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Automotive & Mechanical Diagnostics case studies

The Engine Bay are expert automotive diagnostic technicians.

Here we share some of the work we have done and what we found, with our customers vehicles after they have been to other workshops without success.

2010 Ford Transit Motorhome - Ignition Fault

Our customer came into us after having their motor home at two different workshops. One didn't want to do the job and the other had no idea what the problem with the vehicle was. Here was our process for diagnosis and repair:

  • There was an ignition fault with the vehicle, it wouldn't start.
  • The onboard ECU was checked for faults and a code was present indicating the cam and crank correlation was not correct.
  • Further testing found that the crank sensor had been damaged from hitting the crank shaft and the sensor mount bracket was extremely loose.
  • As this was a Motorhome, the vehicle had to be jacked up high enough to be able to work underneath it, as it wouldn't fit on the hoist.
  • The gearbox was removed and from there it was discovered that the crank angle sensor mount bracket was missing and that one of the 2 bolts was not in the bell housing (the bell housing is part of the transmission).
  • We supplied and fitted two new bolts with a new crank angle sensor and mounting bracket.
  • The gearbox was then reassembled to the engine and the fault codes were cleared.
2010 Ford Transit Motorhome - Ignition Fault

The customers were thrilled to finally have their motor home running and requested that we service it and install a GPS unit that was supplied by the customer.

These diagnostics can take days and sometimes weeks in order to prove a fault. Different tests need to be performed on some faults. Without being 100% accurate and sure of the issue, money could be spent on the wrong repairs, not solving the problem.

2010 Nissan Navara D40 - Engine cutting out

Here was our process for diagnosis and repair:

  1. Fault - The engine was cutting out while the customer was driving.
  2. The onboard ECU was checked for fault codes and was clear.
  3. To diagnose, several tests needed to be performed.
  4. The vehicle was driven with a clear hose on the outlet of the fuel filter assembly. On inspection, a large amount of air in the fuel was evident when the engine cut out.
  5. The clear tube was then connected to the inlet of the fuel filter assembly and test driven. No air was found at the inlet while driving it.
  6. From there, the fuel filter and the o ring was replaced at the water sensor and the vehicle was again driven to monitor. Air was still evident on the outlet of the fuel filter assembly .
  7. This lead to a new Fuel filter primer pump being supplied and fitted and driven once again to monitor. No air was in the clear tube and the engine was not cutting out.
  8. The clear tube was replaced with a new fuel hose before returning the vehicle to a happy customer.

2014 Holden Cruze - Intermittent Engine Light On

Here was our process for diagnosis and repair:

  • Fault - the engine light was coming on intermittently.
  • The onboard ecu was checked for fault codes. A fault code was present for the engine running lean. This is an excessive amount of air in the engine and can potentially lead to engine damage if not diagnosed.
  • Further testing found there was an excessive vacuum in the engine crank case. It was suspected that the pcv valve was faulty due to it being jammed open ( pcv- positive crankcase ventilation).
  • The pcv is part of the rocker cover ( rocker cover protects the inner moving parts of the engine and prevents debris from entering) and therefore the rocker cover needed to be replaced.
  • The vehicle was test driven and monitored before returning to the customer.
2014 Holden Cruze - Intermittent Engine Light On

1995 Jeep Cherokee - Brakes locking

At no time is this an issue you should be having with your vehicle. Your ability to stop effectively is crucial.

  1. The Jeep came in for a service and  65 point safety inspection. The customer mentioned that the brakes lock when applied and made a metal on metal sound.
  2. Upon inspection, the fault was found with the left had rear brake adjuster cable had broken and had damaged the brake shoes and the drums.
  3. We supplied and fitted new brakes and drums. Bled and adjusted the brakes.

Now the customer can rest assured that they are driving safely on the roads with real stopping potential.

1995 Jeep Cherokee - Brakes locking

Don't let automotive issues get the better of you! Enjoy the convenience, accuracy, and expertise of our Automotive Diagnostics team today. Make an appointment with us and let us manage your car care requirements. We are certain to have your vehicle running smoothly and efficiently once again.

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