A place used to engines
Castle Donington is used to machinery. Donington Park, the motor racing circuit to the south-west of the village, hosted the European Grand Prix in 1993, and a motorcycle maker has had its head office at Donington Hall since 2013. Diagnosing a commercial vehicle takes the same discipline as any serious engine work: measure first, change parts second. A modern truck, coach or van is full of sensors and control units, and a single warning light can have several causes. Replacing parts until the light goes out is expensive and often doesn't work; testing until the cause is confirmed does.
Faults that show on one duty only
A vehicle working around Castle Donington might spend part of its day moving between the airport, East Midlands Gateway and the distribution centre, and the rest on the M1 or the A50. Faults often choose one of those. A warning that appears only after a long motorway run, a derate that happens when the trailer is full but never when it is empty, a no-start that only happens after the vehicle has stood at a gatehouse with the engine off: each points somewhere different. Tell us the duty, the load, the weather and how often it happens, and send a photo of the dashboard if you can. That information shortens the diagnosis.
Emissions faults
Emissions systems cause a good part of the reduced-power stoppages on modern vehicles, and the fix is rarely the obvious one. A warning from the exhaust fluid system might trace back to a sensor, the dosing system or the wiring, and only testing tells you which. That is the difference between a vehicle that stays fixed and one that is back in limp mode next week.
Where we diagnose
Our technicians carry diagnostic equipment, so a fault can often be found and fixed at the roadside, in a yard on the Gateway or at a unit on Pegasus Business Park. When a job needs more time or the vehicle on lifts, it comes to our workshop at Calke Mill Farm, Ashby Road, Melbourne, open for planned work Monday to Friday, 07:30 to 17:00. You get a plain explanation either way, including whether a repair is permanent or only enough to get the vehicle home.
If a vehicle drops into limp mode on the M1 or the A50, get it somewhere safe and ring 01332 916028, whatever the time. Driving on can make a modest fault much worse.
