Pattern parts / Running Problems

[royboy302]

Just a rant really ! I have had a running issue with my 2005 hdi berlingo ,
i have posted many threads about the hesitating at @50 mph ,
after new crank , camhaft and temp sensors , a genuine air flow metre ,
i still had the problem ! I brought a pattern egr valve after seeing black smoke markings
around the slots in the top of the old one , this still made no difference !
Last week after i had serviced it i could hear a hissing noise it was coming from
the new egr valve after taking it off it had failed !
So i bite the bullet and brought a genuine egr valve , fitted it yesterday , we have done
about 60 miles today and it runs like a dream no hesitation at 50 and pull better
than it ever has in the 14 months of owning it !
so i am never going to waste my time with pattern parts in future !!!!!!!