This is taken right after oil change, before oil change it was more rough. the symptom is that when i step on the brake on red light and fully stopped the car, the whole car body shakes wid rpm going down to 500. I went to ask dealership yesterday without appointment. they suspect that it might be throttle problem but not sure about it. please help me out guys.
https://www.youtube.com/watch?v=kklS...e_gdata_player

 

May be something with the transmission?

 

you mean it needs transmission fluid?

 

I am going to lean on check the mounts to see if they are wore out. What year is it again.

 

it's 07 mini cooper non-s model. automatic transmission and hits 71k.

 

Might be the mounts but, it could also be a bunch of other things too.

 

any more suggestions?

 

i just visited local mini specialist for asking my problem. He said it might be that i didnt use premium gas. Of course, i didnt use premium since i moved to california from new jersey because the gas price in cali is too high..,anyway the question is.. does it really make difference? does it really relate to idle?

 

Yes if the manual says premium,then use it. There must be a reason, as I believe yor engine Has High Compression. Also would throw a can of Seafoam in gas tank to help clean internals. Shoul run better after new at least 91 octane.

 

is it okay to put chevron fuel system cleaner instead?

 

Do you have any mods? I had NM Engineering Engine Torque Arm Mount Insert and it would intermittently cause a vibration at idle. I removed it and the idle vibration has not come back (5k miles since removal).

 

nope, no mods and nothing aftermarket

 

damn....what the hell is the problem...

 

mounts definitely sounds like your issue.

 

A rough idle could be caused by bad/fouled spark plugs. I believe the change interval for plugs is 100k miles on the justa, but 70k is a lot of miles and its possible they are done now, especially if lower octane fuel has been used. Might be worth changing them out as they will be due soon anyway. Good luck!