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Home >> Kia >> 2024 >> Niro EX >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Engine Control/Fuel System - General Information (HEV) >> Troubleshooting >> Basic Troubleshooting Guide >> Symptom Troubleshooting Guide Chart >> Engine is unstable while driving
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Engine is unstable while driving

Inspection Procedure Remark
  1. Inspect fuel pressure
  2. Inspect ignition system

    Inspect Engine Coolant Temperature Sensor (ECTS) and circuit (Check the DTC)

  3. Inspect long-term fuel trim and short-term fuel trim
  4. Inspect and test Electronic Throttle Control (ETC) module
  5. Inspect exhaust system
  • Check the DTC
  • Low fuel pressure
  • Intake air leakage
  • Contaminated fuel
  • Weak sparks when ignited