Exhaust & emissions: Easy as 1-2-3

Published:  24 September, 2019

ELTA Automotive is recommending garages follow its three-step process to successfully deal with exhaust and emissions control issues.
    
“In-depth analysis conducted by our TECHASSIST support service indicates that there are two common reasons for returns,” said ELTA Automotive Marketing Manager Tim Brotherton. “The first is misdiagnosis. There are several causes of EGR-related fault codes and not all point directly to the valve itself. The second is technicians replacing EGR valves, but not addressing the underlying issues that caused the valve to fail. Our research shows that EGR valves that have failed prematurely are often heavily contaminated, indicating that they’ve been installed into a ‘dirty’ system.”
    
ELTA’s three-step process proposes that technicians first clean the system using an EGR/turbo cleaning aerosol system. They should then, replace the EGR valve and lastly reset the ECU so it recognises the new component.
    
Tim continued: “Other components to check include the air mass sensor – as a faulty sensor may not be measuring the correct air flow rate – the throttle body – because if this is malfunctioning it may result in an insufficient amount of air entering the engine – and the vacuum pump – because pneumatically controlled EGR valves can fail to actuate if it is not operating correctly.
    
He added: “Using our TECHASSIST technical expertise, we are able to demonstrate that drilling down to find the underlying fault is the key to the correct prognosis and as well as yielding better results, following a structured procedure will improved workshop efficiency by saving time and money.”

For more information visit: www.elta.co.uk

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