Hi I just recently bought a 2005 mini cooper S with 20k on the clock. All if fine other than an idling issue that seems to be happening all the time after I have been driving the car. Its hard to explain but when i stop at traffic lights it seems to hesitate as if it is being starved of fuel and sound like it wants to stall, it seems to be worse in hotter whether. I was wondering if anyone else has had this issue and if they know of a fix for it many thanks.
[quote=dethbrd;3964282]my stock 04 s does the exact same thing. no fix yet. it has 92k miles. it was doing it when i bought it. i have changed the plugs, wires, and the corroded coil so far with no results.[/QUOTE
It's hard to tell over the bet but few things to check on a stock car no mods are
Check all your vacuum lines to you fuel pressure regulator and map sensors and your PVC pipes back to the SC
Clean out your intercooler and make shore the boots are fitted correctly.
Remove and lean your TMAP sensor to
Has the fuel filter been replaced if not it's always worth it.
Fuels pressure regulators can cause problems to.
Get your fuel pressure checked to.
The minis in hot weather do suffer from heat soak in hot wether which causes rough idle. if my one gets hot if I am sitting in traffic it gets a bit lumpy I just blip the throttle and it's ok for a little while.
You could also try a reset in the ECM it may have learnt some bad habits.
To do this just disconnect the battery neg first then poss leave it for 20 30 min the reconnect pies first the neg.
It also might get worth putting some good fuel system cleaner in
Thanks Marque i have been thinking about getting a bmw diagnostics kit for a while now is dis pretty straight forward to use, I have used obd2 software on previous cars in the past and I found it relatively easy to use. Also have you ever used the SSS program for changing setting on the car mine has autolocks on which i wish to turn of but was just wondering how easy that is to use as well.
I am not very good with sss progman I normally use ncs for dummies it's easier to use for things like that.
There lots of write ups over the bm forums to help out
I normally only use sss if I have a BCU or IKE to change.
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