EFFICIENT RECIRCULATION
CAMBIARE talks to VITAL NEWS about the technology behind Exhaust
Gas Recirculation (EGR) valves and key troubleshooting points.
Functioning to recirculate a metered quantity of exhaust gas back into
the combustion process, the EGR valve is a critical component in the
modern engine management system. By reducing the amount of oxygen
entering the chamber, the EGR valve helps reduce the temperature
reached during the combustion process and helps to increase engine
efficiency. This in turn reduces nitrogen oxides (NOx) in diesel and
petrol engines.
COMMON CAUSES OF FAILURE
Due to the role of the EGR valve within the engine management system
and the harsh environment it operates in, it is susceptible to failure due
to the following causes:
THE CAMBIARE OFFERING
Cambiare’s EGR valve range comprises m ore than 150 parts that
covers over 9 million vehicles across the UK. This credible programme
affords quality assured, OE-specified replacement parts at a competitive
price point.
Cambiare offers pneumatic and electrical EGR valves covering popular
vehicle applications including the Audi A4, Volkswagen Golf and the
BMW 3 Series.
Cambiare EGR valves are backed by a 2-year/30,000-mile warranty.
Fully catalogued on the F:Drive, MAM Autocat and www.cambiare-
ve.com, Cambiare parts are available via same/next-day delivery.
• Soot, carbon and oil deposit build up
• Extreme temperatures that leads to valve damage
Symptoms of a faulty EGR valve include:
• Loss of engine power
• Engine juddering
• Car falling into ‘limp mode’
• Black smoke appearing from exhaust
THE
RIS
STAR ING
S!
If an EGR valve is proven faulty, installers should make a point to replace
it, rather than to clean the unit. It is also important to clean the pipework
leading to the EGR valve to ensure that existing deposits do not transfer
onto the new unit.
PRECISE TROUBLESHOOTING
EGR VALVES WITH COOLER
To avoid misdiagnosing an EGR valve as faulty, it is important to check
the other components that may cause similar symptoms to surface:
EGR valves remain as one of the top performing product groups
within the Cambiare portfolio. Rising astronomically within this
product category are EGR valves with coolers (VE360186 & VE360188).
Fitting a large variety of VAG applications, the EGR valves with coolers
cover more than 812,000 vehicles in the UK.
•
Air mass sensor: A faulty air mass sensor may not be measuring the air
flow rate correctly
•
Throttle body: A malfunctioning throttle body may result in an insufficient
amount of air entering the engine
Vacuum pump: A faulty vacuum pump may prevent pneumatic EGR valves to
•
actuate properly
NOTE: When inspecting an EGR valve, installers are advised to wear
protective gloves as it can be extremely hot whilst the engine is running.
Cambiare recognises that trends in the aftermarket are as dynamic
as the development of automotive technology. Thus, they continually
review and update their part offering to ensure that the aftermarket
can get the parts they need, when they need them.
ALSO AVAILABLE FROM CAMBIARE:
ABS
Sensors
Air Mass
Sensors
VITAL NEWS ISSUE 48
Exhaust Gas
Temp. Sensors
Fuel
Injectors
Fuel
Pumps
Ignition Coils
& Leads
Lambda
Sensors
Sensors &
Switches
Throttle
Bodies
EXHAUST GAS RECIRCULATION 7