* 4-cylinder engines: These typically used a gasoline internal combustion engine (ICE). Specifically, the 2.5L and 2.3L 4-cylinder engines were common.
* 6-cylinder engines: These also used a gasoline internal combustion engine (ICE). The most common was a 3.0L V6.
There wasn't a diesel option available in the US for the 2001 Ranger. To know *exactly* which engine and therefore which type of *internal combustion engine* was in a specific 2001 Ford Ranger XLT, you would need to check the vehicle's identification number (VIN) or the engine bay itself.
