bluboy Posted March 31, 2007 Share Posted March 31, 2007 Hi to you all again. Whilst nosing around under the bonnet of my Disco I noticed that the EGR valve wiring plug is missing and the thin vacuum hose disappears away towards the air filter and the front of the car. Is this some sort of modification?. I ask because it looks nothing like the diagram in the Haynes manual. Should I be concerned or has the previous owner done it for a reason. All suggestions welcome. Thanks. Quote Link to comment Share on other sites More sharing options...
RRX Posted March 31, 2007 Share Posted March 31, 2007 I would guess it's a vacuum operated egr valve instead just without the position switch built in. I would guess its just a variant by land rover but im sure someone will know why its different Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted April 1, 2007 Share Posted April 1, 2007 It doesn't matter what sort it is - either remove it altogether or disable it. Your engine will like you for it Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted April 1, 2007 Share Posted April 1, 2007 bluboy, My 300 TDi had the same EGR system, mine has an EDC engine, if you follow the thin vaccum pipe all the way to it's end there is a solenoid valve on the inner wing. I believe this is controlled by the EDC systems ECU rather than a seperate one used on the non EDC engines. when I removed my EGR i just un-plugged the solenoid connection and tied it back into the loom and then removed it and all the pipework along with the valve. It is well worth removing it if it is not working as it will be choking the engine inlet tract up with nasty black 'marmite'. HTH Pete Quote Link to comment Share on other sites More sharing options...
Beast5680 Posted April 2, 2007 Share Posted April 2, 2007 bluboy,My 300 TDi had the same EGR system, mine has an EDC engine, if you follow the thin vaccum pipe all the way to it's end there is a solenoid valve on the inner wing. I believe this is controlled by the EDC systems ECU rather than a seperate one used on the non EDC engines. when I removed my EGR i just un-plugged the solenoid connection and tied it back into the loom and then removed it and all the pipework along with the valve. It is well worth removing it if it is not working as it will be choking the engine inlet tract up with nasty black 'marmite'. HTH Pete can you just unplug the solenoid to prevent it working or do you have to blank it off to make sure? Quote Link to comment Share on other sites More sharing options...
RRX Posted April 2, 2007 Share Posted April 2, 2007 you can unplug it to stop it working but chances are the inlet manifold is full of black marmite and it may even be stuck open by now. Quote Link to comment Share on other sites More sharing options...
bluboy Posted April 5, 2007 Author Share Posted April 5, 2007 Thanks for all of the replies, I have been away from the computer for a couple of days. Dont want you all thinking I'm a rude git ignoring the advice. I've fitted one of those EGR blanking plates. Not noticed any differance so far but I'm sure it will help the engine breathe in fresher air. Quote Link to comment Share on other sites More sharing options...
bluboy Posted April 5, 2007 Author Share Posted April 5, 2007 Excuse my ignorance, but what is an EDC engine? I've no idea what this is. Still learning about my Disco. Thanks. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted April 5, 2007 Share Posted April 5, 2007 electronic diesel control basically a load of electronics that makes a Tdi go wrong like a Td5 fitted to the automatic vehicles - with fuelling mapped to give a bit more power compared to a proper Tdi Quote Link to comment Share on other sites More sharing options...
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