R50/53 YO YO
6th Gear
Joined: Sep 2002
Posts: 1,649
Likes: 0
From: 14605
... contrary to popular opinion, it is not the desire or tendacy to transport a famous asian string player ...
... it is the start-stop-start-stop hesitation-like feeling that leaves you rocking back-and-forth in your seat.
... as if you were at the end of a string!
... it is the start-stop-start-stop hesitation-like feeling that leaves you rocking back-and-forth in your seat.
... as if you were at the end of a string!
4th Gear
Joined: Apr 2003
Posts: 545
Likes: 0
From: California S.F. East Bay
I'm not sure if this is what's being talked about, but I've got an MCS with the 6-speed, and what I've noticed is that there seems to be quite a bit of lash in the drive train. The transition from gas-on to gas-off it not tight. You don't just feel the addition or removal of power, you also feel the lash, or slack in the drive train, which produces a fairly abrupt jerk.
So if you have to get off and gas, and then back on it quickly, you end up getting jerked back and forth. This can produce a yo-yo effect, when your foot is pushed onto or off of the accelerator by the jerking. It kind of feeds on itself, and you have to have a light foot to avoid it.
So if you have to get off and gas, and then back on it quickly, you end up getting jerked back and forth. This can produce a yo-yo effect, when your foot is pushed onto or off of the accelerator by the jerking. It kind of feeds on itself, and you have to have a light foot to avoid it.
2nd Gear
Joined: May 2003
Posts: 147
Likes: 0
From: Ft.Lauderdale
YOYO - Technical term "step acceleration" - an instability of RPM at the transition point between 1/2 throttle and WOT (wide open throttle) - in the MCS this occurs at 2800 to 4000 rpm with about 1/2 throttle. This causes the passengers to rock fore and aft a little when it happens. Only happens while rpm is increasing and when the engine is torque loaded - the effect is accentuated by going up hill (torque load) . Floor it or baby it and it won't happen.
In 2nd gear at 2800 -3000 RPM ease the throttle down (increase torque loading)and the car yoyos up to 4000 rpm - repeat for the next 4 gears and you have it as bad as me.
I get it in every gear except 1st.
Hope this helps.
I posted the above text in another of the myriad of threads about what BMW would have us believe are software problems. Those being yoyo, stumble/hiccup, and bog.
The search function in yellow on the right side of the screen helps a lot when looking for specific terms.
In 2nd gear at 2800 -3000 RPM ease the throttle down (increase torque loading)and the car yoyos up to 4000 rpm - repeat for the next 4 gears and you have it as bad as me.
I get it in every gear except 1st.
Hope this helps.
I posted the above text in another of the myriad of threads about what BMW would have us believe are software problems. Those being yoyo, stumble/hiccup, and bog.
The search function in yellow on the right side of the screen helps a lot when looking for specific terms.