Why does my Vauxhall Astra engine keep stalling?

I have noticed that my Vauxhall Astra engine has been stalling frequently, especially when I am idling at a stoplight. I have tried changing the air filter and spark plugs, but the problem persists. Any suggestions on what could be causing this issue?

It is possible that your fuel filter is clogged and needs to be replaced. This can cause a lack of fuel flow to the engine, resulting in stalling. I would recommend getting the fuel filter checked and replaced if necessary.

Another potential issue could be a faulty idle control valve. This is responsible for regulating the idle speed of your engine. If it is malfunctioning, it could be causing your stalling issue. I would suggest having it checked and replaced if needed.

Have you checked your engine's sensors? A faulty oxygen sensor or mass air flow sensor can also cause stalling issues. I recommend getting them checked and replaced if necessary.