Diagnostic services…

You may have seen on our web site that we offer diagnostic services.

Ever wonder what that involves… If so, read on.

Some vehicle faults need to be traced by connecting a dedicated “diagnostic computer” to you cars Engine Management Unit, or EMU for short.

What is an EMU?

The Engine Management Unit is often described as the nerve centre of the engine. It is essentially made up of several systems i.e.  computer, switching and power management systems, and these are all housed in a very small box.  This box has a socket that allows our computer to “talk” to the vehicle.


How does the Engine Management Unit (EMU) work?

The computer takes readings from the vehicles various sensors which are located throughout the engine. It analyses information such as temperature, the accelerator pedal position, oxygen content in the burnt exhaust gases as well as other measurements. Using the data from the sensors, the EMU can then add the right quantity of fuel at just the right time to provide a good mix of economy, performance and emission control when on the road.  With some vehicles it is actually possible to change the performance of the engine characteristics from the in car display.  Usually choosing from a range of options from economy to sport.


How do I know if something is wrong with the EMU?

Some of the most common signs of a malfunctioning EM can include a permanently lit engine management light on the dashboard, irregular fuel consumption, misfiring engine or not being able to start the car. With most of today’s vehicles, a mechanic can often run some diagnostic tests to identify any fault codes originating from the Engine Management Unit’s memory.  The results may not give the exact source of the fault but can certainly point the mechanic in the right direction.

If you think your vehicle may be developing a fault then it’s essential to get it to us as soon as possible as a simple fix is sometimes all that is required.

If you think your vehicle may be developing a fault then please call us as soon as possible on 01543 376 438.

Ideally situated for engine diagnostics in Lichfield, Brownhills, Sutton Coldfield, Little Aston, Cannock or surrounding areas.