My iMac sounds like an old diesel car engine

Discussion in 'Mac Pro' started by howesey, Jan 22, 2006.

  1. howesey macrumors 6502a

    Dec 3, 2005
    My iMac keeps on sounding like an old diesel car engine every so often. The sound of the cams going tap tap tap.

    It could be just a fan or the HDD. Any ideas?
  2. ruutiveijari macrumors regular

    Dec 11, 2005
    What kind of iMac are we talking about?
  3. Jay42 macrumors 65816


    Jul 14, 2005
    I once had a PC laptop where a bearing went bad, causing the fan to make much more noise, kind of like an engine revving. It's tough to say if this is necessarily the problem you have, but it could be a possibility. Is the fan making more noise than it used to or is it just noisy in general?
  4. jmsait19 macrumors 6502

    Jan 26, 2004
    Though they eventually did acknowledge the white patches on the PowerBook...

    So keep beating on 'em, eventually they'll give...
  5. BakedBeans macrumors 68040


    May 6, 2004
    What's Your Favorite Posish
    i sent mine back with exactly the same problem....
  6. howesey thread starter macrumors 6502a

    Dec 3, 2005
    iMac G5 rev C. It's two months old.

    I had it 20 or so minutes ago. It kicks in, and fades slowly after a few minutes.
  7. howesey thread starter macrumors 6502a

    Dec 3, 2005
    Made a recording of the sound. First is with the sound, second is normal. Ignore my mouse click on the second. Fan speeds are both the same.

    I also get that click click sound from the CPU fan.

    Attached Files:

  8. tivoboy macrumors 68040

    May 15, 2005
    got it

    I got it, same issue here with the intelimac?
  9. howesey thread starter macrumors 6502a

    Dec 3, 2005
    Story so far. I went to the Apple store in Birmingham, UK. I spoke to one of the sales consultants and he has told me to bring it in, it's not normal. We had a listen to some of the 17" and 20" iMacs which were both rev c and Intel and they all didn't make the click sound.

    I will take my Mac in on Monday hopefully.

    The sound that the other iMacs made was like me blowing with my mouth.

    I'll keep you all updated.
  10. tivoboy macrumors 68040

    May 15, 2005
    how does it sound

    so, for those of you, us with this problem.

    how does it sound? Can you hear it when the computer starts up? For example, when I start the computer up, I hear this GRRRrrr, then that goes away, but I think the FUTURE sound say after 30 minutes or so IS the Grrrr, that started it just comes back.

    the clicking, sounds like a differant area.
  11. tivoboy macrumors 68040

    May 15, 2005
    really no sound

    so, is there REALLY NO sound when you intelimac is running? Meaning, if you put it to sleep, there is no differance. I can certainly hear the gurgling sounnd coming from the back when I hit ESC and bring it out of sleep. But, I wonder if this is now just some sort of system noise?

    I really don't want to return ANOTHER one, but if this is an issue that is going to get worse then I don't want to risk it.
  12. tivoboy macrumors 68040

    May 15, 2005
    how are you getting the NORMAL sound, does yours make this sound intermittantly?
  13. howesey thread starter macrumors 6502a

    Dec 3, 2005
    I havn't had time to take it to the Apple store.

    I always get a GRRRR sound, which I didn't hear on other iMacs. This sound happens at all RPMs, as the fan gets faster, it gets louder - So it has nothing to do with the fan moving slow which some can make odd sounds.

    However, once every few days I get a very loud GRRR diesel engine sound (so loud I cannot hear my TV), the only way to get rid of it is to put the Mac to sleep or shutdown, or leave it a while and it will start to fade away. This sound still happens even when the HDD is dismounted and spun down, no DVD/CD in the drive, so it has to be a fan.
  14. tivoboy macrumors 68040

    May 15, 2005

    alright, you GOTTA take that thing back. Mine is just annoying and a bit irrritating but yours really sounds like it has some issues.
  15. -Garry- macrumors 6502a


    Oct 23, 2005
    Manchester, UK

    This thread makes interesting reading. My 20" iMac iSight has exactly the same problem. The noise is always present but is worse at some times than others.

    Luckily I have two iMac G5s so I can confirm that the other one doesn't have this problem at all. The only difference is that mine has an extra 1GB RAM. I'm going to try and remove it and if it's still the same I'll be demanding a replacement.
  16. cblackburn macrumors regular

    Jul 5, 2005
    London, UK
    I have a 12" Powerbook G4 Rev. B which has said fscking annoying white patches. Is there anything I can do about it (the 'book is covered by Applecare)

  17. tivoboy macrumors 68040

    May 15, 2005
    what sort of sounds do the imac g5 make? Is it really absolutely nothing? when you shutoff the computer is there NO sound that is going away?
  18. -Garry- macrumors 6502a


    Oct 23, 2005
    Manchester, UK
    I returned my iMac G5 yesterday ... now I have to wait for my credit card to be refunded before I can buy an Intel iMac.

    The iMac G5 I had makes a sound like, well, a quiet diesel engine. It's just annoying in a quiet room, or when watching a DVD. Most of the time it's not noticable, but it's a real nuisance once you notice it.

    The other iMac G5 I have is completely silent, except for the sound of air moving, so I know not all iMac G5s suffer from the problem. Interestingly though, one of the display models in the shop yesterday had the same problem, but I'm yet to see an Intel iMac suffer from the rattley fan.
  19. gusanitoverde macrumors 6502


    Jun 12, 2003
    Northern California
    Do you think...

    That the intel macs will also be noisy? I am planning to buy one for a recording music mini - studio.
  20. plinden macrumors 68040


    Apr 8, 2004
    My new Intel iMac is absolutely silent. Having lived for four years with a Dell Space Heater (TM) under the desk, I keep asking myself if the fans are actually broken. I hope they're not.
  21. BobbyHill32 macrumors newbie

    Feb 3, 2006
    A week ago I bought a 17" intel iMac and there was a crackling sound coming through the machine whenever an application was in use I swapped it out at the store and the 2nd one did it and it was worse. Whenever the processor was running it sounded like a bad radio signal. Apple is now swapping it out direct with them. I will get it on Mon. so I will see what happens.
  22. p:ro macrumors member

    Feb 4, 2006
    white spots on powerbooks

    Just for the record: 4 Chris

    I brought it almost 8 months later into a OfficialAppleDealerStore and got a new screen. Production failure accepted by Apple as far as I know!!! If you still have AppleCare you shouldn't have any trouble at all (twice :cool: )

    Enjoy your new screen Chris
  23. jemroc Guest

    Had the same problem with my 20" iSight G5. Made this buzzing noise the first time I started it up out of the box. I'm curious how widespread this problem is considering that several people have mentioned that their iMacs are whisper quiet. Perhaps Apple corrected this problem in their later batches. Is there any way to determine the manufacture date of an iMac? I bought mine just last week, but it still shipped with Mac OS X 10.4.2, which is pretty dated. I'm thinking it was probably sitting on the shelf at Amazon's warehouse for a while.

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