Aussie C5 Driver Posted January 22, 2015 Posted January 22, 2015 Hi - just wanted to let anyone know the outcome of a surging problem we had with our car - we found the fix to be by placing a welsh plug in the EGR pipe (tight fit) with a 8mm hole drilled through the welsh plug - problem solved. Hope this helps other people. Quote
paul.h Posted January 22, 2015 Posted January 22, 2015 Thanks for the info. Does this mean you had a problem with the egr valve ? Note that if it has an effect on the exhaust emissions such a modification may not be strictly legal and in the future there may be checks at the MOT for such things. I have moved the topic in to a subforum since ones outside of one do not show after a few days and then are difficult to find. Quote
Aussie C5 Driver Posted February 3, 2015 Author Posted February 3, 2015 Hi spoke with the guy who gave me the tip and he said that as long as their is the 8mm hole drilled into the welsh plug no impact on the exhaust emissions - sealing it off completely would make the car unroadworthy here in Australia - but we have not had any further issues with surging. Quote
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