- The jump-start might have provided a temporary charge, but the battery may have drained while the car was sitting.
Recharge or replace the battery.
- The alternator might not be charging the battery properly.
Have the alternator tested and replaced if faulty.
- Fuel pump failure, clogged fuel filter, or faulty injectors could prevent fuel from reaching the engine.
Check fuel pressure, fuel pump, and fuel filter.
- Faulty spark plugs, ignition wires, or distributor problems can disrupt the ignition process.
Check and replace any worn or damaged components.
- Corroded battery terminals, loose wiring connections, or problems with the starter solenoid can cause starting difficulties.
Clean terminals, tighten connections, and inspect wiring.
- A malfunctioning coolant temperature sensor might provide incorrect engine temperature information to the computer, causing the engine not to start.
Check and replace if necessary.
- A damaged starter motor or its related components (solenoid, wiring) can prevent the engine from cranking.
Have the starter checked and serviced.
- Some vehicles have anti-theft systems that may prevent the car from starting if they malfunction or lose synchronization with the key.
Check your car's security system and any related keys/remotes.
- More severe issues like seized engine parts, timing belt failure, or internal damage can also cause a no-start condition.
If all other potential solutions have been exhausted, further mechanical diagnosis may be required.