P1518 1999 Ford F150 Code - Intake Manifold Runner Control Stuck Open
Quick Answer
The Intake Manifold Runner Control (IMRC) is an electrically actuated system consisting of a motorized actuator with an attaching linkage for each housing on each bank. Common causes include Faulty Intake Manifold Runner Control (IMRC) actuator, Intake Manifold Runner Control actuator harness is open or shorted, Intake Manifold Runner Control actuator circuit poor electrical connection. 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 1999 Ford F150 indicates Intake Manifold Runner Control Stuck Open.
- Common causes
- Common causes include Faulty Intake Manifold Runner Control (IMRC) actuator, Intake Manifold Runner Control actuator harness is open or shorted, Intake Manifold Runner Control actuator circuit poor electrical connection.
- 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.
Code P1518 1999 Ford F150 Description
What are the Possible Causes of the DTC P1518 1999 Ford F150?
- Faulty Intake Manifold Runner Control (IMRC) actuator
- Intake Manifold Runner Control actuator harness is open or shorted
- Intake Manifold Runner Control actuator circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1518 1999 Ford F150?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1518 1999 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1518 1999 Ford F150 Code
1. What does the P1518 code mean on a 1999 Ford F150?
The P1518 code indicates that the Intake Manifold Runner Control (IMRC) is stuck in the open position, which can affect engine performance.
2. What are the symptoms of code P1518 in a 1999 Ford F150?
Common symptoms include poor acceleration, reduced fuel efficiency, rough idling, engine hesitation, and occasionally a check engine light.
3. What causes the P1518 code to appear on a Ford F150?
Possible causes include a malfunctioning IMRC actuator, broken or disconnected control linkage, carbon buildup in the intake manifold, or electrical issues like damaged wiring or a faulty sensor.
4. Can I drive my 1999 Ford F150 with a P1518 code?
While the truck may still be drivable, continued operation with this code can result in reduced performance and fuel economy. It's best to address the issue promptly.
5. How do I fix the P1518 code on a 1999 Ford F150?
Repairs may include cleaning or replacing the IMRC actuator, repairing or replacing damaged wiring, cleaning carbon deposits in the intake manifold, or replacing the IMRC linkage if broken.
6. How can I diagnose the P1518 code on my Ford F150?
Start by inspecting the IMRC actuator, linkages, and wiring for visible damage or disconnection. Use a scan tool to monitor IMRC operation and perform a physical test of the actuator’s movement.
7. What is the function of the Intake Manifold Runner Control (IMRC)?
The IMRC system optimizes airflow to the engine by opening and closing intake manifold runners, improving power and efficiency at different RPMs.
8. How much does it cost to repair the P1518 code on a 1999 Ford F150?
Repair costs vary depending on the issue. Cleaning the intake manifold may cost $100-$300, while replacing an IMRC actuator can cost $200-$600, including labor.
9. Can a dirty intake manifold cause the P1518 code?
Yes, carbon buildup in the intake manifold can cause the IMRC to stick in the open position, triggering the P1518 code.
10. What tools are needed to fix the P1518 code on a 1999 Ford F150?
You may need a scan tool, basic hand tools, a multimeter for electrical testing, and possibly cleaning supplies for removing carbon buildup.
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