My vauxhall vectra b 2.0 dti has severe power loss. When i stop at lights, engine managment light comes on but when i get to 2-3 thousand revs it goes out but still the car is not pulling properly. Ive had this problem before and turned out to be the crank shaft sensor however this time ive ruled that out... Ive changed the mass flow sensor to no avail... Diagnostics said EGR valve, changed that, no joy! So ive checked all air flow sensors and pipes including vacum pump
and all seem in perfect working order... Ive even serviced it. Any ideas or help would be great.

Steve, June 2011

Thanx for your input but ive checked all pipes and theyre fine... Im stuck... No cash to take it to the garage.

Steve, June 2011

Ive had this fault on a mates and it turned out to be a vacuum pipe to the egr valve had a pin hole in it

marzy, June 2011