Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

Problem with my 3.0sd

Discuss anything to do with the (E83) BMW X3 here
(Older F25 discussion within will ideally to be moved to F25 Sub section below)
Post Reply
jagr
Member
Member
Posts: 393
Joined: Sun Sep 29, 2013 4:08 am
Location: Cheshire

Problem with my 3.0sd

Post by jagr » Mon May 21, 2018 10:58 pm

Hi All,

I have developed a problem with my X3.
A few weeks ago while driving at around 55-60mph I went to overtake and the car just felt flat and failed to accelerate. I presumed the MAP sensor and running Carly seemed to agree.
I first tried cleaning with electrical contact cleaner and it seemed better so bought a new one last week. A couple of days later it happened again so checked vac pipes which all seemed ok (I did replace them with silicon a couple of years ago). Again diverter valves were changed for the newer model early last year for preventative maintenance.

Tonight it happened again and this is the freeze frame from Carly for the error:

*** 3F01:Boost pressure sensor signal ***
Fault-Set 1 - ( 101984 km)

    Air mass per cylinder: 283.57 mg/Hub
    ambient pressure: 994.46 mbar
    battery voltage: 14.01 V
    Boost pressure actual value: 364.31 mbar
    Coolant temperature: 92.29 deg C
    Engine speed: 1489.45 1/min
    Injection quantity: 7.88 mg/Hub
    Rail Pressure Is: 346.58 bar
    vehicle speed: 50.34 km/h
    Voltage boost pressure sensor: 21.65 mV

Fault-Set 2 - ( 101984 km)

    Air mass per cylinder: 460.01 mg/Hub
    ambient pressure: 994.46 mbar
    battery voltage: 14.01 V
    Boost pressure actual value: 393.85 mbar
    Coolant temperature: 89.28 deg C
    Engine speed: 1323.96 1/min
    Injection quantity: 18.12 mg/Hub
    Rail Pressure Is: 425.35 bar
    vehicle speed: 32.57 km/h
    Voltage boost pressure sensor: 21.65 mV

Any ideas?

Cheers
2011 BMW X3 30d M Sport

User avatar
marti
Member
Member
Posts: 770
Joined: Tue Jan 19, 2016 11:33 am
Location: Norfolk

Re: Problem with my 3.0sd

Post by marti » Thu May 24, 2018 8:42 pm

You've answered your own question....new MAP sensor required or you have a vacuum leak

Evokid007
Newbie
Newbie
Posts: 5
Joined: Thu May 31, 2018 1:31 pm

Re: Problem with my 3.0sd

Post by Evokid007 » Thu May 31, 2018 1:59 pm

Mine had a similar issue and I replaced Air flow meter . Can’t remember fault codes off hand though.

Post Reply