Car Diagnostics in St Marychurch

St Marychurch sits on a hill above Babbacombe, and its steep residential roads mean a car is often asked to pull away on a gradient. A weak battery or worn starter shows itself quickly in those conditions.

Automaster handles diagnostics and auto electrics for petrol and diesel cars from our garage at Longcombe Cross near Totnes. Drivers from St Marychurch, Ellacombe, the wider Torbay area and Newton Abbot bring their cars to us.

Why does my car hesitate to start on a cold morning?

Cold mornings reveal weak batteries first, since a battery delivers less when cold. The next suspects are a worn starter, corroded terminals or a poor earth. Each of those can be checked with simple load and voltage tests.

If the car starts fine after a jump but fails again later, the alternator may not be recharging the battery. We test the whole starting and charging chain together so that you do not end up replacing the wrong part.

What does a diagnostic scan show on a St Marychurch car?

It reads fault codes from the engine, ABS, airbag and other control units, and displays live readings from sensors such as air flow, temperature and wheel speed. The code tells us which circuit or system has complained.

It does not tell us whether the cause is a sensor, its wiring or something else. We follow the scan with testing. Replacing parts on the strength of a code alone is a common mistake.

• Fault codes from each control unit
• Live sensor readings
• Freeze-frame data from when the fault occurred
• Testing to confirm the cause

Which sensor faults are common?

Oxygen sensors, air flow sensors, crank and cam sensors, temperature sensors and wheel speed sensors all fail in service. Symptoms include poor running, hesitation, poor economy, the engine light and sometimes the ABS light.

A sensor fault is not always the sensor. Wiring and connectors fail too. We check the sensor, the wiring to it and the readings it produces before recommending replacement.

Do you take cars from St Marychurch and nearby areas?

Yes. Our garage is at Longcombe Cross near Totnes. Drivers from St Marychurch, Ellacombe, Newton Abbot, Stoke-in-Teignhead and elsewhere in Torbay use us for diagnostics and electrical repairs.

Send us a description when you ask for a quote. Include the make and model, the lights on the dash and how the fault shows itself.

What about immobilisers, alarms and wiring problems?

An immobiliser fault can stop a car from starting even though the battery and starter are fine. A faulty alarm can drain a battery or lock you out. We investigate these properly, which can involve the key, the receiver and the wiring.

Wiring repairs depend on how accessible the damage is. A hidden break in a long loom takes longer to find than a damaged connector you can see, and that affects the quote.