THE INVESTIGATION: U.S. safety regulators have intensified their investigation into complaints of engine stalling in 2005-2007 Toyota Corolla sedans and Matrix hatchbacks. The probe covers 1.8 million vehicles.
THE TARGET: The National Highway Traffic Safety Administration is looking at two possible causes behind the stalling: Improper coating on circuit boards and a crack in the surface of a glass coating.
THE REMEDY: Neither Toyota nor the government have announced a recall, though the latest probe will determine if there is a safety defect that needs fixing.

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