P1518 Mercury Code - Intake Manifold Runner Control Stuck Open
Quick Answer
The P1518 diagnostic trouble code for Mercury vehicles indicates that the Intake Manifold Runner Control (IMRC) is stuck open. Common causes include Faulty IMRC actuator, Stuck open intake manifold runners, Wiring or electrical issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1518 Mercury indicates Intake Manifold Runner Control Stuck Open.
- Common causes
- Common causes include Faulty IMRC actuator, Stuck open intake manifold runners, Wiring or electrical issues.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1518 Mercury Description
The P1518 diagnostic trouble code for Mercury vehicles indicates that the Intake Manifold Runner Control (IMRC) is stuck open. The IMRC system is responsible for controlling the intake manifold runner length to optimize airflow and improve engine performance. When the IMRC is stuck open, it can lead to a decrease in engine performance, reduced fuel efficiency, and increased emissions. This issue can also cause rough idling, stalling, and a lack of power during acceleration.
Common Causes of P1518 Mercury
- Faulty IMRC actuator
- Stuck open intake manifold runners
- Wiring or electrical issues
- Vacuum leaks
- Carbon buildup in the intake manifold
Symptoms of P1518 Mercury
- Engine misfires
- Loss of power
- Rough idling
- Reduced fuel efficiency
- Illuminated Check Engine Light
How to Fix P1518 Mercury
- Begin by diagnosing the issue using a scan tool to confirm the P1518 code and identify the specific cause.
- Inspect the IMRC actuator and intake manifold runners for any signs of damage or obstruction.
- Check the wiring and electrical connections related to the IMRC system for any faults or loose connections.
- Clean out any carbon buildup in the intake manifold that may be causing the runners to stick open.
- Replace any faulty components, such as the IMRC actuator or intake manifold runners if necessary.
Cost to Fix P1518 Mercury
The cost to repair a P1518 code on a Mercury vehicle can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the repair costs can range from $200 to $500, including parts and labor. It's important to note that additional diagnosis time and labor rates may apply, so it's best to consult with a qualified mechanic or auto repair shop for a more accurate estimate.
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