Join Date: Jan 2005
Location: Middletown, PA
Feedback Score: 0 reviews
VCM resonance issues - what's normal?
Not sure if this is normal for low temperatures, but my Pilot has started to exhibit some strange resonance issues from time to time at certain RPMs. I'm certain it's the VCM system doing its thing, but I've never noticed it until just recently (and that seems to coincide with some pretty low temps, between 19-23 degrees Farenheit).
Basically, the problem becomes evident at very low throttle conditions at a variety of different speeds. It's a low "thrumming" noise, coupled with a rumbling sensation (kind of like the feeling of a cell phone on vibrate). It's pretty subtle, but annoying.
Last night, I was driving home in a 25mph zone, doing exactly 25 with very light throttle application. It did not seem to always coincide with the Eco light appearing (which I thought was indicative of the VCM system being engaged, but now I'm not so sure). Apply a bit of throttle and the sensation goes away instantly - the transmission doesn't even need to downshift.
Once I got out of the zone and was doing 40-45mph, I didn't notice it at all. But later, after getting on the highway and being in cruise at 70MPH, the noise returned intermittently with different degrees of severity.
My vehicle is due for inspection, so we'll be visiting the dealer soon. If past experience with them is any indicator, I'm sure they'll be dismissive of it, but I do think that something isn't quite right. Not sure if it's a motor mount or an exhaust hanger (which I've read a bit about related to the Odyssey and VCM). The vehicle has about 7700 miles on it and it's been through its first oil change already. Oil level seems good (right between the high and low indicators) and the only other change I've noticed recently is a 1-2MPG loss in mileage, but I've chalked that up to the lower temps and the vehicle taking longer to get to efficient operating temps.
Would love to hear your thoughts.
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