2005 E46 320d, Newbie in need of expert MPG help! - Page 2

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  1.  
    #11
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    WeGoTDiZ's Car Details
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    I'm pushing 45 - 50 mpg out of my 320d and motorway is about 43 roughly
    Modifications To Be Done:-
    FK AK Venom Coilovers - Unfinished
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    #12
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    Has the egr valve ever been cleaned out/disconnected?
    Modifications To Be Done:-
    FK AK Venom Coilovers - Unfinished
    Gloss Black Wheels - Unfinished
    Black Kidney Grills - Finished
    Angel Eyes - Unfinished


     
     

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    #13
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    Quote Originally Posted by DERVMSPORT View Post
    Thanks for the warm welcome people.,
    well i went to the garage this morning and had a diagnostic check carried out. The indie is an ex-bm technician so he showed me the ins and outs of the car.
    Unfortunatley after clearing a few error codes and taking it for a run he gave me the bad news saying the boost pressure controller is not opening up correctly or is opening up intermittently hence the laque of torque and the poor fuel economy.. or something along them lines. I dont know the exact component he was referring to or if that is the correct name for it but he mentioned that the component is part of the turbo and can not be bought seperatley...

    so guys any thoughts/advice/on where i should go to get a turbo and what i should be looking out for..

    this is not a good start to my bmw
    Hello and welcome DERVMSPORT

    sorry to hear about the turbo's electronic actuator your indy is right they cant be bought separately but they can in some cases be refurbished.
    you'll need to confirm what turbo and actuator manufacturer you have and contact companies like BMW 3 Series Turbo Actuator Problem
    or Turbo parts, spares & rebuild parts as they may be able to help at a fraction of the cost of a new Turbo and actuator?

    hth and GL
     
     

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    #14
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    slow tech thanks for the reply. Well to be honest it gets worse but i wil leave it for another post as i need to gather as much info and help as i can to sort this turbo out.
    i have a few questions and would appreciate your prompt response. if necessary please move this post under a new topic.
    Where is the best place to find another turbo? ebay/breakers/forum members?? is there anyone breaking a 320d?
    What sort of price could i expect to pay for another turbo including labour?
    Should i get a re-con on my own turbo as i've heard its not a good idea to go for re-con turbos?
    How do i find out what make/model my turbo is?
    thanks
     
     

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    #15
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    Quote Originally Posted by DERVMSPORT View Post
    if necessary please move this post under a new topic.
    Sorry I don't have that level of clearance fraid you need to start your own thread in the E46 tech section BMW 3 Series Forum - Technical Talk on the BMW E46
     
     

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    #16
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    no problem will do..
    cheers
     
     

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    #17
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    Hello and welcome to the forum

    Andy
     
     

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    DERVMSPORT (14-02-2012)

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    #18
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    So im starting this thread up again. Those of you who have been reading my posts would know the nightmare i had with my MAF/MAP problem. see below
    E46 320d MAP sensor problem URGENT HELP!

    anyways thats all sorted now but the poor mpg problem remains.
    What have i done so far i hear you ask?

    well i've replaced the egr thermostat with a brand new ones as it wasnt reaching optimum temp
    i've cleaned the egr valve
    i've replaced the map sensor with a brand new one
    i've cleaned the maf sensor

    all these things have made a drastic improvement to performance as the car pulls like a train now but upon resetting the obc
    the car still read mid 20's which is baffling me because if anything the car runs so much better now. No irratic idle, no lumpy start up, turbo kicks in at 1700rpm, i havent noticed much black smoke..

    what to do?
     
     

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    #19
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    Have you done a proper fill to fill test, the dashboard mgp reading can be way out... although I beleive it can be recalibrated through the secret menu.

    Put it simply how many miles do you get on a tank, I was getting anything from 450-650 on my 320d depending driving style (450 town only, 650 driving at 70mhp on the motorway all day)
     
     

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    #20
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    hmm difficult to say as i've not done a brim to brim. But i put in £25 the other week before i had the maf problem and it gave me 105-110 miles before the light came on which worked out to 28mpg according to the calculator. That is very poor.
    Based on the npia results from yourself i recall glow plug 3 flagging up. would this be a cause for low mpg?
    i've noticed the temp gauge doesnt quite reach 12 mark exactly and i've read on other posts that the main stat can make alot of difference.. i wonder??
    other than that im running out of ideas now. i've yet to clean the manifold but im really not up to it atm
     
     

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