P1518moderate severityPowertrain
Intake Manifold Runner Control Stuck Closed
on 2002 Ford Thunderbird 5.0L V8 · FWD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1