Paola
Unstable engine problems and loss of power in BMW 3
(Translated from Spanish)
Summary of the thread
A 2019 BMW 3 with 60,000 km is experiencing engine instability, jerking during acceleration, and power loss, with the engine light on. Possible causes include faulty spark plugs or ignition coils, which can lead to engine misfires and jerking. Replacing these components might resolve the issue, but if problems persist, a professional mechanic should inspect the vehicle for further diagnosis.
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3 comment(s)
Lilmanhot
Code P0171, changed the MAP sensor and mass airflow sensor, also the PCV valve.
CarlyMechanic
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Code P0171, changed the MAP sensor and mass airflow sensor, also the PCV valve.
Since you've already replaced the MAP sensor, mass airflow sensor, and PCV valve, the next step is to check for any vacuum leaks in the intake system, as these can also cause a P0171 code. Inspect hoses and connections for any signs of wear or damage. If you find any leaks, repairing them might resolve the issue. Let us know how it goes or if you have any further questions.
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BMW
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3
CarlyMechanic
It's important to address these issues promptly, as they could affect your safety. Start by checking the spark plugs and ignition coils, as they can cause engine misfires and jerking. If they are worn or damaged, replacing them might resolve the issue. If the problem persists, it's best to have a professional mechanic inspect the vehicle. Please update us on your progress or if you have any further questions.