Today, we will be addressing the common intake manifold runner control system issues in a 2006 Honda CRV. This vehicle has 106,000 miles and is equipped with a 2.4-liter engine. The specific trouble codes we are dealing with are P1078 and P1077.
The intake manifold runner control system features a rotary valve that adjusts the length of the runners to optimize the engine’s performance at different RPM ranges. Common issues with this system include vacuum supply problems, solenoid failures, gummed up valves, and faulty sensors.
Here’s a step-by-step guide to diagnosing and resolving these issues:
- Check the vacuum supply hose and the solenoid for any signs of damage or leaks.
- Test the solenoid by applying 12 volts and grounding the circuit to ensure proper functioning.
- Inspect the rotary valve and sensor for any sludge buildup, cracks, or damage.
- Clean the rotary valve thoroughly to remove any sludge that may be affecting its operation.
- Verify the diaphragm’s ability to hold vacuum and check for any damage or wear.
- Reinstall the components and ensure proper alignment and functionality before securing them in place.
When working on the intake manifold, it’s essential to pay attention to the condition of the gaskets and the overall cleanliness of the components. Additionally, during reassembly, lubrication and careful alignment play critical roles in preventing damage to the system.
Using a scan tool to verify the system’s operation can provide valuable insights before completing the repair process.
By following these steps, you can effectively address intake manifold runner control system issues in your Honda CRV and restore optimal engine performance.
If you found this guide helpful in diagnosing and resolving your Honda CRV issues, feel free to share your experience in the comments below. Your feedback is valuable to us!
Thank you for reading and stay tuned for more automotive know-how from KZ guy!