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Thread: 5hp30

  1. #1
    Ollie Guest

    Default 5hp30

    Hello there, can anyone tell me what causes the "whirring" noise in these gearboxes, usually heard at startoff or under heavy load. Its the ZF tranny in a 94 540.

    Thanks

  2. #2
    Join Date
    Jan 2004
    Location
    Tampa Bay, Florida, USA
    Posts
    898

    Default 5HP30 Whirring Noise

    I've had that noise in my trans since I bought the car. It is louder when cold, then tapers off. Dealer couldn't figure it out. It's been there for the last 100,000 miles. I figure I'll wait till it absolutely fails.

    MBXB
    1994 540iA 140K miles
    EAT Chip (Under Test)

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,695

    Default Trans is probably sucking air

    between the filter and the transpump, between the O rings, you can double them up and the sound should go away.
    95 E34 530I V2.31
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  4. #4
    Join Date
    Jan 2004
    Posts
    4,148

    Default Evidently your dealer missed this service bulletin










    Quote Originally Posted by MBXB
    I've had that noise in my trans since I bought the car. It is louder when cold, then tapers off. Dealer couldn't figure it out. It's been there for the last 100,000 miles. I figure I'll wait till it absolutely fails.

    MBXB
    1994 540iA 140K miles
    EAT Chip (Under Test)

  5. #5
    Ollie Guest

    Default

    Thanks a lot fellas. I've had the tranny re built, and it still does it. Under warranty the tranny shop has replaced just about all moving parts...they're about to put it back in for the 3rd time tomorrow...I'll let you know how it goes. But thanks for the advice...

    /Ollie

  6. #6
    Join Date
    Feb 2004
    Posts
    4,892

    Default

    Whoa... wait a minute... you mean you spent $2500+ for a 10 cents O-ring?

  7. #7
    Ollie Guest

    Default

    Probably...the tranny has 140K on it anyway...but it seems my physics teacher was right.."the person that collects all his information, too late, is the perfect definition of a fool"....I like to think he was just trying to get us to ask questions...

  8. #8
    Join Date
    Jan 2004
    Location
    Tampa Bay, Florida, USA
    Posts
    898

    Default

    Thanks Bill!!
    It's now on my list of thing to do.

    Ramon
    MBXB

  9. #9
    Join Date
    Feb 2004
    Posts
    4,892

    Default

    Eh... You probably could have postponed the ineviteble by several years... if it wasn't slipping, then it could have lasted a while. Hope you get good warranty with the new rebuilt.

  10. #10
    ollie Guest

    Default

    Indeed, the usual 12k or 12 months. Thanks for all your help. I'll post a note in a few days, and let you know if the filter kit sorts it out.

    Thanks.

    /Ollie

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