Why are my butterfly valve plates Breaking on my IMRC?
Why are my butterfly valve plates Breaking on my IMRC?
Butterfly valve plates that bind slightly may put an additional strain on the motorized IMRC actuator linkages, possibly contributing to the broken linkage clips you’ve described. The extra strain of binding plates may prove too much for the motorized IMRC actuator and it may give up the ghost.
How to test the IMRC module in a car?
You can test the IMRC actuator by manually operating the throttle (engine running) and then watch the actuator. I open the throttle like on hard acceleration and then let off. Let me know if the rods are attached to the actuator and the shaft in the manifold.
Where are the intake air passages on an IMRC?
The linkage attaches to the housing butterfly plate levers. Each IMRC housing is an aluminum casting with two intake air passages for each cylinder. One passage is always open and the other is opened and closed with a butterfly valve plate.
Can a jumper wire be added to an IMRC?
If any retaining clips have broken, you may wish to order a few extra, as they can be easily damaged during installation. The IMRC actuator also can be controlled by adding jumper wires to the proper terminals. The IMRC actuator has a four-wire connector.
Butterfly valve plates that bind slightly may put an additional strain on the motorized IMRC actuator linkages, possibly contributing to the broken linkage clips you’ve described. The extra strain of binding plates may prove too much for the motorized IMRC actuator and it may give up the ghost.
How is the IMRC of an intake manifold controlled?
The IMRC actuator also can be controlled by adding jumper wires to the proper terminals. The IMRC actuator has a four-wire connector. The black wire is ground; the red/yellow wire is 12 volts from the battery junction box (controlled by the PCM power relay); the brown wire supplies the IMRC actuator on/off command from the PCM.
If any retaining clips have broken, you may wish to order a few extra, as they can be easily damaged during installation. The IMRC actuator also can be controlled by adding jumper wires to the proper terminals. The IMRC actuator has a four-wire connector.
What does the Orange Wire on the IMRC mean?
The orange/white wire is the feedback from the IMRC actuator to the PCM, indicating the actual position of the actuator output shaft. If you’re using a smoke machine to look for vacuum leaks in the intake manifold area, you may notice a small amount of smoke escaping around the IMRC shafts. Ford says slight leakage here is normal and expected.
Is there a way to control the IMRC?
The IMRC actuator can be controlled by a scan tool with the proper software. Command the plates open and closed while observing the IMRC actuator. Does it move? If not, disconnect the linkages, then try controlling the IMRC actuator. If it still doesn’t move, the problem probably lies in the actuator itself.
Can a worn IMRC seal improve fuel mileage?
Improvements in fuel trim numbers are claimed, but your mileage may vary, as the saying goes. If you’re dealing with an intake manifold with worn IMRC shaft seals, a more expensive alternative is the replacement of the intake manifold. The new manifold includes new seals.
