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Saab noise
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CarGuru > Saab > Saab noise 10 April 2005 17:49:32

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Saab noise

Dennis 10 April 2005 17:49:32
 I have a 95 Saab 900S with a 4 cylinder non turbo engine. It has a noise
that is making me very nervous.
When the engine is first started cold it makes a noise very similar to an
idler or tensioner with a bad bearing. Almost like a bad water pump bushing.
I have removed the serpentine belt that drives all the other units and the
noise remains. It sounds as though it may be coming from under the valve
cover. Any ideas before I tear the engine out for examination?
Thanks,
Dennis


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Dave Hinz 6 April 2005 01:15:40 permanent link ]
 On Tue, 5 Apr 2005 17:04:02 -0400, Dennis <larch42@pemtel.net­> wrote:> I have a 95 Saab 900S with a 4 cylinder non turbo engine. It has a noise > that is making me very nervous.> When the engine is first started cold it makes a noise very similar to an > idler or tensioner with a bad bearing. Almost like a bad water pump bushing. > I have removed the serpentine belt that drives all the other units and the > noise remains. It sounds as though it may be coming from under the valve > cover. Any ideas before I tear the engine out for examination?

Timing chain maybe? Kind of a rattly, metallic noise, that changes
directly with engine RPM? Or, is it a squealing or chattering noise,
or how would you characterize it?

How many miles? Any remarkable service history?

Dave Hinz
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Charles C. 6 April 2005 12:53:51 permanent link ]
 Dave Hinz wrote:> On Tue, 5 Apr 2005 17:04:02 -0400, Dennis <larch42@pemtel.net­> wrote:>
I have a 95 Saab 900S with a 4 cylinder non turbo engine. It has a noise >>that is making me very nervous.>>When the engine is first started cold it makes a noise very similar to an >>idler or tensioner with a bad bearing. Almost like a bad water pump bushing. >>I have removed the serpentine belt that drives all the other units and the >>noise remains. It sounds as though it may be coming from under the valve >>cover. Any ideas before I tear the engine out for examination?>
Timing chain maybe? Kind of a rattly, metallic noise, that changes> directly with engine RPM? Or, is it a squealing or chattering noise, > or how would you characterize it?>
How many miles? Any remarkable service history?>
Dave Hinz

Add to the above (hence posting in addition to Dave's msg):

Manual or auto gearbox?
What happens once the engine is warmed up?

Could this be the tensioner for the serpentine belt?

did you run the engine with the serpentine belt removed and you say the
noise remains?

Charles

--

Please remove _removeme_ to reply.
Work: http://www.somis.du­ndee.ac.uk/
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Pooh Bear 7 April 2005 09:49:57 permanent link ]
 
Dennis wrote:
I have a 95 Saab 900S with a 4 cylinder non turbo engine. It has a noise> that is making me very nervous.> When the engine is first started cold it makes a noise very similar to an> idler or tensioner with a bad bearing. Almost like a bad water pump bushing.> I have removed the serpentine belt that drives all the other units and the> noise remains. It sounds as though it may be coming from under the valve> cover. Any ideas before I tear the engine out for examination?

What mileage has it covered ? Has it got a Saab service history ? My 9000 with
about 170k miles on it sounds a bit rattly when cold but sounds sweet when warm.

You *have* been using synthetic oil in it haven't you ?

Graham

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Sleeker GT Phwoar 10 April 2005 17:49:32 permanent link ]
 In article <4253a395$0$26334$d­b0fefd9@news.zen.co.­uk>,
c.k.christacopoulos­_removeme_@dundee.ac­.uk says...> Dave Hinz wrote:> > On Tue, 5 Apr 2005 17:04:02 -0400, Dennis <larch42@pemtel.net­> wrote:> >
I have a 95 Saab 900S with a 4 cylinder non turbo engine. It has a noise > >>that is making me very nervous.> >>When the engine is first started cold it makes a noise very similar to an > >>idler or tensioner with a bad bearing. Almost like a bad water pump bushing. > >>I have removed the serpentine belt that drives all the other units and the > >>noise remains. It sounds as though it may be coming from under the valve > >>cover. Any ideas before I tear the engine out for examination?> >
Timing chain maybe? Kind of a rattly, metallic noise, that changes> > directly with engine RPM? Or, is it a squealing or chattering noise, > > or how would you characterize it?> >
How many miles? Any remarkable service history?> >
Dave Hinz>
Add to the above (hence posting in addition to Dave's msg):>
Manual or auto gearbox?> What happens once the engine is warmed up?>
Could this be the tensioner for the serpentine belt?>
did you run the engine with the serpentine belt removed and you say the > noise remains?>
Charles>
What about hydraulic lifters pumping up?
--
Carl Robson
"Sorry Sir the meatballs are orf"
(The poster formerly known as Skodapilot)
http://www.bouncing­-czechs.com
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CarGuru > Saab > Saab noise 10 April 2005 17:49:32

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