E46 325 E46 2002 325ti MAF/Cat errors - Clean / replace or something else
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  1. #1
    BFI Senior
    mrwhite's Avatar
    Join Date
    Apr 2012
    Location
    United Kingdom
    Posts
    247
    Car Specs:
    Year
    2002
    Model
    E46 325ti SE +Sportpack Compact Auto
    Engine
    325
    Fuel
    Petrol
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    E46 2002 325ti MAF/Cat errors - Clean / replace or something else

    Have driven just over 300 miles this week mainly urban with a few longer motor way runs and felt the car was less responsive than normal at lower speeds but no other real indicators such as judder or stalls etc

    having also just had the coolant expansion tank replaced following an intermittent leak that was identified as a hairline crack im hoping not to have to shell out for any other major work this month.

    any how, decided to run a scan today and the following codes were showing,
    not as current, but as have happened and still there.

    Ive cleared them and been for short drive and scanned again nothing showing up.

    Shall i try just cleaning the MAF and see how it does or is there something else im possibly missing



  2. #2
    BFI Noob
    Assimilator1's Avatar
    Join Date
    Apr 2012
    Location
    UK, Surrey, Guildford
    Posts
    24
    Car Specs:
    Year
    11-2001
    Model
    e46
    Engine
    2.9d 330d
    Fuel
    Diesel
    Thanks
    3
    Thanked 10 Times in 4 Posts


    Yea try cleaning it & see if things improve, would be worth doing a before & after MAF readings too to see if it goes up.
    Check at idle, 2500 RPM & giving a full burst of throttle to ~5500 RPM

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