My car shakes when I let off the throttle at very low speeds only when it is cold, is this normal? It has always done this a little, but it has become a little more noticable lately. The shake is a vibration that comes through the transmission, I think.

 

I've been noticing the same problem actually ...

 

moving to UTH....you might get a better response in there....

 

Is this possibly the "clutch deceleration buzz"?

 

No. When I let off the throttle around 1200 or so it goes down to about 700 and shakes then returns to 1000.

 

Perhaps the cold weather makes your bushings/mounts harder and you notice it more than usual?

 

is this when the car is idling higher, 2krpm , to warm up the engine faster?

sometimes i notice the idle drop but this is when i coast on the car to the point where it would be idling but still in gear, then when i press on the clutch it drops and shudders and goes to idle.

 

Check this out:
https://www.s2ki.com/forums/index.php?showtopic=269436

 

It's a common idling problem. Mine does this too. If I'm at a light, and blip the throttle maybe 500 rpms, when they fall back down the car will go even LOWER than idle and almost stall for a 1/2 second. It's very common with our car. I've heard spraying carbuerator cleaner into the throttle body while the car is on can help this. Other than that, it's just a part of owning the s2000.

haha slows... I've never seen that thread from xvip. Must have made it before I joined the forum. To s2kDC: Read #4.

 

I've also notice this changed after the weather got cold