I have a 2006 2.7TDV6 HSE with 20,000 on the clock. I recently noticed that the diesel engine noise was more noticeable when driving, I had a lack of power and fuel consumption had dropped from around 21mpg to an average of 15mpg. I booked it in to LR who advised me that the EGR valves needed replacing and this was my problem. As the car is only 6 months out of warranty and low mileage LR agreed to pay 50% of the costs. I have just got the car back and if I am honest it does seem a little more responsive but still noisy and the MPG is now varying between 15-18mpg so not good at all. Any ideas what might be causing this. The only change to the car in the last few months (November) is tyres. The four original contintental tyres were replaced with Bridgestones. Thanks.

One of my EGR's went and the day I went to pick it up, on test, the other side went - so maybe you have the same issue....

Just blank them off and remove the butterfly at the front... No more problematic egr's

More responsive as well...

what is the purpose of the EGR valves?
and what are the good points when they have been removed?

thanks
ben 06 RRS TDV6 HSE Stornoway grey with entertainment package 22" overfinch wheels brembo brakes, Remap, plus lots more

4.4V8 E30 bmw trackday car with bigger brakes than the RRS
06 1.9 cdti astra sportive van/work horse

Pinched from Wikipedia. (Sorry I mean transposed with kind permission )

In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in most petrol/gasoline and diesel engines.

EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. In a gasoline engine, this inert exhaust displaces the amount of combustible matter in the cylinder. This means the heat of combustion is less, and the combustion generates the same pressure against the piston at a lower temperature. In a diesel engine, the exhaust gas replaces some of the excess oxygen in the pre-combustion mixture.

Because NOx formation progresses much faster at high temperatures, EGR reduces the amount of NOx the combustion generates. NOx forms primarily when a mixture of nitrogen and oxygen is subjected to high temperature.

EGR in diesel engines

In modern diesel engines, the EGR gas is cooled through a heat exchanger to allow the introduction of a greater mass of recirculated gas. Unlike SI engines, diesels are not limited by the need for a contiguous flamefront; furthermore, since diesels always operate with excess air, they benefit from EGR rates as high as 50% (at idle, where there is otherwise a very large amount of excess air) in controlling NOx emissions.

Since diesel engines are unthrottled, EGR does not lower throttling losses in the way that it does for SI engines (see above). However, exhaust gas (largely carbon dioxide and water vapor) has a higher specific heat than air, and so it still serves to lower peak combustion temperatures. There are trade offs however. Adding EGR to a diesel reduces the specific heat ratio of the combustion gases in the power stroke. This reduces the amount of power that can be extracted by the piston. EGR also tends to reduce the amount of fuel burned in the power stroke. This is evident by the increase in particulate emissions that corresponds to an increase in EGR. Particulate matter (mainly carbon) that is not burned in the power stroke is wasted energy. Stricter regulations on particulate matter(PM) call for further emission controls to be introduced to compensate for the PM emissions introduced by EGR. The most common is particulate filters in the exhaust system that result in reduced fuel efficiency. Since EGR increases the amount of PM that must be dealt with and reduces the exhaust gas temperatures and available oxygen these filters need to function properly to burn off soot, automakers have had to consider injecting fuel and air directly into the exhaust system to keep these filters from plugging up.
[edit] EGR deletion

EGR deletion in diesel engines is considered justifiable by a wide range of people, including the environmentally conscious. Although deleting the EGR system results in increased NOx level hydrocarbon emissions, Particulates, Carbon monoxide and Carbon dioxide are drastically reduced. Furthermore, EGR deletion results in an increase in fuel economy as high as 25%. Exhaust gas recirculated back into the cylinders adds wear-inducing contaminants and causes an increase engine oil acidity, which can result in an inefficient, poorly running engine. The increased level of soot also creates the need for diesel particulate filters to prevent environmental contamination.

i see, thats cleared that up then
iv ordered a set of blanking plugs.

thanks for that 06 RRS TDV6 HSE Stornoway grey with entertainment package 22" overfinch wheels brembo brakes, Remap, plus lots more

4.4V8 E30 bmw trackday car with bigger brakes than the RRS
06 1.9 cdti astra sportive van/work horse

How can you modify an engine like this, especially if it's under warranty ? 2010 TDV6 3.0 HSE Santorini Black Tan Full Leather

Apparently sticking a fuel system cleaner additive in the car occasionally will help the egr valves to last much longer,
halfords sell a few different brands of these, you add it to the fuel tank then fill the car with fuel, it was a land rover tech that told me this.

Did anybody do it on the TDV8?
Can it be done? '08 RRS TDV8
I converted my diesel RRS to run on an environmentally friendly mixture of caribou fat and baby seals oil

The Jackal wrote:

I have a 2006 2.7TDV6 HSE with 20,000 on the clock. I recently noticed that the diesel engine noise was more noticeable when driving, I had a lack of power and fuel consumption had dropped from around 21mpg to an average of 15mpg. I booked it in to LR who advised me that the EGR valves needed replacing and this was my problem. As the car is only 6 months out of warranty and low mileage LR agreed to pay 50% of the costs. I have just got the car back and if I am honest it does seem a little more responsive but still noisy and the MPG is now varying between 15-18mpg so not good at all. Any ideas what might be causing this. The only change to the car in the last few months (November) is tyres. The four original contintental tyres were replaced with Bridgestones. Thanks.

Maybe they charged you but didn't do anything

...hi
i can confirm
remove the buttefly valve and bypass the egr....
trust me

I have heard somewhere on a LR forum that when LR Assistance come out to you when your EGR has failed, they have been known to put these blanking plates in as a temporary measure to get you going again until you get to the Stealership...

They will then relieve you of a rather large amount of cash or CC to replace the EGR valve.

Mine does pick up a lot better but then I re-programmed the ECU at the same time...

If its a warranty job let the dealer cough up.. Well they don't LR does... Otherwise blank them off....

P.S. It can be a b1tch of a job....

Just had 2 EGR's changed 2 weeks ago - is it worth getting them blanked off?? They are both under 12 month warranty now.....

Just had 2 EGR's changed 2 weeks ago - is it worth getting them blanked off?? They are both under 12 month warranty now.....

Triplets!!!!!

You could but I think a 'fault' would show on the diagnostics and when they service it they would get really p1553d off when they find the plates after removing the EGR's under the 12 month warranty...

Entirely up to you though.....