getting my 1.6 16v ecotec engine sorted soon. had full service and it still cuts out now and then. Do the EGR thing as above first.
Its also been suggested that there are updates available for the ECU from vauxhall. Some have been charged around £40 for this although some are getting the treatment gratis.
I'm goin for the latter.
Hope this helps
Steviebhoy
August 2007