Ford is recalling about 3,100 F-Series ambulances because the engines can stop unexpectedly.
The F-350, F-450 and F-550 "Super Duty" ambulances have 6.7-Liter diesel engines. They're from the 2011 and 2012 model years.
Ford says a faulty exhaust gas temperature sensor can cause the engines to stop and not be restarted for at least an hour. The company says it has no reports of the problem affecting patient care.
Most of the ambulances were sold in the U.S., with some in Canada and other countries.
Dealers will replace the sensor.
Ford says the problem could occur on non-ambulance versions of the same trucks, but the company isn't recalling them. Drivers will get a warning and enough time to safely pull off the road before the engine shuts down.
Earlier, Ford also said it is recalling 2,618 Focus Electric cars because of potential loss of power to the wheels while driving.
The automaker said nearly all the cars from model years 2012 to 2014 were sold in the United States. A spokeswoman said there was one crash and no injuries related to the issue.
Ford said the issue is caused by software anomalies associated with the power control module and is accompanied by a "Stop Safely Now" warning in the instrument cluster. Should the issue occur, the car's braking and steering systems would continue to operate normally.
All the affected vehicles were built at the Michigan Assembly Plant in Wayne from September 15, 2011 to August 8, 2013, Ford said. The recall affects 2,455 cars in the United States, with the rest in Canada and federalized territories.
The Associated Press and Reuters contributed to this report.
First published November 1 2013, 7:08 AM