2001 E46 325i, intermittent sensor problems need help please!

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  1. 2001 E46 325i, intermittent sensor problems need help please! 
    #1
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    SpidyM's Car Details
    Model of Car:
    325i SE
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

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    Feb 2012
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    Hi all,

    Will try not to bore but get to the details, basically ive owned the for-mentioned 325 for 2 weeks and it was bought down south, near London, my old boy picked it up drove it up and mentioned it stalled a few times but was fine apart from that, well since then, every 2nd or 3rd time i start it a little press (maybe half inch ) on throttle she will stall, and then u turn over again and rev her up then she stalls again. anyway this can go on and on for quite a few times and even then its patchy running, Took it out for a long spin and found very little power there, seemed like not enough power getting through.Sometimes car will run fine until shutdown then a restart is like a totally different car.
    Anyways so far Ive disconnected the MAF, and took it for a short run and it was much better, so i thought MAF is the culprit (bare in mind im defo no mechanic) so i got hold of some CRC cleaner, took the MAF out (its a Siemens make) and cleaned the sensor, replaced everything and seemed to go ok, turned engine over 4-6 times just to be sure. Then when i got home same crap again :(

    Just want to know, shall i look for a new MAF sensor? to me it seems to be that, but getting very low on cash so thought id ask for some advise before i buy a new one, Any advise much appreciated

    PS, when ignition is on (not turned over) engine light appears orange doesnt go away, once engine turned over light goes away, not sure if that means anything as it does go away, but stays on during ignition ...

    Thanks in advance

    Mike
     
     

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    #2
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    Ronnie's Car Details
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    I would check for any air leaks from split hoses, split vacuum pipes, split engine breather pipes or split induction pipes, also any valves and diaphragms that may have failed. Any air that is sucked into the engine should travel past the Air flow meter otherwise it will give you a running fault and can trigger a Airflow meter fault code.
     
     

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    #3
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    SpidyM's Car Details
    Model of Car:
    325i SE
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
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    Saloon

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    Inverness, Scotland
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    Thanks Ronnie, will double check all pipes etc, my m8 gave me a fault reader but its OBD2 and plugged it in and didnt work so im guessing my car is just OBD1 ?? it was registered on the 3rd Jan 2001 so right on the line for OBD2 (i think thats when it first was officially used in Europe?)
     
     

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    #4
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    Yeah you would be better getting the fault codes read using BMW specific equipment.
     
     

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    #5
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    Ok will look for a BMW scanner tool thanks m8
     
     

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    #6
    Bimmer Fan
    Car Details
    SpidyM's Car Details
    Model of Car:
    325i SE
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

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    Ok i managed to get the OBDII scanner to work, came up with 4 codes
    P0102 (Mass Air Flow)
    P0344 (Camshaft A sensor intermittant)
    P0369 (Camshaft B sensor intermittant)
    P1619 (MAP cooling signal low)

    as i have already cleaned the MAF im guessing its faulty as checked the air intake for leaks, as far as i can tell there aint any.
    I have cleared off the codes and was looking to buy a MAF sensor very cheap though
     
     

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