On Tuesday, Toyota Motor Corporation suspended sales of eight of its most popular models as they wait for replacements for defective accelerator pedals. Last week, the Japanese-owned automaker recalled 2.3 million U.S. vehicles due to the faulty part.

Toyota also announced that they have scheduled a production shutdown beginning next week after news surfaced that their accelerator pedals are prone to stick after normal wear.

The recall is affecting several new models including the 2010 Rav4, Corolla, Matrix, Tundra, Avalon and Sequoia. No Lexus or Scion division vehicles are involved in the massive voluntary recall.

“Our investigation indicates that there is a possibility that certain accelerator pedal mechanisms may, in rare instances, mechanically stick in a partially depressed position or return slowly to the idle position,” said Toyota USA group vice president Irv Miller.

Meanwhile, the automaker has not ended its relationship with gas pedal supplier CTS, which is currently developing a new part to meet Toyota’s tougher standards, USA Today reports.

Mitchell Walorski, head of investor relations for CTS, has said that they have no knowledge of any accident stemming from the accelerator pedals that the company supplies to Toyota.