My check engine light came on yesterday, and the car is running a bit rough, especially at idle. It feels like it's misfiring sometimes. I haven't noticed any other major issues.
Description du Problème
Questions Fréquemment Posées
Questions courantes liées à ce problème et à ses solutions.
When did the ABS warning light first illuminate?
Did the horn stop working suddenly, or was it intermittent before failing completely?
When did you first notice this increased vibration?
When did you first notice the puddles?
Does the window make any noise at all when you try to operate the switch (e.g., a click, a hum, or a grinding sound)?
When did this sound first start occurring?
When did this problem start occurring?
When did you first notice these symptoms?
Did this problem occur suddenly, or has it been developing over time?
Does the stalling happen more frequently when the engine is warm or cold?
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Causes Identifiées
Ignition System Malfunction
80%Worn spark plugs, faulty ignition coils, or damaged spark plug wires can lead to incomplete combustion, causing misfires and rough idling.
Fuel Delivery Issue
65%A clogged fuel injector, a weak fuel pump, or a dirty fuel filter can restrict fuel flow to the engine, leading to lean conditions and misfires.
Vacuum Leak
55%A leak in a vacuum hose or intake manifold gasket can allow unmetered air into the engine, disrupting the air-fuel mixture and causing rough idling.
Mass Airflow (MAF) Sensor Problem
50%A dirty or faulty MAF sensor can send incorrect air intake readings to the engine control module (ECM), leading to an improper air-fuel mixture and rough running.
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