So I was out last night and my car started acting up. The first thing I noticed was that the car was shaking noticeably when it was idling at 650 RPM, but that seems to have disappeared. Since then trying to accelerate at low engine speed (~1500-2200 RPM) causes a fairly violent shuddering. A bit higher and it actually becomes a periodic shudder, it'll be fine for a second then shudder for a second. As the engine speed increases it feels more like a brief, intermittent, slip or miss (2500-3000 RPM) and at high RPM it seems fine. As an example, going 55 mph in 6th and stepping on the gas it shudders like crazy, dropping into 3rd and and stepping on the gas and it flies without issue. Seems to rev up normally in neutral or with the clutch disengaged.
My first thought while it was shaking at idle was that it felt like when the harmonic balancer went in my Camaro, but that was a long time ago and I don't really remember exactly how that behaved. Anyone had that problem in their Legend? I don't know what a broken motor mount would feel like, but I suspect it could be similar as well.
When the shuddering started I immediately though about axles, but it seems to be an engine speed thing. I haven't noticed and grinding noises or anything, and I'm not noticing any disparity between engine speed and car speed that would indicate slipping in the drivetrain.
About the only other thing out of the ordinary is that my idle seems slightly low (went down to just over 600, 700-750 is normal for me), and maybe a bit rougher than usual (it could just be that I'm listening more closely than usual).
Besides playing around on the drive I haven't done any checking yet. It's bloody cold outside and the garage space I usually work in is currently occupied. If anyone's had any similar symptoms, suggestions for what to check, or general questions, fire away. I've given a few of my thoughts, but I haven't actually ruled anything out.
My first thought while it was shaking at idle was that it felt like when the harmonic balancer went in my Camaro, but that was a long time ago and I don't really remember exactly how that behaved. Anyone had that problem in their Legend? I don't know what a broken motor mount would feel like, but I suspect it could be similar as well.
When the shuddering started I immediately though about axles, but it seems to be an engine speed thing. I haven't noticed and grinding noises or anything, and I'm not noticing any disparity between engine speed and car speed that would indicate slipping in the drivetrain.
About the only other thing out of the ordinary is that my idle seems slightly low (went down to just over 600, 700-750 is normal for me), and maybe a bit rougher than usual (it could just be that I'm listening more closely than usual).
Besides playing around on the drive I haven't done any checking yet. It's bloody cold outside and the garage space I usually work in is currently occupied. If anyone's had any similar symptoms, suggestions for what to check, or general questions, fire away. I've given a few of my thoughts, but I haven't actually ruled anything out.