Starting & Charging Systems
Car won't start in the morning, or it cranks slow, or the battery light comes on while you're driving. It's almost always one of three things: the battery, the starter, or the alternator. They cause similar symptoms, which is why guessing gets people in trouble. Someone puts in a new battery, the problem comes back in a week, and now they've spent money on the wrong part. Testing tells us which one it actually is, and it doesn't take long.
A dead battery from cold weather or a light left on is the simplest case. A battery that's just old, three to five years in usually, will start acting up gradually: slower cranks, dash lights dimming, that kind of thing. We test the battery under load, not just with a cheap voltmeter, because a battery can show a decent voltage sitting there and still fail to deliver current when it needs to.
A bad starter usually shows up as a click or a dull thud when you turn the key, with no crank at all, or a crank that sounds labored and grinding. Sometimes it's intermittent, works fine for a week, then won't turn over once, then works again. That pattern is worth mentioning to us when you call, since it points at the starter or a bad connection more than the battery.
A failing alternator usually doesn't kill your car in the driveway. It kills it twenty minutes down the road, because the battery was still holding a charge from the day before, and the alternator wasn't putting anything back in. Dimming headlights, a battery light on the dash, or a battery that keeps going dead even after you replace it, all point to the alternator or the charging system's wiring.
The test is a charging system check on the car, plus a load test on the battery. That tells us the actual output and whether the battery can hold and deliver a charge, instead of us swapping parts and hoping. If it's the battery, that's a straightforward swap. A starter or alternator job takes longer, since there's more involved in getting to it depending on the vehicle, and we'll tell you upfront roughly how long we expect it to take.
On an older car with other issues piling up, we'll say so plainly if a charging system repair isn't worth doing against the value of the car. That's your call to make, but we'd rather you make it with real numbers instead of a guess.
Call ahead if you can, especially if the car won't start at all — we're at 28801 Meridian E in Graham, open Saturdays, which helps when this kind of thing picks the worst possible morning to happen.