The company closed its Dearborn truck plant for five weeks during the quarter, contributing to $700 million in negative cash flow. Sales were up in Asia, but investment in new plants and products there caused pretax profits to drop 62 percent to $44 million. Last month, the company dropped its full-year pretax profit forecast to $6 billion, citing falling sales in South America and a $500 million charge for recalling 850,000 vehicles with defective air bags.