Bosch congratulates Top Technician winner and runner up

Left: Matthew Pestridge. Right: Shaun Miller

Published:  07 August, 2018

Bosch congratulates Top Technician winner and runner up Bosch has congratulated Top Technician 2018  winner Shaun Miller and runner up Matthew Pestridge on their achievements in the 2018 competition.

Aftermarket’s Top Technician competition is open to independent, fast fit and franchised dealer technicians and is designed to test knowledge and skills.

2018’s winner was Bosch trained technician Shaun Miller from Millers Garage in Newbury, which has been a Bosch Car Service (BCS) garage since 2011. Shaun won the competition by showing his top diagnostic skills in a range of tough fault finding tasks. The win comes following his top performance in the 2017 competition, where he was named as runner-up.

Shaun Miller, Workshop Manager at Millers Garage said: “I am so delighted to be Top Technician 2018. Half a lifetime has gone into this achievement, since I first started in the industry. I have spent my career trying to learn more and so have invested my time in training courses with Bosch, which I know  aided in my diagnostic skills. I wanted to win Top Technician since I first heard about it seven years ago, and now I have. It’s amazing to have this trophy.”

Ian Daly, Workshop Channel Marketer for Bosch Car Service, UK said: “Bosch Car Service garages benefit from access to Bosch training, and we encourage technicians to upskill and continue to stay ahead of the game. Congratulations go to Shaun for doing such a great job in a very difficult competition, we are delighted to have him and Millers Garage as part of the Bosch Car Service network.”

This was not the only success for a BCS garage, as Bosch trained Matthew Pestridge, from D&D Autos in Ashford, Kent, was named runner-up for the 2018 competition.

Matthew Pestridge commented: “I am so pleased to have got as far as I did with the Top Technician competition. I pride myself in my diagnostic skills, which was boosted through the training I received through Bosch. It was these skills that I thought got me as far as I did. While it would have been great to win, I am so proud to have got the runner-up position, especially as it was against tough competition this year.”

Bosch has a dedicated training facilities, Bosch Service Training Centre, in Uxbridge near London, where thousands of automotive technicians attend comprehensive training.

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  • Under no pressure 

    Once the news started to spread about my Top Technician win, the phone started to ring with more interesting and challenging jobs, usually ones that have been doing the rounds between other garages without success.
      
     A phone call came from a local parts supplier, a visiting rep was having issues with a DPF. They believed it needed a simple regeneration to get it back on the road and asked if I would be able to do the job. After checking the Blue Print G-Scan, the function for a forced regeneration was available, I believed I would be able to carry it out and booked the job in.

    Basic beginnings
    After traveling from two hours away, the vehicle arrived. The customer was questioned, ‘Why do you require a DPF regen?’ Being a parts rep within the motor trade, her garage visits were frequent; various attempts had been made to resolve the issue. With conflicting advice being given and quotes between £600 - £1200 to fix the vehicle, the customer was obviously confused and unsure about what to do.
        
    The engine management light was on, so the obvious place to start was a scan check for fault codes. The vehicle showed P2002: Particulate Trap Below Threshold.
        
    Viewing the live data for the DPF pressure sensor, key on engine off, displayed a 0kpa pressure reading, a good start for a sensor plausibility check. With the engine running and RPM increased, the sensor reported a suspiciously low-pressure reading, not one I would associate with a saturated DPF. I decided to use the Pico Scope to look at the DPF pressure sensor voltage in real time. After confirming the power and ground circuits to be ok at the three wire pressure sensor, the signal wire was checked. Again key on engine off, 750mv was displayed, a sensor plausibility check and again this was good. Starting the vehicle and increasing the revs revealed exactly the opposite to what I had expected, a negative voltage reading. The voltage should increase as the exhaust pressure increases.

    What’s wrong?
    One area I wanted to check was that the pipes were not connected the wrong way around. I decided to use the Mity Vac to apply pressure to the sensor pipe connected in front of the filter. This showed a positive rise in voltage, further proving good sensor functionality and confirming the pipes to be correctly connected. Connecting the Mity Vac to the pipe after the filter and applying pressure, simulated the negative voltage which was seen when the vehicle RPM was increased, simulating the fault. The sensor pipe in front of the filter must be blocked.
        
    I located the steel pipe that is fitted in the exhaust in front of the filter to reveal soot marks, it had been leaking exhaust gasses. On a closer look it was unscrewed from the exhaust while still located in the hole due to the pipe bracket allowing the slight leak of exhaust gasses. Once the pipe was removed it was clear to see the soot had built up and blocked the small hole in the end of the pipe. I unblocked the pipe, checked to make sure the mounting hole on the exhaust was clear and refitted it.
        
    Using the Pico Scope again on the signal wire, it now showed a positive rise in voltage when the RPM was increased. The live data now showed a small pressure increase, the filter was not blocked. With all fault codes cleared, an extended road test was carried out, the pressure reading stayed low throughout and no fault codes reoccurred confirming the fix, the vehicle did not require DPF regeneration.

    With no parts required to fix the vehicle the repair cost was far lower than the customer expected due to the previous attempts. The vehicle was returned to the customer who was surprised by the
    outcome of the repair and relieved by the associated costs.



    TT Archives:  Top Technician issue nine 2016 | www.toptechnician.co.uk

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