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Thread: bmw 325i won't rev over 3500rpm

  1. #1
    Join Date
    Jan 2019
    Location
    Finland
    Posts
    2
    My Cars
    2000 BMW e46 325i

    bmw 325i won't rev over 3500rpm

    hey! does anyone know what can be the problem? Car is m54b25 e46 2000 year. Changes what we have done with stock ecu is that we deleted dsc abs softwares and changed fuel map, and they should be alright. it sounds like rev limiter and it is stuck at 3500rpm like "limp mode", car doesn't give any codes exept tacho signal unplausible at 3100-3200rpm. my guess is that it can be crankshaft sensor if it is loose but then the sound would be random cutting? and i'm using inpa. https://www.youtube.com/watch?v=S5BqQw9HuKc here is link how the car is acting. sometimes it works perfectly.

  2. #2
    Join Date
    Jul 2004
    Location
    Houston, TX
    Posts
    12,459
    My Cars
    36 Cylinders
    Is the ABS/DSC completely removed from car?
    Does the car know vehicle speed?
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  3. #3
    Join Date
    Jun 2002
    Location
    Aberdeen, NC (yes, again)
    Posts
    23,672
    My Cars
    E39M5, E500 4WD
    Can't imagine why anyone would delete ABS. How is the engine computer getting the vehicle speed?

    Personally, I'd say it's time to undo whatever ABS delete you did in the DME.

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

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