The Magpies surged into the top five last season and were praised for their high-scoring free-flowing football.
But they have struggled to fire in the current campaign, highlighted by a miserable 1-0 home defeat by West Ham on Sunday.
Ahead of Saturday's tricky home tie with Swansea, Pardew said: "We are all kind of looking at each other. We want to get firing, we want to score three or four goals and set the stadium alight.
"But it's not as simple as that, sometimes you have to graft your way through periods like this.
"I will be surprised if we go from West Ham to a real champagne performance. I think it will be something in-between - hopefully."
And regarding the challenge of facing Michael Laudrup's visitors, Pardew added: "It's a tough test for us because we are going to have a stadium that will expect us to win.
"Swansea keep the ball really well - like they did last year, they got a 0-0 here and it was a frustrating game for us. They defended very well, kept the ball and it's a difficult game.
"They are a well-run club, they have a basic principle that they want to stick to, a vision, and that's important for a football club, to know how you are going to play and what you want to do.
"They stick to it and the new manager has taken up from Brendan Rodgers and they have added a couple of real quality players, so they are a real problem team."