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Stock Problems/IssuesDiscussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Clubman (R55), Cooper and Cooper S(R56), and Cabrio (R57).
Hello community, I have a problem with my mini, it started when it suddenly stopped starting one day, this was a real headache, I checked the internal JBE fuse box thinking it was I unsoldered the internal relay, it wasn't that, I thought it was corrosion on the cables so I unpinned them and I think I left them more or less okay because later I had problems with the OBD connector and they came out Many codes that I didn't have before and all this because because I did not notice that in several connectors there were repeated colored cables, well in total it turned out to be the low pressure fuel pump, finally it managed to start, for this I took advantage and changed some other parts such as the lambda sensors, a blow off Valve forge, spark plugs dina, iridium spark plugs, air intake aem, and also changed all the filters, more with the gasoline I had a problem since when opening it has some small o rings where the hose is disconnected to uncover it, I got some small replacement o rings but I have doubts if I placed them correctly, I checked and there are no fuel leaks then I want to assume that there are no air leaks or things like that in the absence of doing a test, unfortunately even though I had finally brought the legendary mini back to life, the fuel pump I do not know if it was defective because when accelerating after 4000 rpm which is when the turbo comes in the car began to jerk and lost all power, it sent a limp mode message and a message that no all the power available, which will take to check the nearest authorized mini workshop the car, with the scanner I saw the errors it sent and they ranged from low fuel pressure, no reading of the left side fuel pump (which was also reflected in the fact that it did not mark the correct fuel level on the dashboard and a funny thing is that when I activate the air conditioning the fuel bars went down dramatically and went back up if I turned it off), clogged diverter valve which I think I already solved, misfires in multiple cylinders, rich fuel mixture and several other things, later I will post the report, the funny thing is that after erasing the codes it ran normal again for a few seconds but then again passing 4000 rpm again in limbo mode, thinking that now the problem was the high pressure fuel pump, I first sent it to be rebuilt or serviced, it should be said that my mini has 100,000 km, this did not solve the problem either so I asked for a new one to ecs tuning but to my damn surprise that did not solve anything either and I curse because it is a spare part a little expensive, anyway I was satisfied that it started and I was using the car like that for almost a year, the truth is I gave it little use but I did notice it was consuming a lot of fuel despite driving at low rpm in the city with dense traffic, a full tank didn't give me more than 300 km, anyway I put in a racing oil cooler like the one in the Rpm power kit but much bigger, which the oil hoses broke and now I'm taking the opportunity to disassemble the front of the car again to put the original radiator back on, I also changed the intercooler and the auxiliary water pump since it broke on a little adventure in the woods, in these same forums I read that it could be the lambda sensors, but according to the same explanation that is ruled out because above 4 thousand rpm the fuel map comes in due to the turbo, I also cleaned the injectors, cleaned the intake manifold with seafom, also cleaned the catalytic converter with vinegar and baking soda (which I think was silly lol) and that's it for the moment, I have not been able to do pressure tests fuel from the low pressure pump because I have not found a kit with the correct inlet or correct adapter that goes into the high pressure pump since my suspicion is this faulty low pressure pump, since I checked the fuel rail pressure by OBD and it was correct in range, then I also do not think it is the high pressure pump, please if you have any ideas or similar experience I would greatly appreciate your help, thank you. this is the second diagnostic after i move some pinouts this is the first diagnostic after i change the lpfp