One such beneficiary, midfielder Adlene Guedioura had a confident debut, and was unlucky not to score Algeria's only decent chance when he rattled the bar with a header.
Wolves manager Mick McCarthy has already signed Belgium defender Jelle Van Damme from Anderlecht, striker Steven Fletcher from Burnley and Algeria midfielder Adlene Guedioura who had been on a season-long loan from Charleroi.
The match was held up late in the second half when a goal post was knocked over after Algeria's Adlene Guedioura collided with the netting, meaning 13 minutes of added time were played.
It looked as though Jarvis' goal would earn a point for Wolves, who lost substitute Adlene Guedioura to injury in the final minutes, until Heskey's header gave Villa their first league win away from home this season.