The Sky Blues drop to second, with West Brom taking third spot after a 4-0 thrashing of Ipswich.
Three goals in the final five minutes flattered the Baggies, who had been on the back foot as the Tractor Boys fought to get back into the game. Andrade Filipe Teixeira and Kevin Phillips both netted a brace.
Stephen Elliot put Wolves ahead at Sheffield United, but the Blades finally kick-started their season as they came back to secure a 3-1 victory.
James Beattie grabbed a brace, with Jon Stead also on the scoresheet.
Charlton remain in the play-off spots after fighting back from 2-0 down to earn a point at Colchester.
Mark Yeates and Kevin Lisbie at the Us ahead, but Svetoslav Todorov and Zheng Zhi rescued a point for the Addicks.
Jay-Jay Okocha made his first appearance as a Hull City player, but he was unable to inspire them to victory.
In fact they looked like losing to Rory Delap's strike, before David Livermore's equaliser three minutes from time.
Former Iron boss Brian Laws is still finding life tough as Sheffield Wednesday boss - the Owls have now endured their worst-ever season start after recording a fifth-straight loss.
Paul Gallagher scored the only goal of the game for Preston North End, as they saw off the Yorkshire side 1-0 at Deepdale.
Gary Megson couldn't get life as Leicester manager off to a winning start, as the Foxes were held to a 1-1 draw by QPR.
Norwich bear Crystal Palace 1-1, while Burnley and Blackpool played out a 2-2 draw in their Lancashire derby.
Cardiff came from behind to rescue a point in a 2-2 draw om the late kick-off at Plymouth Argyle.