Intake Manifold Runner Control Stuck Closed
2000-2006 Lincoln LS 3.0L V6
Description
The Intake Manifold Runner Control (IMRC) is stuck in the closed position. The IMRC system varies the intake manifold runner length or opening to optimize airflow at different RPMs.
Symptoms
- Check Engine Light
- Reduced high-RPM power
- Poor acceleration above 3000 RPM
- Engine feels sluggish at high speed
Common Causes
- Stuck IMRC actuator
- Broken IMRC linkage
- Carbon buildup on IMRC plates
- Faulty IMRC solenoid
- Vacuum hose leak to IMRC actuator
Diagnostic Steps
- Inspect IMRC actuator for free movement
- Check IMRC linkage for breakage
- Inspect vacuum supply to IMRC actuator
- Clean IMRC plates if carboned up
- Test IMRC solenoid
Repair Notes
Free or replace stuck IMRC actuator. Repair broken linkage. Clean carbon from plates.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1518 on Other Vehicles
Lincoln Aviator
2003-2005 4.6L V8
Lincoln Aviator
2003-2005 4.6L V8 DOHC
Lincoln Aviator
2020-2024 3.0L Twin-Turbo V6
Lincoln Aviator
2020-2024 3.0L V6 Twin Turbo
Lincoln Aviator Grand Touring
2020-2024 3.0L Twin Turbo V6 PHEV
Lincoln Aviator Grand Touring
2020-2024 3.0L Twin-Turbo V6 Hybrid
Lincoln Aviator Grand Touring
2020-2024 3.0L V6 Twin Turbo Hybrid
Lincoln Blackwood
2002-2002 5.4L V8
Common Questions
What does code P1518 mean on a 2000-2006 Lincoln LS?
P1518 stands for "Intake Manifold Runner Control Stuck Closed". The Intake Manifold Runner Control (IMRC) is stuck in the closed position. The IMRC system varies the intake manifold runner length or opening to optimize airflow at different RPMs.
What are the symptoms of P1518 on a Lincoln LS?
Common symptoms of P1518 include: Check Engine Light, Reduced high-RPM power, Poor acceleration above 3000 RPM, Engine feels sluggish at high speed.
What causes P1518 on a 2000-2006 Lincoln LS?
Common causes of P1518 include: Stuck IMRC actuator, Broken IMRC linkage, Carbon buildup on IMRC plates, Faulty IMRC solenoid, Vacuum hose leak to IMRC actuator.