Removal of EGR question

[beast5680]

while having a look at a recently developed leak on SWMBO,s disco(turns out the lower steering box seal is leaking ) i started looking at the egr and how to remove it.
Looking at the pic below is the large boxy bit between the airbox and the turbo an airflow meter? should i just blank off the egr and refit it or remove the whole gubbins completelty?
if i remove it completly does removing the big bit with the wires in it have a detrimental effect? others i have seen didnt seem to have that bit on them making removal simpler :?

[gords]

The EGR valve is the bit attached to the manifold - I just removed the valve and attached pipe and blanked the holes left at each end. I also blocked the tube that connected to the EGR valve. All the wiring was left in place.

Have you read my post about it?

BTW, mine doesn't have that "large boxy thing"

[Range Rover Blues]

I'd suggest fitting a blanking plate in place of the gasket in the flange you can clearly see in the photo' then leave all the c**p in place so the engine thinks the EGR is still fitted, there are no holes to block up and all the bits keep working and don't seize, then it's a 5 minute job if it fails the MOT :)

[thumbs]

you can get the blanking plates and turbo hose with out the t piece from a landrover dealer or a authorised dealer (i.e rogers of bedford) cheaper

ask for 300tdi 90 stuff, makes the searching alot quicker

just got the bits to to mine saturday

[NeilWilson]

It is an airflow sensor, the workshop manual says.. "consists of a flap valve sensor which measures the fresh air flow into the engine. The sensor informs the ECM and provided the other conditions are met, will implement EGR."  Cheers.

Neil

[TimM]

The best advice is to junk the whole lot, blanking plate on the engine side, and a new hose (with no T-piece).

BUT, as RRB said if you simply fit a blanking plate this will be easily rectified should you have a problem with your MOT, and there will be no 'odd' signals sent to your ECU about a valve not functioning, because it still will be..... the vlave will operate, it just won't have any effect.

The blanking plate is LR Part No ERR4698 and the gasket is ERR7173

Just to be certain that everyone is talking about the same bit, this is your EGR valve:

[bushy]

Is it just as simple with a td5 discovery?and are the blanking plates available for the td5 through main dealers ?wouldnt mind trying this on my td5 as it seems sluggish when pulling away and when cold its even worse

[beast5680]

The best advice is to junk the whole lot, blanking plate on the engine side, and a new hose (with no T-piece).

BUT, as RRB said if you simply fit a blanking plate this will be easily rectified should you have a problem with your MOT, and there will be no 'odd' signals sent to your ECU about a valve not functioning, because it still will be..... the vlave will operate, it just won't have any effect.

The blanking plate is LR Part No ERR4698 and the gasket is ERR7173

Just to be certain that everyone is talking about the same bit, this is your EGR valve:

Yes i,ve seen your post Gords and looked under your bonnet, yours looked alot easier to blank off than mine does.

Junking the whole lot is ok Tim but i,m concerned about the removal of the airflow bit and its related electrickery screwing up the engine management stuff and then i have to get more hoses to replace that section etc :?  i think i,ll start with fitting a blanking plate in place first and seeing what difference there is

[TimM]

i think i,ll start with fitting a blanking plate in place first and seeing what difference there is

Thats all mine has and it seems to go a lot better - maybe some of the increase was in my mind, but it feels a lot better.  :D

Is it just as simple with a td5 discovery

The theory is the same, and there are blanking plates available (they look the same as the TD5 but I would check before ordering), have a word with thermidorthelobster as he has either just done it to his TD5 or is considering it at the moment.

[gords]

i think i,ll start with fitting a blanking plate in place first and seeing what difference there is

Thats all mine has and it seems to go a lot better - maybe some of the increase was in my mind, but it feels a lot better.  :D

In effect, that's what I have too! All the electrics are still there, but I have just removed the actual valve and pipe and sealed the vacuum tube.

I don't think this mod gives you loads of power, if any. What it did seem to do was make starting off and pickup much nicer! It also, seemed to be a bit more responsive at lower speeds/revs. Generally, just a bit nicer to drive :D

[TimM]

I don't think this mod gives you loads of power, if any.

Your right, not 1bhp increase in total, but the EGR effectively reduces power at low engine revs*, so it restores it (upwardly) to what it should be, and improves low end performance, which is when we notice the increase most.



*by reintroducing hot burn't gases back into the induction chamber (you engine runs best on cold air - hence the intercooler)

[300TDi Disco]

Hi guys just wondering what you do with the wiring connected to the egr

[Range Rover Blues]

Leave it alone, it makes no difference and will keep the EGR workinng if you ever need it, unless of course you have removed the valve in which case tape it up.