TORONTO -- Ontario's Progressive Conservatives will turn up the heat this week in their fight to bring down Premier Kathleen Wynne's government.

The minority Liberal government last week managed to block a Tory non-confidence motion that, if passed, would have sparked a provincial election.

A senior PC source told QMI Agency on Sunday that the party will introduce a new motion that would require the Liberals and NDP to explain in the house any reasons for refusing a non-confidence vote.

"The motion that we're bringing will force the house leaders to talk about it in the legislature," the source said.

Wynne's government will face the first of three confidence votes related to the budget by month's end.

A Forum Research Inc. poll revealed Saturday that the majority of Ontarians, and in particular Tory supporters, believe the Ontario Liberals lied to them about the true cost of relocating the Oakville plant.

The price has now been pegged at $310 million, not the $40 million stated by the Liberal government.

Wynne spoke out against the original Tory motion, saying her government believes the budget vote is sufficient.

For the non-confidence motion to go forward, all three house leaders would have to agree. Their discussion was behind closed doors, though.

The Tory source said this latest motion would at least make the house leaders explain themselves to the public.

Wynne has said she doesn't believe Ontarians want an election right now and is looking to the NDP to help get her first budget through the legislature.