Fuel delivery issues:
A faulty fuel pump, clogged fuel filter, or obstructed fuel lines could be causing insufficient fuel supply to the engine. Check for any clogs or leaks in the fuel system and ensure the fuel pump and filter are in working condition.
Spark plugs or ignition system problems:
Worn-out or damaged spark plugs, a faulty distributor cap or rotor, or a failing ignition coil can lead to weak spark or misfires, causing stalling. Check the condition of the spark plugs and ignition system components and replace or clean as needed.
Idle control valve (ICV) malfunction:
The ICV regulates the amount of air that bypasses the throttle during idle. A faulty or dirty ICV can result in improper idle speed control and stalling. Inspect and clean the ICV or replace it if necessary.
Throttle position sensor (TPS) failure:
The TPS detects the throttle valve's position and communicates it to the Engine Control Unit (ECU) to regulate air-fuel mixture and ignition timing. A faulty TPS can send incorrect signals, leading to stalling or engine performance issues. Check the TPS and clean or replace it if it's defective.
Air intake system leaks:
Unmetered air entering the engine through leaks can disrupt fuel-air mixture and cause engine stalling. Check for any unsealed connections, cracked hoses, or damaged vacuum lines in the air intake system and seal or replace the faulty parts.
Catalytic converter issues:
A clogged or malfunctioning catalytic converter can obstruct exhaust gas flow and lead to engine stalling. Diagnose the condition of the catalytic converter and replace it if necessary.
Computer/Sensor issues:
The sensors on your car provide information to the computer, which then adjusts the fuel and air mixture to keep the car running smoothly. If a sensor is not working properly, the computer may not be able to get the right information and the car may stall.
