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 our vectra had the problem of engine management light coming on exactly the same.

 diagnostics showed up fault code 400.

 this relates to the egr valve,had a fitter check it out who did our diagnostic check,he found that a vacuum pipe connector was perished and loose on the valve on the n/s wing,lo and behold,new connector fitted all checked on board computor cleared of faults and car has run perfect ever since

 by the way ours is a series b 2.2 dti ls estate nov 2000 model and max weight for towing at 85% is 1335kgs.manual gearbox tho.

 worth checking all vacuum pipes before spending loads of dosh.

get them to fit a swirl actuator as well cause its that actuator that causes the problem in the first place.

the first mainfolds had two piece brass swirl butterflys and the new ones have one piece alluminium ones but you will need a new actuator because the old on has performed too many swirl cycles hence bringing the eml light on

Quote: Originally posted by Trixama on 13/10/2008

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get them to fit a swirl actuator as well cause its that actuator that causes the problem in the first place.

the first mainfolds had two piece brass swirl butterflys and the new ones have one piece alluminium ones but you will need a new actuator because the old on has performed too many swirl cycles hence bringing the eml light on

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