This could be a few things, especially if the vehicle is idling too low. Check your PVC hose, particularly the elbows for wear and tear or any holes or collapsing. You can repair these temporarily by wiping them off well to remove dirt and wrapping in electrical tape until you are able to get the part replaced.
Engine is idling too slow or the alternator is weak. Or battery is getting tired.
There are several things that can cause your Jeep to stall while idling. The timing may be off or your fuel filter may be clogged.
Idling for a Nissan Pulsar, like any vehicle, refers to the engine running while the car is stationary, typically with the transmission in "Park" or "Neutral." While idling can be necessary for warming up the engine or operating accessories, excessive idling can waste fuel and may lead to engine wear over time. It's generally recommended to limit idling to conserve fuel and reduce emissions. If you find yourself idling for extended periods, consider turning off the engine and restarting when ready to drive.
If the car dies while idling, the timing might be off. Other causes can include a clogged fuel filter or a bad spark plug.
Is the AC turned on?
The most likely cause is a faulty engine crankshaft position sensor.
Engine bounce is a phenomenon where the engine speed rises rapidly and then drops back down while the vehicle is idling. This can be caused by issues with the fuel system, ignition system, or engine timing. It can lead to rough idling and poor engine performance.
you are flooding the engine
Engine miss.
When a vehicle is idling, the engine may not produce enough heat to warm the coolant effectively, leading to cold air from the heater. In contrast, while driving, the engine works harder and generates more heat, allowing the heater to blow warm air. The engine temperature can rise while idling due to reduced airflow through the radiator and less coolant circulation, while driving increases airflow and coolant flow, helping to cool the engine.
it maybe just a timing problem
what causes the rear lights to stay on while engine is running. the car is park