New EGR valve on Diesel

Questions specifically about a Diesel powered C3 (usually engine or fuel related problems)
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Diesel engine related problems
Think: Diesel engine, diesel fuel system, diesel injectors and glow plugs
My Name: Roy

Contributor
Posts: 22
Joined: Sat Jan 24, 2015 10:25 am
Model: C3 2006-2009, Facelift model
Year: 2008 (08)
Engine Size: 1.6 (16v)
Fuel Type: Diesel
Mileage: 81000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Anyone know how long I can expect a new EGR valve to last? The engine cut out and I coasted to a stop, with a "pollution control" warning. Local garage couldn't get diagnostics to find a fault, had to get Citroen franchise do it. They said the EGR was causing a short and therefore power failure to the injection rail. Cost me a small fortune to get it fixed, but if it lasts another seven years that won't be too bad overall. I keep hearing ideas about EGR valves getting sooty and sticky from too much town driving, and needing a good blast on a motorway to burn off the dirt. That sounds a bit old, like what I used to do with my Imp to clean the valves, is it really that un-technical?
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My Name: C3CAR

Guru
Posts: 2610
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Been thanked: 88 times

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Roy wrote:Anyone know how long I can expect a new EGR valve to last? The engine cut out and I coasted to a stop, with a "pollution control" warning. Local garage couldn't get diagnostics to find a fault, had to get Citroen franchise do it. They said the EGR was causing a short and therefore power failure to the injection rail. Cost me a small fortune to get it fixed, but if it lasts another seven years that won't be too bad overall. I keep hearing ideas about EGR valves getting sooty and sticky from too much town driving, and needing a good blast on a motorway to burn off the dirt. That sounds a bit old, like what I used to do with my Imp to clean the valves, is it really that un-technical?
Hi Roy,

There are 2 halves to a EGR valve. One half is the exhaust gas half which gets combustion gasses and coke form the burning of fuel. The other half (in your case) is an electronic solenoid made up of windings of fine wire electronically connected to the engine ECU.

An EGR valve should last the life of the car. Cleaning it will help the gasses flow more freely. As for why your control side blew, you probably won't ever find out why, but I would suspect a break down of the insulation on the windings.
My Name: Roy

Contributor
Posts: 22
Joined: Sat Jan 24, 2015 10:25 am
Model: C3 2006-2009, Facelift model
Year: 2008 (08)
Engine Size: 1.6 (16v)
Fuel Type: Diesel
Mileage: 81000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Thanks. I'm hoping that doesn't happen again then
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