2017-10-10
Check the fuel pressure and replace the fuel pump if necessary.
Inspect and clean the fuel injectors.
Test and replace the oxygen sensor if faulty.
Check and repair any wiring issues or loose connections in the fuel injection control circuit.
Verify and update the engine control module software, if available.
Faulty fuel injectors or fuel injector circuitry
Issues with the engine control module (ECM) or powertrain control module (PCM)
Malfunctioning oxygen sensor or exhaust gas recirculation (EGR) valve
Problems with the fuel pressure regulator or fuel pump
Clogged or restricted fuel filter
Engine misfires or stumbles during a cold start
Decreased fuel efficiency during the first few minutes of driving
Rough idle when starting the vehicle in cold conditions
Difficulty starting the engine, especially in colder temperatures
Irregular or fluctuating engine RPM during the initial startup