Paul Posted July 22, 2014 Report Share Posted July 22, 2014 Hello,Over the last couple of thousand miles, my SDi has felt as though it is surging when on the motorway. It almost feels as if the power comes in then goes again, but only at 54mph. I've watched the sat-nav when this happens and it may move by 0.1mph but nothing more than that. It's a very odd feeling. I've been searching on here and discovered it could be the EGR valve that needs to be cleaned. The car is now on 191,000 miles and I've had it since it was on 25,000 and it's never been done, so perhaps now is the time. I have a couple of questions though for the people who have undertaken this job: Please could you show me where the EGR valve is? Is it worth putting Redex fuel system cleaner into the tank and giving it a blast to fix the problem? Thank-you everyone Quote Link to comment Share on other sites More sharing options...
Skezza Posted July 23, 2014 Report Share Posted July 23, 2014 I would consider a diesel purge Quote Link to comment Share on other sites More sharing options...
Ant0889 Posted July 23, 2014 Report Share Posted July 23, 2014 I own the TDI version Arosa, cleaning the EGR got rid of my hesitance in 5 gear at 35-40mph and has improved my mpg. I also chucked in some Redex diesel, some will say it doesn't work, but from my personal experience it improved my mpg. Quote Link to comment Share on other sites More sharing options...
Paul Posted July 23, 2014 Author Report Share Posted July 23, 2014 I also chucked in some Redex diesel, some will say it doesn't work, but from my personal experience it improved my mpg.Thanks. I bought a bottle of Redex fuel system cleaner this evening. I need to put half the bottle in with the next full tank. With an SDi, it can be a long wait until the tank is empty Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 23, 2014 Report Share Posted July 23, 2014 The redex diesel cleaner is a gyp. Not that it doesn't work but it's pretty much 2 stoke. Buy a litre of that and throw it in. Quote Link to comment Share on other sites More sharing options...
Skezza Posted July 23, 2014 Report Share Posted July 23, 2014 Does redex even work? Surely the best way is to do a proper diesel purge. It isn't that hard and has proven results. Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 23, 2014 Report Share Posted July 23, 2014 Does redex even work? Surely the best way is to do a proper diesel purge. It isn't that hard and has proven results.Diesel purge is only a injector cleaner. 2stroke will clean and lube the fuel pump, injectors and engine. It won't clean like diesel purge for ghe injectors. Quote Link to comment Share on other sites More sharing options...
Skezza Posted July 24, 2014 Report Share Posted July 24, 2014 Diesel purge is only a injector cleaner. 2stroke will clean and lube the fuel pump, injectors and engine. It won't clean like diesel purge for ghe injectors.I thought 2 stroke would leave soot Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 25, 2014 Report Share Posted July 25, 2014 I thought 2 stroke would leave sootNo 2 stroke is clean. You can use it with dpf's too. Have a read up on it. Good stuff. Quote Link to comment Share on other sites More sharing options...
Paul Posted July 25, 2014 Author Report Share Posted July 25, 2014 Thanks everyone for the advice Last night I put in half a bottle of Redex fuel cleaner when I filled the tank and then I had 'spirited' drive home. I gave her an Italian tune-up and held her in gear for much longer than normal. I certainly wasn't driving economically. I'm pleased to say that the surging has already gone but I'll keep you updated on if it returns. Incidentally, returning to my original question, please could someone tell me how I would go about dismantling the EGR valve so that it can be serviced? Thank-you Quote Link to comment Share on other sites More sharing options...
mattarosa Posted July 25, 2014 Report Share Posted July 25, 2014 ETKA says number one is the EGR, I dont think you can actually split them open. the best bet would be take it off and follow the EGR Cleaning guide on here :http://forums.clublupo.co.uk/index.php?/topic/86131-how-to-simple-egr-cleaning-guide/ Quote Link to comment Share on other sites More sharing options...
Paul Posted July 27, 2014 Author Report Share Posted July 27, 2014 Thank-you mattarosa for the ETKA diagram and the link; that's a great help Quote Link to comment Share on other sites More sharing options...
Skezza Posted July 28, 2014 Report Share Posted July 28, 2014 Paul, let me know how you go about this. Quote Link to comment Share on other sites More sharing options...
Paul Posted August 6, 2014 Author Report Share Posted August 6, 2014 Well, it's been about two weeks since I posted my question so I thought I'd best give an update. As I've never messed with the EGR valve before, I was apprehensive. So I filled her up with Esso's diesel (instead of Asda's) and put in half a bottle of Redex fuel cleaner. I drove as if my hair was on fire and held her at higher revs than usual. Instantly she felt more eager and as the miles went by, she felt more lively. Today I refilled the tank (and put in the other half bottle of Redex) and I can report that the surging has completely gone. I'll stick with Esso's diesel and if the surging returns when driving economically, I'll then look at removing the EGR valve. For the time being though, it seems that all she needed was a good blast. Thanks again for your help and advice Quote Link to comment Share on other sites More sharing options...
Skezza Posted August 7, 2014 Report Share Posted August 7, 2014 I really have no idea how redex works but it sounds as though it's simply a bit like diesel purge. Good stuff anyway. Quote Link to comment Share on other sites More sharing options...
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