Hi everyone,

I've recently noticed that my Mini pulls/accelerates harder when the gas pedal is not floored (just slightly off the floor). I thought the '07 MCS was supposed overboost slightly when the pedal is all the way down. I can feel it while accelerating up to the posted speed limit, or passing someone.

This happens with the sport button on or off. Is this normal? Is anyone else experiencing this?

Thanks,
Jinxy

 

Come on you guys.

Am I the only one that floors my Mini???

 

I just floored mine this evening and didn't recognize any hesitation. However I've never done a comparison in flooring it opposed to accelerating with the pedal just a bit off the floor. Also I have a MCSa.

 

yes, I have noticed it. mine does the same. seems to be something new.

 

It is th electroninc controled gas pedal. On board Computer calculate how deep your gas pedal is and gives the same amount of gas no matter how hard you floor it or half way pressed. At least that I felt too on other type of cars that have electronic control gas padel.

I get the same feeling when I drive my friend's R56. and BMW E60 530I.
I hope this help. Try it in different gas pedal position you will get the same accelerate feel.

Cheers

Big Allen

 

agreed.. I sometimes notice as well when hitting the gas almost to the floor it's as if it was 100% throttle..

on a side note 'bigallen' nice s/n... my name's allen as well..and i got the nickname a few years back as 'bigal'

 

bigallen - It doesn't matter how I position my foot on the pedal. I get the same result. I depress the pedal all the way down until it can't go any further. As soon as I slightly lift the pedal off the floor, there is a slight surge in power. Enough that I can feel a difference.

Again, I thought the computer is configured to slightly overboost the turbo when floored.

Thanks - Jinxy

 

Ok I floored it twice today .Once damp pavement going 25 mph floored it ,the wheels spun alot but did'nt hesitate .2nd time from about 20 mph dry pavement floored it ,it just went real fast no lag . Both of these were long strait freeway onramps no traffic . On the second one my 3 year old said I was scaring him . End of experament .

 

 

could be a bad throttle position sensor at the pedal, if it's analog output, you can unplug the connector & use your multimeter to look for a consistent change in resistance (or just take it to the dealership).
I have an old analog swept needle multimeter that makes testing much simpler (of course a real shop manual would be even better).

 

I think my car is doing this now. I took it out for a nice 10 mile run to a friends house this evening and I noticed a distinct lack of power, especially at 4000rpm and up, like there was a restriction on the intake. Harder pressure on the gas seemed to make it worse, and there was a bit of stuttering hesitation. It feels nothing like it did at around break-in time, insane free-wheeling, wild-abandon acceleration, kinda the reason why we got these cars in the first place. I'm feeling a bit blue about the whole experience now. I guess it has to go back in.
(sigh)

 

Has it been a gradual decrease in performance, or a change you've noticed ?
as I've posted before, most gas stations sell an oxygenated "winter blend", more ethanol/alcohol, during this time of year to reduce emission levels and performance goes to crap with it.
I believe it's law that they post the ethanol/alcohol blend% on the pumps, so finding a top-tier gas station that's not blending and filling up with some premium would be a great first step.

I can't imagine the cat being restricted on such a new car, but the combination or rich mixtures and high heats of turbocharged cars can prematurely plug it up/cook it. Additional factors like a faulty coolant temp sensor, misfires, frequent short drives, etc.. could also lead to a premature failure.

It's all speculation without plugging into the ecm, so it would be wise to schedule a visit to your dealer. If you're really curious about what's happening inside your engine you can pull the plugs, but don't expect to be able to 'read' them like the old traditional coppers.

& Make sure you post back with your findings

 

Why??

 

i had the same problem and MINI Germany says the O2 sensor needs to be replaced...will see what happens next week

 

My MINI only hesisates moving forward in first or second if I floor it. note I said moving forward because the tires are spinning

 

Mine probably isn't related because I don't have an S. I just have a plain ole Coop, but I have a similar experience. When I stomp the throttle all the way down there is some hesitation before the car does anything. However, if you just smoothly move the throttle all the way, the car is quicker to respond. Weird, but I guess with an electronic throttle it makes some sense.