Originally Posted by jp467
Its the exhaust system I believe. Mine was doing it not at idle but just above idle. It will do it at times as the idle is coming down from startup at about 900 rpm then go away as it drops below that. The reason you probably get it with the a/c on is it puts a load on the engine and slighly changes the rpm. I know what you are talking about though it like a resonating its more sound than feel and sounds loud at times.
Hmmm, I never thought of that. It always seems to be coming from the engine compartment, but maybe it just seems that way 'cause I'm assuming it to be the case. I've been thinking that perhaps another factor, too, is that I have the skid plates. They might be throwing off how the vehicle can (or cannot) absorb some frequencies?
I did ask the dealer look at it last week - when I dropped it off to finally get my defective windshield replaced (woo hoo!)
It unfortunately wasn't vibrating all that much when I took it in; just a small bit. So I knew I was doomed when I dropped it off. (It was only low 60's outside and I'm pretty much convinced that the vibration is *much* worse with it's warmer outside - like 80's or higher). The dealer said they did notice the minor vibration, but they also said they tried a couple other WK2s on the lot and claimed they had the same vibration. I got into a discussion about how bad it can really be sometimes. i.e. that there's no way it's 'normal'.
I asked to come in the next morning to try out same WK2s on the lot and they said 'sure'. But then I showed up too early; they said I'd have to wait until 9am when sales guys arrive. I had to get to work.
I did talk to the service manager about it again while I was there. He had gotten involved in the issue the prior day and is one of the ones that was trying other WK2s. He says he's not sure what the problem could even be. Said they had thought maybe engine misfire but checked for codes and there weren't any (engine misfires supposedly always are reported by codes). I'm sure it's not the engine; I think it's running fine.
Told them I'll just show up one day out of the blue within the next few weeks when it's warmer out and it's vibrating really bad so they can see exactly what I'm talking about. They were OK with that.