530i 2001 e39 slight missfire on low revs

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  1. 530i 2001 e39 slight missfire on low revs 
    #1
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    JONATHAN333's Car Details
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    HI HAVING A LITTLE PROBLEM WITH MY CAR, IT HAS A SLIGHT MISS ON LOW REVS THEN IS FINE REST OF WAY THROUGH REV RANGE, THINKING IT COULD BE THROTTLE POSITION SENSOR BUT NOT SURE?,ALSO ON YOUR ODOMETER DISPLAY I CAN BRING UP SOME TEST CODES CAN YOU TELL ME IF A FAULT CAN BE READ HERE AND IF SO HOW I READ THEM, CHEERS JON:cool:cool:cool
     
     

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    #2
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    Have you checked all the hoses for air leaks?

    A leaking hose can affect the running of the vehicle
     
     

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    #3
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    JONATHAN333's Car Details
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    Thanks no not properly and you could be right, did think this could be the problem as there was a bit of info in my cars history that it had a slight airleak on inlet manifold change over flap not sure wha bit that is??? And no recall of it been fixed thanks for the help
     
     

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    Does your car seem to be using more fuel than usual?

    Please keep us posted
     
     

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    #5
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    It seems to be using the same really i mean as only owned it 3 months and not noticed a change, but there not the best on fuel but who knows if i am getting under average, have just put a new maf sensor on and its worse but worked better previous unplugged. Is it worth disconnecting the battery so the ecu re-learns things!?
     
     

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    Fault seems to be not as bad cleaned plugs up engine was running rich due to had to replace maf sensor so disconnected it, so presume thats why it ran rich. Going in for diagnostic so will see what the outcome is!
     
     

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    #7
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    Getting 21 to gallon average on urban and extra urban runs!
     
     

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    You need to get the fault codes read, then post them up here and we can help you further.

    There's no way of reading the fault codes through the dash, only way is with a scanner. I'd suspect a air leak or a cam sensor
     
     

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