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If your car struggles to start but runs fine once it’s on, the issue often lies in the starting system rather than the engine itself. Common causes include a weak or failing battery, worn starter motor, faulty ignition switch, or problems with the fuel delivery system during startup. Additionally, sensors like the crankshaft or camshaft position sensors can cause starting difficulties without affecting running performance. Checking the battery charge, starter condition, and relevant sensors is crucial to diagnosing why the engine hesitates to start but runs smoothly afterward.

00:00 - Intro: The Core Problem
00:36 - Cause 1: Weak or Aging Battery
01:25 - Cause 2: Worn or Failing Starter Motor
02:00 - Cause 3: Fuel Delivery Problems
02:40 - Cause 4: Faulty Coolant Temperature Sensor (ECT)
03:14 - Cause 5: Idle Air Control (IAC) & Throttle Body
03:41 - Cause 6: Parasitic Battery Drain
04:04 - Cause 7: Faulty Crankshaft Position Sensor (CKP)
04:28 - Cause 8: Vehicle Security & Immobilizer System
04:50 - How to Diagnose the Issue
05:30 - Preventative Maintenance Tips
05:59 - Debunking Common Starting Myths