03 Ford focus zx3 20l cranking but not starting

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Your '03 Focus cranking but not starting—and only getting intermittent spark—points to a possible ignition control or wiring issue. Often, this can be due to a failing ignition coil, bad spark plug wires, or even a problem with the crankshaft position sensor, which tells the engine control module (ECM) when to fire the spark plugs. If the sensor or wiring to the ECM is faulty, it might explain the sporadic spark you're experiencing. Checking the sensor connection and wiring for damage or corrosion could help pinpoint the problem. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.