Ok day 3 of both cam sensors changed and both o2 sensors changed and she’s purring like a TIGER! Damm this baby moves out!
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So update no walnut blasting because it’s base model just the the two VVT solenoids changed and everything else checks out pickup is tomorrow and see how everything turns out~~
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Me 2 and she’s happy!
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I’m having a recurring 2B5C (P115C) code.
Trying to sort out between MAF sensor,
throttle body, vacuum leak, or carbon on
valves (44 K miles) at the moment.
No other codes. Only threw a CEL
(P115C) once, but the pending 2B5C
comes up more and more often when
I scan for pending codes.
Runs great, steady idle, and better than
usual mpg, (although there may be other
reasons for that last item).-
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It’s a sleeper R56 base hatchback ~~
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Woo Hoo!! Bingo! Changed out vacuum pump today and yep it was turning rather not freely and even the round gasket showed some crushing (see photo) and corrosion so I think it was definitely giving false vanos timing faults and engine lights! Once replaced checked and cleared all and ran vanos adaptation and she screams for driving now and no idle issues hopefully (knock on wood) I can relax for awhile now! But hey you know it’s a mini!
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Fuel Filter Changed and Oil Changed and new oil plug!
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Will first try a new MAF sensor, then a new
TB, then pull the intake manifold off and
get the borescope out to look at the intake
valves**, then maybe get an inexpensive smoke
machine to see if there’s an occult leak or crack
that has escaped my notice so far*.
Hopefully it will get sorted out well before
I get very far down that list.
Other suggestions are welcome.
*have already replaced the cracked plastic hose
from the filter box to the turbo intake as well
as the noisemaker delete and the resonator
delete and BSH pvc hose plug and OCC and
new oem diverter valve and all those hoses and
connections are good)
**has had oil changes every 5K forever and
seafoam treatment through the vacuum hose to
the intake manifold before each of the last 3
oil changes, and OCC last 15K so intake valves
probably aren’t too bad.-
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If you have been doing the seafoam treatment then your valves may not be too bad. The long hard plastic tube that goes from the intake to the turbo get cracks from age maybe check that also.
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Metalman Well-Known MemberLifetime Supporter
- Sep 29, 2009
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- Ex-Owner (Retired) of a custom metal fab company.
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By chance, do you have one of those so called "performance" air filters that gets re-oiled after a filter washing?
Over saturating the air filter with the oil can cause issues with the proper operation of the mass airflow sensor...-
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Here we go! So VVT both changed and running great for two days and all of a sudden check engine light again! Weird thing it’s running good and idling good? Hmm so I pulled 3 codes in history but no new code will check with shop! Oh and also the Chevron Techron as suggested ~~
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So very interesting article and I’m gonna try it!!
https://us.autologic.com/news/mini-cooper-vanos-timing-faults-caused-by-vacuum-pump-
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