary by location and you'll need to book the car in and leave it with them. We do the same job at your home or work, so there's no dropping the car off, and we diagnose the fault first rather than fitting a part on the assumption. Send us your reg and we'll give you a price for your car.

It depends entirely on the part and your car. An alternator, a starter motor, a set of spark plugs or an ignition coil are very different jobs, and part prices swing a lot by make and model. We charge a flat £20 call-out, then a diagnostic fee to find the fault, which comes off the price if you go ahead with the repair. You get the full price agreed before any work starts. Send us your reg for a quote.

We diagnose first, always. Electrical faults are the ones most often thrown parts at, which is how people end up paying for a battery, then an alternator, then a starter to fix one problem. We test the charging and starting system with proper kit, work out which part has actually failed, and only then replace it. It's the honest way to do it, and it saves you money.

It varies by car and plug type, but most petrol engines are somewhere in the 30,000 to 60,000 mile range, and some long-life plugs go further. Your handbook has the exact interval. Signs they're due include misfiring, rough idling, harder starting and worse fuel economy. If you're getting any of those, send us your reg and we'll check what your engine takes and what's due.

A misfire is the big one: the engine stumbles, feels rough or lumpy, and you can lose power. You might get a flashing engine management light, harder starting, or worse fuel economy. On many cars one coil fails at a time, so we test to find the failing one rather than replacing the whole set unless it makes sense to. We can plug in, confirm it and fit the part at your home or work.

We're based in Soham and come to you across Ely, Newmarket, Cambridge, Burwell, Fordham, Littleport, Mildenhall, Stretham, Witchford, Haddenham, Cottenham and the surrounding villages. Because a car with an electrical fault often won't start or shouldn't be driven, coming to where it is now is exactly the point.

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