How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Eric Your Own Question
Eric, Automotive Repair Shop Manager
Category: BMW
Satisfied Customers: 32374
Experience:  20+ yrs. experience as repair shop manager and technician.
Type Your BMW Question Here...
Eric is online now
A new question is answered every 9 seconds

Vehicle: 2007 mini n12 engine car came in with "death

Customer Question

Hello Roger
vehicle: 2007 mini cooper n12 engine
car came in with "death rattle"
we replaced the timing chain, guides & tensioner, changed oil & filter.
car ran fine, customer had car for 2 days, came back with "check engine" light on.
dtc: 2870 2891 287D
we found the vanos solenoid valves partly blocked with what appears to be oil filter element fibres,
we cleaned them & re-installed, road test produced the same dtcs.
swapped solenoids (int/exh), road test again, same dtcs.
swapped cam sensors, same result.
we ran car with crankcase cleaner additive & changed oil & filter again.
longer road test, same result.
we replaced the intake vanos sprocket, same result.
engine oil pressure is 32psi hot idle, 45psi hot 3000rpm.
any ideas?
Submitted: 2 years ago.
Category: BMW
Expert:  Eric replied 2 years ago.


I am sorry that you have not been helped yet. The expert you requested has not been online today so if you want help from a different expert, let me know.

I will just need the 17 digit VIN code to pull up schematics, etc

If you prefer to wait for Roger, let me know and I will opt out so he can answer

Customer: replied 1 year ago.
vin# WMWMF33537TT52729
Expert:  Eric replied 1 year ago.


Are you down to just the codes but no actual driveability symptoms? Has ecu been checked for latest software updates

Customer: replied 1 year ago.
The car did have performance problem as well as the codes, we found the problem to be debris in the oil passages causing erratic cam timing control, we did 2 crankcase flush/oil & filtrer changes & blew out some of the passages through the oil pressure switch opening while the filter was removed.
The car seems to run normally & does not set any codes during*****tests.
Expert:  Eric replied 1 year ago.


Ok, it sounds like you have it handled. If the codes return, let me know