406oc.co.uk

Hi all, going to be taking the EGR off tomorrow, and give it a good clean,
Just wondered if it was worth blanking while its off?
And which part is it blanked off from? Under the EGR, or at the end of the EGR Cooler?
My egr is the same as http://www.ebay.co.uk/itm/Peugeot-406-2 ... 233edb781b


Car is a Peugeot 406 2.0 HDi, 187k 2000 Xreg.

There seems to be some discussion on a variety of Forums as to the wisdom of removing EGRs. There is an argument that removing the EGR causes a variety of engine problems. Personally, I don't know, but have never felt the need to remove one on any of my cars. Most of the cars which are deemed to have suffered through removal are pretty high mileage so it is possible it is just coincidence. Just something to think on.

I blanked mine under the EGR, the logic was 2 fold;
Incredibly difficult for an MoT inspector to see it
Minimal chance of exhaust gases leaking into engine bay

Many people state that it improves responsiveness and fuel economy but I did it mainly to prevent the intake filling up with crap, ideally you should clean the intake as well.

Get it blanked!

I blanked both on my 406 HDi 90 and on the 407 2.2 HDi and in both cases it's made a substantial difference to how it behaves when the engine is cold and the throttle response.

It's preferable to blank at the EGR end rather than the intake end because that way there is never any pressure from the exhaust gas in the EGR system. (For this reason clamping the vacuum supply to the EGR valve is a good way to blank on the 406.)

I believe some engine management systems are more sensitive than others to the consequences of EGR blanking. The system knows something is wrong because more air than expected is being drawn through the MAF. Although this is detected on Peugeots and a fault is logged it doesn't cause the EML to come on or limp mode.

I also blanked my EGR, at both the EGR end ( which is a faff ) and also at the inlet end - but this was only for piece of mind regarding possible leaks.

I also recommend the blanking, and when doing this you can sort out the vacuum pipes at the same time as you will have better access. If you need to be convinced about the blanking then since mine has been done I have no smoke at all, even when I drive with 'spirit'.... also my engine isn't breathing in its own sooty and carbon filled excrement.

As RWB says, there will be a fault logged on the ECU for when its time for a diagnostic session, but it won't appear on the clock/stereo display screen.

+1 getting rid of mine added about 5 mpg, improved throttle response and general driveability. [/2p worth]

Consensus?
That's not supposed to happen on the Internet.
Quick, someone disagree!

rwb wrote:Consensus?
That's not supposed to happen on the Internet.
Quick, someone disagree!

If you blank the EGR the tree-huggers will be after you....

GingerMagic wrote: If you blank the EGR the tree-huggers will be after you....

Good, when they let go of the tree, I can set about it with my chainsaw in time for winter.

Doggy wrote:

GingerMagic wrote: If you blank the EGR the tree-huggers will be after you....

Good, when they let go of the tree, I can set about it with my chainsaw in time for winter.

We soooo need a like button [emoji48]

I have disabled the EGR on all of my previous cars. I see it like this------ You filter the air down to X micron, you cool the compressed air down to X degC, you do your best to keep your engine maintained with new filters and oil etc.... then you let your precious engine consume hot, carbon filled shitty air to please the tree huggers/tax shops.

This shitty carbon filled hot air then mixes with the crank breather oil mist and creates a nice sticky layer of coal all over the insides of your engine, thus creating poor airflow. This poor airflow creates poor combustion which creates exhaust smoke.

You then go out and buy all sorts of engine treatments which, in there production create massive amounts of pollution.

Disable it.

Looks like i'll be blanking it then

Thanks for all the information.

Had my plate yesterday so am looking for tips on how to change.... Looks like 3 bolts after a quick look around the engine bay, is it that simple? and will I have to use any sealant?

Oh and do I clean any build up of crud that's already there?

Which end did you buy the blanking plate for? If it's for the inlet it should only be X2 cap heads. I would take the complete elbow off and clean all the crap out top stop any being dislodged and making its way towards the valves etc.... you will probably need a new gasket for the elbow if you do that. As far as I can remember, the EGR/inlet connection has a metal gasket in it which you can reuse. ( might be wrong though)

Uberderv wrote:Which end did you buy the blanking plate for? If it's for the inlet it should only be X2 cap heads. I would take the complete elbow off and clean all the crap out top stop any being dislodged and making its way towards the valves etc.... you will probably need a new gasket for the elbow if you do that. As far as I can remember, the EGR/inlet connection has a metal gasket in it which you can reuse. ( might be wrong though)

This one i think it's the inlet http://www.ebay.co.uk/itm/261568966084? ... EBIDX%3AIT

If I was looking at the right part earlier it is two bolts but there's another close to it that may have to come out to gain access it looks like some kind of bracket.... Why do I always ask questions on here when she's out in the car?