Older cars on the St Helier estate and charging faults
The cottage streets of the St Helier estate are narrow, with cars parked on both sides, and many of those cars are older, well-used models that have done a lot of miles. On cars of that age, alternators fail in fairly predictable ways. The brushes wear down until output drops in and out, the regulator starts to allow the voltage to wander, or the bearings get noisy. Often the first sign is a battery that has to be jump-started in a tight street where getting another car alongside is awkward.
Rosehill also has a lot of shift workers heading to St Helier Hospital on Wrythe Lane, and night driving means headlights, heater and wipers on for the whole trip. If the alternator is weak, a car used mainly after dark will run down faster than one used in daylight. Queuing at the Rose Hill roundabout, or edging past the parades at Rosehill Court, keeps the engine near idle, where output is lowest. A car that copes in summer can start failing once the clocks go back and every journey needs full lights.
We test the alternator's output with realistic loads on, rather than just at idle with nothing running, and we check the battery and the connections between them. Older cars often have corroded earth straps or a tired main cable, and fixing those can cost far less than a new alternator. If the alternator is the problem, we'll give you a written quote for a new or quality remanufactured OE-specification unit, and we fit a new drive belt with it, checking the tensioner and idler pulleys while it's off.
From the Rose Hill roundabout, take Wrythe Lane past St Helier Hospital to Wrythe Green, then Nightingale Road and Hackbridge Road to London Road, about 2.5 miles. If the car won't start, we can collect it from Rosehill, and the repair carries our 3-month workmanship warranty.