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Lawsuit Claims Ford F-150 Engines Have Flawed Intercoolers

Some of Ford Motor Co.'s F-150 pickup trucks have a defect that can cause the engine to stumble or stall in humid weather, according to a complaint filed on Tuesday with the U.S.
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Some of Ford Motor Co.'s F-150 pickup trucks have a defect that can cause the engine to stumble or stall in humid weather, according to a complaint filed on Tuesday with the U.S. District Court in Louisiana.

The lawsuit, which seeks class-action status, blames the intercooler used in 2011-2012 model F-150s.

The radiator-like device boosts power by lowering the temperature of intake air before it reaches the engine. The lawsuit claims that, in humid conditions, moisture may condense and collect in the intercooler after extended highway-speed driving.

If the driver then accelerates briskly, water could be drawn into the engine. That can cause a misfire or trick the engine control module into sharply reducing power, according to the complaint.

The lawsuit says Ford is aware of the problem and issued a memo to dealers describing a "stumble and/or misfire" that can occur after prolonged highway cruising in humid or damp conditions. The plaintiff wants Ford to recall the affected trucks and/or compensate owners.

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