2001 E46 320d se 136bhp-flat spots when pulling off

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  1. 2001 E46 320d se 136bhp-flat spots when pulling off 
    #1
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    gorillaman's Car Details
    Model of Car:
    320d se 136bhp
    Year of Manufacture:
    march 2001
    Transmission Type:
    manual
    Car Body Type:
    saloon

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    hi everyone. this is my first ever post on any forum!! i think i might need a remap .anybody suggest anybody in the nottingham area??also ,my car has done 105000 miles. is that a problem when remapping??
     
     

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    #2
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    Xmak 330d's Car Details
    Model of Car:
    330d e46
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    2000
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    Your better off finding out if you've a problem first

    EG getting a diognostic scan done to see if there's any fault codes showing.

    Can you describe what it's like a bit more?
     
     

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    gorillaman (31-07-2011)

  5. flat spot 
    #3
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    Model of Car:
    320d se 136bhp
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    march 2001
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    the car feels very sluggish at low revs.its better when warmed up a bit and on a run it smooth and sharp.i thought if i had a remap i might have a better drive around town e.g pulling out at roundabouts is a bit scary at the moment!!! any thoughts on what it could be.?many thanks
     
     

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    #4
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    TheEnd's Car Details
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    1998
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    A remap might patch over it, but it's not going to be the best way of getting the power back.
    If there is a dodgy sensor, or a split hose you could get something similar.
    There is a possibility that something is on the limit and remapping it might push it past that causing more problems, although usually the in-built safety systems will still be on watch and prevent any disasters.

    Once that is done, you can always get a remap done afterwards
     
     

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    gorillaman (01-08-2011)

  9.  
    #5
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    Jackmcl's Car Details
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    E36 328i Sport (Turbo)
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    Has this 'problem' suddenly strated happening, or has it always been sluggish?

    I had the exact same car & the same 'sluggish' feeling when driving - especially pulling away & sometimes 'flat spots' of acceleration at motorway speeds.
    I think it this is why they replaced this model with the 150bhp model which had much less of an issue with 'slow' low end acceleration.

    A couple of thinks to check:
    1) The flexible joint on the exhaust after the 1st cat from the manifold - these are notorious for breaking & causing back pressure (a possible explanation for sluggish behaviour)
    2) The state of the EGR valve going into the intake - may be clogged up with carbon deposits, easy(ish) fix to clean or replace with a Bypass valve.
    3) Unclip the switch to the MAF sensor & take her for a spin - there should be a MASSIVE difference in performance with it disconnected, if there is not a MASSIVE difference, then you may have a dodgy MAF sensor - giving the ECU the wrong info & 'bogging down' your acceleration.

    Not sure about re-mapping this engine - I had trouble getting mine done, but I think that was more down to lack of local expertise than the actual act of remapping the engine (being the older model) a lot of tuners claim increase to 165 bhp which should be possible...
     
     

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    gorillaman (01-08-2011)

  11.  
    #6
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    gorillaman's Car Details
    Model of Car:
    320d se 136bhp
    Year of Manufacture:
    march 2001
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    manual
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    saloon

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    thanks for you feedback.i think i will book it in somewhere and let them have a look.not got a clue where the maf sensor is etc.anyone reccommend a bmw independent in nottingham area?
     
     

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    #7
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    SlowTech's Car Details
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    330ci
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    2003
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    The MAF is situated on the drivers side of the engine in front of the Air Filter, if you remove the plastic engine covers you'll be able to see it clearly.

    The pics are from my 2003 320d and although the engine is different the location of the MAF and its appearance is identical..

    -

    If you'd still rather take the car to an Indy try looking in the Recomended Garages By County or a search in the Garages and Parts Retailers section.
     
     

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    gorillaman (01-08-2011)

  14.  
    #8
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    gorillaman's Car Details
    Model of Car:
    320d se 136bhp
    Year of Manufacture:
    march 2001
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    thanks.i will have a go and see if there is any difference when disconnected.cheers for the help
     
     

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