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    1. 03-27-2009 04:56 PM #1
      my buddies car makes a mean rattle while idling. As soon as you increase the RPM it stops and sometimes when it returns to idle the rattle resumes. Thoughts and ideas.. thankx

    2. Member Puddin Tain's Avatar
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      03-27-2009 05:26 PM #2
      that sounds exactly like my poly mounts... it only rattles at idle and as soon as you give it a little gas it goes away
      Formerly Korre07

    3. 03-27-2009 07:20 PM #3
      so is it loose mounts or something else

    4. Member Puddin Tain's Avatar
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      03-27-2009 07:21 PM #4
      i said it sounds like poly mounts... not loose mounts.... does he have stock motor mounts or poly??
      Formerly Korre07

    5. 03-27-2009 07:22 PM #5
      stock

    6. 03-27-2009 08:07 PM #6
      Wheres the rattle comming from? passenger side of the engine bay? If so, does the rattle go away around 1900rpms and return when back around that area?

      If so, stop driving/starting the car and do your timing belt. 99.99% chance its ur tensioner about to go poop. Which is a ****ty rebuild.


    7. Member 1sexy1.8T's Avatar
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      03-27-2009 08:25 PM #7
      i had a mean rattle at idle prior to my exhaust install...

      If the mounts are worn when you stomp the gas it will make a click or a knock b/c the engine will move...

      My rattle however came from the suuport bracket on the exhaust....in the middle of rthe exhaust just after the cat there is a support braket type of hanger thing that is bolted to the car with like 10 nuts...this thing was semi loose and i made a mean metal on metal rattle, i got the bigger pipe and had to basically strip the metal parts out and no more rattle...

      i hope that it is simply the exhaust hanger issue for you too....but the previous guy had a point and i that is ur issue then get someone who knows what they r doing to check ur car out


    8. Member 1sexy1.8T's Avatar
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      03-31-2009 10:22 PM #8
      how did this turn out for you sir?

    9. 07-23-2009 09:23 PM #9
      I have this rattle! I think it's the AC, but that could be a coincidence. Whenever I turn off the A/C, this rattle goes away.

      I haven't yet had time to get back to the dealer...how did yours turn out?


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      07-24-2009 11:51 AM #10
      x2, I'm curious how other people are doing with this rattle.
      I've got a similar problem. My car rattles like crazy at idle, the longer it's been in use the worse it gets. I think it's at 140k on the stock tensioner, I know there's at LEAST 50k on the tensioner. Time to do the whole belt eh?

    11. Member oj1480's Avatar
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      08-11-2009 03:03 PM #11
      any updates?
      probably due to worn mounts

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      08-11-2009 03:27 PM #12
      Well, for my rattle I did the t-belt and tensioner since it was getting close anyways. The rattle is still there just as bad. I have the same symptoms as the OP and when I turn off the car the rattle slows with the motor. I really think it's a valve issue... so looking into AEB head

    13. 08-11-2009 03:43 PM #13
      I get the rattle too.

      I've basically had the entire engine rebuilt - no clue why it rattles so I just deal with it. :-/


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      08-16-2009 11:35 PM #14
      I've got a rattle too. It is audible from just below 1K RPM up to either 1600 or 1800, at which point is shuts off like a switch. Then when the RPM comes back down, the rattle is on like a switch again as it comes down through 1600 RPM.

      I did the cambelt with an ECS kit that included a new tensioner at 91 K miles; the car now has 107K. With only 16k miles on the tensioner I feel doubtful that that is the problem, especially since I've been going around the engine with a stethoscope and the rattle is not coming from either the tensioner or the mount. Best I can tell, it's coming from somewhere inside the front end of the engine (as in nearer the #1 cyl than the #4). I've been theorising a sticky lifter shy of opening up the head, I don't know how I'd tell for sure.


      Modified by The Veg at 8:38 PM 8-16-2009


    15. Member crazyass713's Avatar
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      08-17-2009 01:23 AM #15
      Flywheel chatter for you aftermarket flywheel guys...
      2001 Golf mid-engine RWD Allroad 01E 2.7T TVS1320 BW S374 twincharged (long title, I know)

      2004 A4 Ultrasport 2.0T 3076R built to the hilt all the way around (daily sleeper status)

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      08-17-2009 01:56 AM #16
      Yep... Car could have a lightweight flywheel put in it from one of it's previous owners, you never know.

      Even the 17-20lb steel ones are going to chatter somewhat, the light aluminum ones... a lot.

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    17. 08-17-2009 08:46 AM #17
      Noone has suggested a cam chain tensioner rattle? When bad, they seem to rattle like crazy on a hot motor below 1200-1300 rpm. As soon as you rev above that, the rattle goes away instantly.

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      08-24-2009 08:54 AM #18
      Nat, as painful as the price of that part is, it seems plausible.

      So the follow-up questions are:
      1) If the chain tensioner is at the #4 end of the engine, why is the sound coming from the #1 end?
      2) You mention this noise with hot engines...mine does it hot or cold. Is that inconsistent with the chain tensioner theory?
      3) Is there any way to positively test the chain tensioner before I hock a kidney to buy a new one?

      I can definitely eliminate the flywheel thing because I am the original owner of this car so if somebody swapped flywheels you'd think I'd know about it.


    19. Member wolfsburg2617's Avatar
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      08-24-2009 10:02 AM #19
      all that anyone can do is guess as to what your problem is. without a sound clip this is pointless. all you'll end up doing is throwing parts at it.

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      08-24-2009 10:36 AM #20
      That's why I asked question #3, so I can know for sure before I throw money.

    21. Member wolfsburg2617's Avatar
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      08-24-2009 03:42 PM #21
      you'll be throwing money into new seals and gaskets when you take the valve cover off.

      is the noise near cylinder #1 or #4. isolate the noise and you'll pinpoint what part(s) on the way out.


    22. 08-24-2009 11:40 PM #22
      Is it coming from the engine? I had a loose hanger near the flex pipe that sounded like a knock from my engine. Only heard the rattle at idle mostly when in gear. I know this seems simple but people always jump to the worst.

    23. 08-30-2009 01:43 PM #23
      Any change in rattle prob.

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