HELP! My 02 mini cooper going very poorly - MINI Cooper Forum

kmk84 · #1 (**permalink**) Nov 5th, 2012, 05:12 PM

My girlfriends 2002 mini cooper 1.6 was going perfect until it cut out on motorway, managed to get it back to mechanic but ran very badly. Mechanic has had it over 2 weeks and cant get it to go. He disconnected and blew out fuel lines with airline and said that they were very dirty, almost like black engine oil came out of them. Note there was never diesel put in tank accidentally or anything like that. He cleaned them and flushed out. Filled tank with fresh petrol and still no better. He then fitted new spark plugs and a replacement used coil pack but still nothing. He done a diagnostic check but reads no faults. Also he has put 2 injector cleaners through it. The car will start perfect each day he goes over to it and it will run perfect for sometimes 20mins and sometimes close to an hour then it will change dramatically as if only running on one cylinder and wont rev and when turned off will not start again? The mechanic is baffled to what is causing it. Any help or suggestions would be much appreciated..

Macguyvic · #2 (**permalink**) Nov 5th, 2012, 09:54 PM

Possibly a high pressure fuel pump acting up intermittently...

kmk84 · #3 (**permalink**) Nov 6th, 2012, 10:02 AM

Thanks for the reply, i will mention it to mechanic and see what happens from there. Any more ideas or suggestions would be appreciated.. It is getting very frustrating that the car still not fixed.. Thanks in advance..

The Nun · #4 (**permalink**) Nov 6th, 2012, 12:57 PM

Could be something breaking down with the heat, coils are favourite for this, but you say they have swopped it already? albeit a used one, was that good?

kmk84 · #5 (**permalink**) Nov 6th, 2012, 01:08 PM

yes coil pack was replaced with one from the scrapyard still no better! im baffled

The Nun · #6 (**permalink**) Nov 6th, 2012, 01:12 PM

Quote: Originally Posted by kmk84 (original)

yes coil pack was replaced with one from the scrapyard still no better! im baffled

Ah but that could be the very reason the car was scrapped?

kmk84 · #7 (**permalink**) Nov 7th, 2012, 10:14 AM

Yes you could be correct there, but as far as im aware the car was damaged, but I will double check that again before I rule that out, thanks again

kmk84 · #8 (**permalink**) Nov 7th, 2012, 02:14 PM

Just found out coil pack fitted to car was brand new so that rules that out. A BMW/MINI specialist guy had a look and believes it to be the ECU?? Does this sound like a possible fix?

The Nun · #9 (**permalink**) Nov 7th, 2012, 03:25 PM

Could be but a new ECU would be very expensive.

kmk84 · #10 (**permalink**) Nov 7th, 2012, 06:27 PM

Also throttle body was changed today (out of breakers) but still no better. And as far as im aware the throttle body also contains the AFM and a few sensors? Any way of testing ECU or any other possibilities of the fault??