There are a few things that may cause this to happen, such as a clogged fuel filter, a failing fuel pump, a restricted fuel line or in some cases,
a faulty fuel pressure sensor.
Nissan Serena S - Hybrid recalled for
faulty fuel pressure sensor — CBU units in Malaysia affected
Not exact matches
Other causes of hard starting are a
faulty engine coolant temperature switch (
sensor), worn spark plugs, inadequate
fuel delivery or
pressure (e.g., clogged
fuel filter), dirty
fuel injectors, contaminated or old gasoline, poor engine compression, and so forth.
Hi There, There are a number of things that may cause the car to hesitate when accelerating such as low
fuel pressure, a dirty or
faulty mass air flow
sensor, clogged or dirty
fuel injectors, a
faulty throttle position
sensor...
There are many causes of hard starting but illustrative ones are a
faulty engine coolant temperature switch (
sensor), worn spark plugs, inadequate
fuel delivery or
pressure (e.g., clogged
fuel filter), dirty
fuel injectors, contaminated or old gasoline, malfunctioning idle air control valve, poor engine compression, and so forth.
Possible problems include a
faulty Mass Airflow
Sensor, a Crankshaft Position
Sensor, and the Loss of
fuel pressure.
Stalling at idle could be due to a
faulty mass airflow
sensor,
faulty camshaft or crankshaft position
sensors, worn spark plugs, wires or defective ignition coil (s), inadequate
fuel delivery or
pressure (clogged
fuel filter, injectors,
faulty fuel pump or pump circuit), contaminated or old gasoline, defective throttle position
sensor,
faulty idle air control valve, leaks in the EGR system, intake vacuum leaks, and so forth.
There are many causes of hard starting but illustrative ones are a
faulty engine coolant temperature switch (
sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate
fuel delivery or
pressure (clogged
fuel filter, dirty
fuel injectors), and contaminated or old gasoline.
There are several possible sources that trigger these two codes including a
faulty fuel pressure regulator, weak
fuel pump, clogged
fuel filter,
faulty powertrain control module, vacuum leak,
faulty injector (s),
faulty oxygen
sensor (s) and a
faulty mass air...
Fuel related misfires can be caused by many different things such as low fuel pressure, faulty or dirty fuel injectors, a faulty O2 sensor, a dirty or failing mass air - flow sensor, a faulty or dirty idle air control valve or a vacuum or intake l
Fuel related misfires can be caused by many different things such as low
fuel pressure, faulty or dirty fuel injectors, a faulty O2 sensor, a dirty or failing mass air - flow sensor, a faulty or dirty idle air control valve or a vacuum or intake l
fuel pressure,
faulty or dirty
fuel injectors, a faulty O2 sensor, a dirty or failing mass air - flow sensor, a faulty or dirty idle air control valve or a vacuum or intake l
fuel injectors, a
faulty O2
sensor, a dirty or failing mass air - flow
sensor, a
faulty or dirty idle air control valve or a vacuum or intake leak.
The potential causes of Diagnostic Trouble Code P0420 include a damaged muffler or leaks in the muffler, damaged exhaust manifold or leaks in the exhaust manifold, damaged exhaust pipe or exhaust pipe leaks, misfiring in the engine, oil contamination in catalytic converter, a
faulty catalytic converter, a
faulty engine coolant temperature
sensor,
faulty front oxygen
sensor,
faulty rear oxygen
sensor, damaged oxygen
sensor wiring, oxygen
sensor wiring that is not properly connected, damaged oxygen
sensor connectors, a
fuel injector that is leaking,
fuel pressure that is high, and other causes.
However, if all cylinders are affected, you would test, in turn: the
fuel pressure regulator,
fuel pump
pressure, check for a clogged
fuel filter, vacuum leak,
faulty oxygen
sensor (s) and
faulty mass air flow
sensor.
This may be caused by many things such as low
fuel pressure, a bad mass air flow
sensor or a
faulty idle air control valve.
There are a number of things that may cause the car to hesitate (https://www.yourmechanic.com/services/engine-hesitates-during-acceleration-inspection) when accelerating such as low
fuel pressure, a dirty or
faulty mass air flow
sensor, clogged or dirty
fuel injectors, a
faulty throttle position
sensor or...
Leaking
fuel injectors could cause this problem, high
fuel pressure, or a
faulty coolant temperature
sensor signal...
Stalling at idle could be due to a
faulty mass airflow
sensor,
faulty camshaft or crankshaft position
sensors, worn spark plugs, wires or defective ignition coil (s), inadequate
fuel delivery or
pressure (clogged
fuel filter, injectors,
faulty fuel pump or pump...
Weak
fuel pressure (could be caused by a
faulty fuel filter or
fuel pressure regulator) bad crank position
sensor,...
Stalling and rough idle in the circumstances you describe could be due to a
faulty mass airflow
sensor,
faulty camshaft or crankshaft position
sensors, worn spark plugs, wires or a defective ignition coil, inadequate
fuel delivery or
pressure (clogged
fuel...
Examples of vacuum leaks include: leaking intake manifold gasket, broken PCV valve or PCV hose, disconnected vacuum line, cracked vacuum line, ripped intake snorkel -
faulty fuel injector - damaged engine computer (PCM)- low
fuel pressure - leaking head gasket - low compression in the affected cylinder - valves that are out of adjustment - bad mass airflow
sensor (random misfire).