How to heal after issues caused by VCM

[TheGentleman]

Had issues with my Honda odyssey a few days ago, it makes me want to do some research about how to deal with engine problems caused by Honda's Variable Cylinder Management (VCM) system after disabling it. Here are the insights:
• Immediate Fixes: Replace spark plugs with high-quality ones immediately after disabling VCM.
• Fixes as Needed: Replace catalytic converters if you get a Malfunction Indicator Lamp (MIL) and error codes P0420 or P0430.
• Self-Healing Components: For the Piston rings: Just drive normally, oil consumption should improve, And the Cylinder walls: Any minor damage will heal over time.
• Check But Don't Necessarily Replace: For engine mounts: Only replace if they're physically broken, not just if the VCM-related solenoid is faulty, for the intake Boot: only check for cracks.
The most important thing is to disable VCM, replace spark plugs, and monitor other components. Some issues will resolve themselves, while others may require replacement.

 

[minivansarekewl]

cylinder deactivation seems nice on papaer but in reality its more harm than good. one question about the rings and cylinder walls, how do you think they heal over time? sure the rings might losen up if they're stuck but a damage to the wall is damage to the wall, theres no fixing that

 

[AhsokaTanoIC534]

@TheGentleman i had a similar problem with my honda last month after turning off vcm i changed the spark plugs and kept an eye on the oil it got better after a few weeks no need to replace everything just watch the parts like the mounts and boot

 

[sheis_taylor]

I'd agree with what's been said. disablingvcm and swapping out the spark plugs is a solid first step. as for the catalytic converters, keep an eye on those codes like P0420 or P0430. most things should improve with normal driving, but definitely keep an eye on any engine mounts or intake boot cracks.

 

[s@l@d_m@n]

@TheGentleman
Yep, VCM is notorious! You hit the nail on the head by disabling it and fresh plugs are the immediate must dos. Good call on just monitoring the other stuff, no need to throw money at it if it fixes itself or doesn't throw codes later