Can anyone please help.  Just had car diagnosed with intermittent fault on EGR valve and am trying to locate exactly where this is in the engine.  Can anyone help please. 

Hi Joan, 

The 2.7 Diesel V6 has two EGR Valves one each side of the V6 engine.

Apparently is is a mucky job, and I have had the code P0402 crop up a few times,  I nave used a Wynns Spray into the air intake. Just take out the air filter and with the engine running when warm at 1200 rpm spray in the whole can.

Recently however, I have used a fuel additive - a certain amount each fill up. It is called Diesel Auto Max and it is fro Millers Oils and readily available online or Halfords.

P0402 is a cumulation of exhaust gas i.e. a sticky valve  - sticking shut.  A good blast occasionally  --   3rd gear selected on the J gate for 10 minutes can clear it, or use the additive.

Let us know how you get on.

Regards,

Peter.

I have just had both mine replaced at a cost of £500 But be careful if you are still driving it around as you are not getting the revs you need to regenerate the DPF ( If it is in limp mode)

23 hours ago, Old Peter said:

Hi Joan, 

The 2.7 Diesel V6 has two EGR Valves one each side of the V6 engine.

Apparently is is a mucky job, and I have had the code P0402 crop up a few times,  I nave used a Wynns Spray into the air intake. Just take out the air filter and with the engine running when warm at 1200 rpm spray in the whole can.

Recently however, I have used a fuel additive - a certain amount each fill up. It is called Diesel Auto Max and it is fro Millers Oils and readily available online or Halfords.

P0402 is a cumulation of exhaust gas i.e. a sticky valve  - sticking shut.  A good blast occasionally  --   3rd gear selected on the J gate for 10 minutes can clear it, or use the additive.

Let us know how you get on.

Regards,

Peter.

Thank you Peter.  Did doing this sort the problem out permanently. My husband has done this today and said that when he put the spray in a load of dirt came out the exhaust so hopefully that has helped clean it. He has also put some Winns Diesal Fuel additive in and given it a good blast as you suggested.

Regards

Joan

21 hours ago, woodsy said:

I have just had both mine replaced at a cost of £500 But be careful if you are still driving it around as you are not getting the revs you need to regenerate the DPF ( If it is in limp mode)

Thank you. The car is not in limp mode so we have done what Peter suggested and will see if that helps. The code apparently means they are sticking not gone completely.  We have been quoted about £600 all in to have them replaced.

 

Hi Joan, 

I also use premium fuel in my car.   There is another thing I did almost three years ago which was to have the car given a Terraclean service which cleans out the fuel system and cost them was £125.

Preventative Maintenance is much better than paying a large sum to fix them after it is broken.

I have only had the code P0402 once in 2016.  When I first had it, the main dealer told me he could replace them if it happened again.  Over 3 years later and about £20 spent on additives the car is running very smoothly and returned 49.6 mpg driving down to Dorset last Autumn.

Regards,

Peter.

OXICAT has a very good reputation at around £20 a pop. Marketed in the UK by the BlueChem Group as a best cleaning additive for both petrol and diesel engines ...