Ian Foster expects to stay on as All Blacks head coach as New Zealand Rugby bosses "take stock" following the win over South Africa on Saturday.

There remains uncertainty over Foster's future despite a 35-23 Rugby Championship victory over the world champions at Ellis Park.

New Zealand had lost five of their past six Tests - and three in a row - before stopping the rot in Johannesburg.

NZ Rugby chief executive Mark Robinson had only guaranteed Foster would remain in his role for the two clashes with the Springboks and revealed there would be a debrief following a defeat and a win in South Africa.

He said on Sunday: "We've been having conversations right through this time, we believe we know where we stand and we've just got to work through that with him.

"We'll take stock of the conversations, the information coming out of the camp and comment later in the week."

Robinson added: "These have been challenging times right through the last few weeks. There is a huge amount of passion and speculation, a huge amount of expectation around the team and organisation, and we need to take the time we've got to set this team up for everything it needs to be successful."

Foster remained defiant, stating that he was not aware of Robinson's comments.

"I haven't heard or read those comments, but he's got a job to do," Foster told reporters. "I'm about to hop on a plane and go home.

"I'll be given feedback, no doubt, but my expectations are that I'm the All Blacks head coach and later in the week I'll be going to Christchurch and assembling the team until I'm told different."

Ardie Savea said he is "100 per cent" behind Foster following the win at the weekend and the head coach says he knows the players want him to keep his job.

"I certainly feel that I have the support and backing of the All Blacks," he said.

"There's still processes New Zealand Rugby want to go through. To coach this team, you have to have categoric support."