Lack Of Power/Poor Acceleration
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Nissan Xterra, 2002 Nissan Sentra, 2002 Nissan Quest, 2002 Nissan Pathfinder, and 2002 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.
- Check ignition timing and Throttle Position (TP) sensor adjustment. See THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED in ON-VEHICLE ADJUSTMENTS article.
- Check Throttle Position (TP) sensor circuit.
- Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
- Check ignition circuits.
- Check fuel pump circuit.
- Check fuel injector circuits.
- Check fuel pressure regulator. See FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article.
- Check Exhaust Gas Recirculation (EGR) system.
- Check PCV system.
- Check Camshaft Position (CMP) sensor circuit.
- Check Mass Airflow (MAF) sensor circuit.
- Check front Heated Oxygen Sensor (HO2S) circuit.
- Check Engine Coolant Temperature (ECT) sensor circuit.
- Check Park/Neutral Position (PNP) switch circuit.
- Check knock sensor circuit.
- Check Vehicle Speed Sensor (VSS) circuit.
- Check ECM power supply and ground circuits.
- Check fuel delivery system.
- Check engine mechanical condition.
- Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
- Check EVAP system.