Working in 171 fault code - 2000 (W) m43 318

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  1. Working in 171 fault code - 2000 (W) m43 318 
    #1
    BMW Master
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    dieselfitter251's Car Details
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    Hey folks, had a thread going in the 3 series and figured it may get a bit geeky so I thought I'd move it over here. No offence to geeks, I think I'm a bit of a geek ma'sell!

    A few screen shots...
    INPA_PrintFile_na_fs2.jpg

    INPA_Loader_0.jpg

    INPA_Loader_1.jpg

    INPA_Loader_2.jpg



    The Lambda codes have only just come up and I reckon could be a symptom of the vacuum leak as they're not present on every reading. Any input as to specific readings would be great.

    Cheers folks.
    BMW 318i se.
    K&N panel filter.
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    Mild mannered super hero by day... Musician by night...
     
     

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    #2
    BMW Master
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    dieselfitter251's Car Details
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    Engine Management Light Codes & Meanings

    Incidently cheers for posting this... Doesn't narrow down my problem but saves a lot of searching.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

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    #3
    BMW Master
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    dieselfitter251's Car Details
    Model of Car:
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    Also to add. I've recently replaced two of the small vacuum pipes (plastic T-piece pipes) at the front of the engine. Crankcase breather pipe. Fuel filter. Next to do will be the Crankcase Breather valve - known to split - I'm not convinced this is the problem but it's on the to do list, as I go along I'll also change out vacuum pipes. Whether they need it or not.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

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    #4
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    Right, this may get a bit confusing as I'm posting on another thread about the same problem but I'm taking a more systematic approach.
    I started replacing the vacuum pipes at the front of the engine, (I'll post some pics with the replaced pipes). Also cleaned the MAF and checked the air intake pipes etc. All seems ok with them. Also change all four inlet manifold seals, crankcase breather valve getting replaced tomorrow before being rebuilt. I'm going to do the rest of the vacuum pipes before tackling the sensors etc, leaving the MAF and DISA to last.

    Any thoughts or input appreciated. Cheers!
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

  7.  
    #5
    BMW Master
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    dieselfitter251's Car Details
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    Engine light came back on last night. Not a lot more left to change pipe wise now. No real change in the way the car drives although all flat spots seem to have disapeared, hard to tell when you're stuck in traffic! Looks like I may have to go down the MAF route before too long.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

  8.  
    #6
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    dieselfitter251's Car Details
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    So, quick scan before clearing the faults codes and I've now got a 150 code, secondary air pump. I've read somewhere about replacing the small rivets on the top with nuts and bolts to properly seal the top. Anybody tried this? I'm obviously moving the vacuum problem around as this is a new fault but I'm not sure how this relates to the 171 fault? Secondary air system is only used on cold starts, to help heat the CAT up. Any thoughts? Cheers.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

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    #7
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    Well, I've done about four hundred miles and he light hasn't come back on. The most recent jobs carried out were repairing the secondary air pump (cable ties for now) and temporarily patching an extremely small split in rubber air pipe which attaches the MAF to the throttle body. I've just got to scan the car to see if there are any outstanding issues before doing a more permanent fix on these two items.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

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    #8
    BMW Master
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    dieselfitter251's Car Details
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    Sod's bloody law. Engine light came back on last night. It's got me to wondering about when this actually happens. I've got a bit of a sticky accelerator pedal (at tick over), once I'd put the top part of the engine back together after replacing the crankcase breather valve my throttle body has stuck closed. It took a wee bit to get it free but no problems now. The acc pedal has alway been a bit sticky so I've always just adjusted it on the cable. Now, if the idle control sensor is out of range due to the throttle stop screw needing adjusting could this cause the 171 fault code?
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

  11.  
    #9
    BMW Master
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    dieselfitter251's Car Details
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    Spoke to my mechanic (ex BMW) and he reckons it's unlikely to be the idle position sensor so I'm going to go with reseting the error and adaptions and unplug the MAF to see what happens.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

  12.  
    #10
    BMW Master
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    dieselfitter251's Car Details
    Model of Car:
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    Year of Manufacture:
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    You've all been a great help but I'm going to shift this post to the e46 forum where I suspect I should have started this thread in the first place.
    BMW 318i se.
    K&N panel filter.
    Cybox SS back box.

    Mild mannered super hero by day... Musician by night...
     
     

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