2003 E46 316i - codes - help needed(FIXED)

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  1. 2003 E46 316i - codes - help needed(FIXED) 
    #1
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    For the past year I have been having problems with my bmw where the EML, DSC and Brake light would start flashing (and eventually turn still) whilst driving. This causes loss of power in the back, sometimes the car would rev itself up. It's gotten so bad that i get this every 5-10 minutes of driving. I have got the following codes, would greatly appreciate some advise on how to fix this.

    2787
    2786
    2799
    27B8
    2783

    Thanks in advance.
     
     

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    2783. Hot film mass air flow sensor.
    2786. Throttle valve potentiometer.
    2787. Throttle valve potentiometer 2.
    27B8. Differential pressure sensor, intake manifold not plausible.
    2799. Throttle valve adaptation, abort due to environmental conditions.

    You should clear the codes and re-read the codes when the car plays up again.
     
     

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    gyphorz (19-03-2011)

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    Quote Originally Posted by Ronnie View Post
    2783. Hot film mass air flow sensor.
    2786. Throttle valve potentiometer.
    2787. Throttle valve potentiometer 2.
    27B8. Differential pressure sensor, intake manifold not plausible.
    2799. Throttle valve adaptation, abort due to environmental conditions.
    Thank you. Do you have any recommendations as to what needs to be replaced? A mechanic told me I need to replace the throttle housing but i would like to
    be sure before i buy the part (costs £240)

    Edit : the mechanic cleared the codes (first hand), then as soon as i took it out his garage, the faults came back on. He checked the codes and he wrote me what i said above and told me i need a new throttle housing. (i asked him if i buy this would the problem be fixed, he said "we need to start somewhere lol).
     
     

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    I presume he's checked for any air leaks??
     
     

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    Quote Originally Posted by btccfan View Post
    I presume he's checked for any air leaks??
    No, he just checked it against the computer. The problem has been getting worser and worser, i get it almost as soon as i start driving. When i start the car the engine revs itself to 3/4k rpm (its not cold outside either). Problem usually goes away if i shut the engine off and wait then start it off again. I really dont want to blow £250 on something my car doesnt need .. (last year a mechanic told me to replace the brakes, and cables ... it didnt help!).
     
     

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    Check yourself to see if you can spot any air leaks.
    It should run better with the maf unplugged if the maf is at fault.....I think
     
     

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    gyphorz (19-03-2011)

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    The fact that it has come up with the 2 potentiometer fault codes says to me that it needs a throttle body providing the loom is OK.
     
     

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    gyphorz (19-03-2011)

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    Quote Originally Posted by Ronnie View Post
    The fact that it has come up with the 2 potentiometer fault codes says to me that it needs a throttle body providing the loom is OK.
    Might be a daft question but is throttle 'housing' and throttle 'body' the same thing? (dont have mechanical experience). I'm not sure if i should go on eBay and purchase a housing for £50-£100(used) or go to bmw and buy it for £250 brand new =/.
     
     

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    Quote Originally Posted by gyphorz View Post
    Might be a daft question but is throttle 'housing' and throttle 'body' the same thing? (dont have mechanical experience). I'm not sure if i should go on eBay and purchase a housing for £50-£100(used) or go to bmw and buy it for £250 brand new =/.
    Yes same thing, number 1 here, http://www.realoem.com/bmw/showparts...01&hg=13&fg=15

    Deleting adaptations after repairs:
    On replacement of the throttle valve, the MDK adaptations are to be deleted to avoid a fault code memory entry. (So you'll need to get the car hooked up on diagnostics again after fitting the throttle housing)
     
     

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    gyphorz (19-03-2011)

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    Quote Originally Posted by Ronnie View Post
    Yes same thing, number 1 here, http://www.realoem.com/bmw/showparts...01&hg=13&fg=15

    Deleting adaptations after repairs:
    On replacement of the throttle valve, the MDK adaptations are to be deleted to avoid a fault code memory entry. (So you'll need to get the car hooked up on diagnostics again after fitting the throttle housing)
    Thank you. You seem to have experience and maybe you could advise me? I have found the following items on ebay. Could you please tell me which one i should buy ? / will it fit my vehicle?

    Link1
    Link2
    Link3
    Link4
     
     

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