- Clogged fuel filter: A clogged fuel filter can restrict fuel flow to the engine, causing the engine to sputter and stall.
- Spark plug issues: Worn-out or fouled spark plugs can cause the engine to run rough and misfire. This can lead to sputtering and stalling, as well as erratic RPM fluctuations.
- Idle air control (IAC) valve problems: The IAC valve regulates the amount of air that enters the engine at idle. A faulty IAC valve can disrupt idle stability, causing the engine to sputter and stall.
- Dirty throttle body: A dirty throttle body can restrict airflow into the engine, leading to sputtering and stalling.
- Vacuum leaks: Vacuum leaks can disrupt proper fuel and air mixing, causing the engine to run poorly and stall.
- Weak battery: A weak battery can cause electrical issues, including inconsistent power supply to the ignition system, leading to sputtering and stalling.
Diagnosis and repair:
To diagnose the precise cause of the sputtering and stalling issue in a 1994 Ford Tempo, it's recommended to have a professional mechanic inspect the vehicle. The mechanic will use diagnostic equipment and inspect relevant components, such as the fuel filter, spark plugs, IAC valve, throttle body, and potential vacuum leaks. Based on their findings, they can then recommend appropriate repairs or replacements to restore the engine to proper working condition.
