RE: a strange noise.

[Chris Coracini <Coracin@usdl.com>]

could be that.  that also causes the downpipe to hang lower and hit the
antiroll bar.  check to see if it's touching...  i got nasty vibration
from the exhaust touching the underside of the car over the rear axle.
it was really smashed up against it, so i didn't hear it vibrate back
there, i just felt the entire car vibrate.  could also be tranny problem
or CV problem, but not as likely.

chris
86 16V scirocco

>----------
>From: 	Stephen Stalcup[SMTP:elfking@nmt.edu]
>Sent: 	Monday, January 18, 1999 1:54 PM
>To: 	Jonas Karlsson; scirocco-l
>Subject: 	Re: a strange noise. 
>
>Well I went out and did some more testing. The noise/vibration  only happens
>when the engine and wheels are engaged. And it only happens after 4000 rpm.
>almost every gear. Could it be a motor mount? Any help would be nice
>
>Steve Stalcup
>'88 16v
>-----Original Message-----
>From: Jonas Karlsson <jkarlsso@metabolex.com>
>To: scirocco-l <scirocco-l@scirocco.org>; Stephen Stalcup <elfking@nmt.edu>
>Date: Sunday, January 17, 1999 3:36 PM
>Subject: RE: a strange noise.
>
>
>>When one of my front wheel bearings went bad, it caused my whole car to
>vibrate. Not so noticable feelings-wise, but all of the interior panels
>would rattle like crazy, and after a week of ???, a deafening noise
>developed that would fill the cockpit at any speed above 45 mph.  But you
>might not be experiencing this. You say that it is only present when the car
>is in gear. Did you test it? I.E. did you take it out of gear while on the
>highway, and did the noise disappear? If so, then it is NOT the wheel
>bearings.    Do some testing, to narrow down where it's from. Take notice of
>the conditions that make the noise, then isolate each of those conditions.
>(i.e. For me, there was a loud-ass noise when going above 45 mph. The
>conditions were: my engine would be revving at about 3-4K, the car was in
>gear, and the wheels were turning. To isolate the engine, I just revved it
>while at a stop- no noise. To isolate the drive-train, I pressed the clutch
>in while going on the highway- noise still there. This pointed towards the
>wheels/drivetrain. To finalize the trackdown, the noise would disappear when
>I took this -35 mph- left turn while going 55. This took the load off of the
>left front wheel, indicating a bad bearing)
>>  Hope you hunt the problem down.
>>sorry for the long post
>>
>>Jonas 85 Scirocco
>>
>>PS. I bought the wheel bearing puller from SP tools (through TT). I would
>be willing to help someone replace their bearings with it. I live in the SF
>bay area, and I just want pizza, beer & conversation in exchange :-)
>>
>>Stephen Stalcup wrote:
>>>Well after just getting my car back I noticed an odd noise. This >noise
>only happens after about 4000 rpm and when it is in gear. >It's like my
>whole car is vibrating. I didn't notice this before >I put it in the shop,
>but it could have been a noise that was >covered up by the bad passenger
>side motor mount. This >"rattling/vibrating" seems most prominent in 5th
>gear. but it >happens in most gears. it isn't very pronounced in 4th. Can
>>anyone help me out with this noise.
>>>
>>>Stephen Stalcup
>>>'88 16v
>>>
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>>
>>
>
>
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