1999 E46 318 Mass Air Flow sensor for M43tu Engine

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  1. 1999 E46 318 Mass Air Flow sensor for M43tu Engine 
    #1
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    zak100's Car Details
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    Hi there I was wondering if any of you could advise me, I have the above but ever since I bought the car the engine light stays on. I've had it cleared and remedied what I thought was wrong i.e breather pipe, CCV and front vacuum pipes, the light was cleared and stayed off for 100 miles then it came on. I've been to an indy who's cleared all the lights and given me a printout with an error of P170 fuel trim they say there were no vacuum issues, however they've pinpointed the cause as a MAF issue which will cost 338 inc. Seems a bit excessive when I asked whether this could be done as a DIY they told me the replacemnt MAF has to be reprogrammed to the ECU is this correct.

    Would love to hear from you guys cheers Zak100
     
     

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    dailydoggy's Car Details
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    ide say rubbish on all fronts they are trying to rip you off..

    genuine MAF around 130-150 and a 2 minute swap out..

    dodgy MAF's rarely throw any sort of code but not impossible vacuum leaks usually throw that code..
    330i sport a big chunk of berlin...

     
     

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    Hello mate
    well maybe you could try cleaning the MAF sensor first but you need to be very carefull when cleaning it so its your choice. But if you get a original replacement part i dont think it need to be programmed.
     
     

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    blimey just looked at a bosch maf for your car and its 300 wrappers from ECP and if its an upgrade part to the original IT will have to be programmed..

    so i stand corrected..

    its bad luck bosch have recently increased the price considerably for an M43 engine MAF..

    http://www.allgermanparts.co.uk/ours.../> engine.html

    http://cgi.ebay.co.uk/Mass-Air-Flow-...item29fe883e51
    330i sport a big chunk of berlin...

     
     

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    A bit cheaper from the MAF shop;

    http://www.maf-shop.com/product_info...621433565.html

    Had no idea they had to be reprogrammed!? Never heard of anybody messing with the ECU after a change - wonder how you identify an upgraded MAF and what magic the indy has to do to reprogram it?
     
     

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    Quote Originally Posted by robby0 View Post
    A bit cheaper from the MAF shop;

    http://www.maf-shop.com/product_info...621433565.html

    Had no idea they had to be reprogrammed!? Never heard of anybody messing with the ECU after a change - wonder how you identify an upgraded MAF and what magic the indy has to do to reprogram it?
    i think it will say on the box or thre bumff if it needs an ECU upgrade depends on the cat number of the original part..

    personally ide plug the blighter in and see wot happens...
    330i sport a big chunk of berlin...

     
     

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    Thanks very much chaps I think I'll continue shopping around many thanks for your help

    zak100
     
     

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    #8
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    Quote Originally Posted by zak100 View Post
    Hi there I was wondering if any of you could advise me, I have the above but ever since I bought the car the engine light stays on. I've had it cleared and remedied what I thought was wrong i.e breather pipe, CCV and front vacuum pipes, the light was cleared and stayed off for 100 miles then it came on. I've been to an indy who's cleared all the lights and given me a printout with an error of P170 fuel trim they say there were no vacuum issues, however they've pinpointed the cause as a MAF issue which will cost 338 inc. Seems a bit excessive when I asked whether this could be done as a DIY they told me the replacemnt MAF has to be reprogrammed to the ECU is this correct.

    Would love to hear from you guys cheers Zak100
    Does you Car drive Normally?? I had same problem, and Dealer quoted same figure , Got MAF from ebay for 15, and took me 3 mins to DIY it!!
     
     

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    Hi. I have a 2000 318ise with m43 engine and the MAF was a straight swap, plug & play with a Bosch from ECP. Jim
    The older I get the wrong bit gets stiff !!
     
     

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    Thanks for your help chaps, once the MAF is replaced will the engine light go off automatically or does it need to be reset again?
     
     

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