* Crankshaft Position Sensor (CKP): This sensor is crucial for the engine's timing. If it fails, especially when it gets hot or cold, the engine won't start. The act of moving the car might slightly shift something, allowing the sensor to temporarily regain contact or function better.
* Cam Position Sensor (CMP): Similar to the CKP sensor, a faulty CMP can prevent the engine from starting. Heat and cold can exacerbate these issues.
* Ignition Switch: A failing ignition switch can intermittently cut power to essential components, causing the engine to stall. The movement and restart might be resetting the switch temporarily.
* Mass Airflow Sensor (MAF): A faulty MAF sensor provides inaccurate readings of the air intake, leading to a bad air-fuel mixture and stalling. Temperature changes can affect its performance.
* Battery or Alternator: While less likely given the restart ability, a weak battery or failing alternator could cause voltage drops when the engine is under stress (hot or cold). The short break may allow the battery to recover slightly.
* Wiring Issues: Loose or corroded wiring, especially in the engine bay, can cause intermittent problems that are more prevalent in extreme temperatures. Vibration from moving the car could momentarily restore a connection.
* Fuel Pump Relay: A relay that's failing intermittently due to heat could be causing the problem.
Why moving the car helps: Moving the car could do several things:
* Slightly shifting components: This could temporarily restore a bad connection in a sensor or wiring harness.
* Cooling components down (when hot): Moving the car allows air to circulate and cool down overheated parts, which may help a heat-sensitive component temporarily recover.
* Giving the battery a chance to recover: A short break may allow the battery to recover slightly from a voltage drop.
Important Note: This is just speculation. You absolutely need to have a qualified mechanic diagnose this. Driving a car with intermittent starting problems is dangerous. The underlying issue could worsen and cause a complete breakdown, or even a more serious accident. Don't attempt to fix it yourself unless you're experienced with automotive electrical systems. A proper diagnostic scan should pinpoint the exact problem.
