DETROIT — Toyota has begun shipping parts to fix the faulty gas pedals that led to a still-expanding recall and an unprecedented decision to stop selling and building some of its top-selling models, but it still could not say Thursday when millions of its drivers would get their cars fixed.

The world's largest automaker, bleeding millions of dollars a day in lost sales, also declined to say where the parts are going — to plants so production can start again or to dealers so they can start fixing cars sitting in their showrooms or already on the road.

Amid the uncertainty, the recall grew wider. Toyota expanded the recall beyond an initial 2.3 million vehicles and said it would recall an untold number in Europe and about 75,000 in China because of bad gas pedals that can become stuck.

The recall even spread beyond Toyota. Ford stopped production of some full-sized commercial vehicles built by a Chinese joint venture because they have accelerators built by the same parts supplier as in the Toyota recall.

Separately, Toyota recalled 1.1 million more vehicles this week because of floor mats that can bend and hold down the gas.

The gas pedal system recall includes 2009-10 RAV4, the 2009-10 Corolla, the 2009-10 Matrix, the 2005-10 Avalon, the 2007-10 Camry, the 2010 Highlander, the 2007-10 Tundra and the 2008-10 Sequoia.

Toyota said the maker of the faulty gas pedal systems, CTS of Elkhart, Ind., was cranking out replacements at three factories and some of them already had been shipped to Toyota.

At the same time, Toyota engineers are working with CTS to develop ways to repair, rather than replace, the pedal systems in existing cars and trucks, said spokesman Brian Lyons.

But there was no estimate for how long it would be until customers can get their cars fixed. The parts are being made at CTS plants, but Toyota has not said where they're going within its system of plants and dealers.

"We're well past the root cause identification, and we're well past what needs to be done to change the pedal assembly itself," Lyons said.

House lawmakers, meanwhile, said they intend to hold a Feb. 25 hearing to review the complaints of sudden unintended acceleration in Toyota vehicles.

"Like many consumers, I am concerned by the seriousness and scope of Toyota's recent recall announcements," said House Energy and Commerce Committee Chairman Henry Waxman, D-Calif. In a statement, Toyota pledged its "full cooperation" with the committee.

The episode has tarnished Toyota's once-sterling image of reliability. Experts say the longer it goes on, the more Toyota's competitors will benefit. Transportation Secretary Ray LaHood said he had no details of how the problems would be fixed but said he had "no criticism of Toyota on this. They followed the law and they're doing what they're supposed to do."