Problem Reports
Problem with your car? See what our experts say or submit your own.
2002 Nissan Sentra Problems
Fuel Pressure Regulator May Bleed Off Pressure Overnight
If the vehicle is hard to start after setting overnight, the problem could be the fuel pressure regulator has failed and is allowing the fuel pressure to bleed off. A failed fuel pressure regulator will should be replaced.
Check Engine Light/Loss of Power Due to Throttle Body Failure
The electronic throttle actuator (throttle body) can fail causing a loss of power and illumination of the Check Engine Light.
Failed Mass Air Flow Sensor May Cause Driveability Issues
The mass air flow (MAF) sensor can fail, causing various drivability problems. Our technicians remind us that proper diagnoses should be performed to confirm the cause of any driveability concerns.
Engine May Stall Due to Failed Crankshaft and/or Camshaft Sensor
The engine may stall at times due to a failed crankshaft position sensor and/or camshaft position sensor, These sensors can fail intermittently as they warm with the engine. Sensors on certain models have been recalled by Nissan and will be replaced as necessary. Please visit our recall section for this model to see if your vehicle is covered by this recall.
Check Engine Light Due to Catalytic Converter Failure
The catalytic converter closest to the cylinder head can fail causing illumination of the Check Engine Light. Prompt repair of this problem is recommended because the catalyst material can be sucked into the engine and cause internal damage.
Internal Engine Damage Caused by Screws From Intake Manifold
Screws inside the intake manifold can become loose causing internal engine damage if they fall out completely. Our technicians report that using a strong thread locker on the power valve butterfly screws can help prevent them from becoming loose.
Engine control unit may fail and need replacement
Hesitiation or Rough Idle Due to Faulty EGR Valve
The EGR Valve can malfunction causing a hesitation when accelerating, rough idle, or idle hunting (surging or idle going up-and-down). If the valve malfunctions, there may or may not be a Check Engine light.
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