Sounds like a lawnmower

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random_monkey
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Sounds like a lawnmower

Post by random_monkey » Thu Nov 30, 2006 9:44 am

Blah!

So, my car is all running fine, I come off a roundabout and rev it a little high in 3rd, and it goes "Pkt!"
Now it sounds like a lawnmower, putting away whenever I rev, (sounds fine at idle)

It does have a split in the middle exhaust, but it sounds more like it's coming from the engine, which I checked for any disconnected cables or ... holes... or /anything/ out of the ordinary, but couldn't find anything.

I am at work though, and I've only given it a quick 10 second glance over. And because it happened right toward the end of the journey, I'm a bit worried about driving it back in its current state, for fear of doing more damage...

Any bright ideas party people?

[edit]

Just had a quick look. Can't see anything, but sounds like it's coming from the manifold area - so unless there's something that can pop off around there, I guess it'd be something split.

Which isn't good.

[/edit]
rm
[img]http://img394.imageshack.us/img394/5650/wedgiepixbf7.png[/img]
Wedgie: [b]1989 480 ES[/b] - Red (Just)

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random_monkey
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Post by random_monkey » Wed Dec 06, 2006 2:29 pm

OK!

Got the car back from the garage today. Had the front and middle exhaust sections replaced, 'cos they was dicked.

All is fine now, 'cept there's something vibrating that wasn't vibrating before and it's doing my fucking nut in...

Still, "no vibrations" and "480" hardly ever appear in the same sentence together, so I'm chuffed to be back on the road again :D
rm
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Wedgie: [b]1989 480 ES[/b] - Red (Just)

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haz@nocturnal_development
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Post by haz@nocturnal_development » Thu Dec 07, 2006 1:01 am

its probably the exhaust rubbing against the car somewhere, or a faulty engine mount which may have caused the exhaust to go last time

haz :)
reanualt 5 campus, Volvo turbo conversion, hybrid T28, -31 actautor, external oil cooler, THS intercooler, rear radiator, large throttle, Adaptronic ECU, cossie blue injectors. results recorded '06 (21 psi 228bhp/229lbs),(23psi 12.6 @108mph)

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crispy-d
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Post by crispy-d » Thu Dec 07, 2006 1:58 am

The exhaust does rub (smash up and down) against that metal U-shaped bar over which it loops. I think I wrapped some cable ties round the rubber hangers that suspended the box to solve that issue.

'Course it might not be that! As Haz says - you sure it's not an engine mount! How vicious are these vibrations?
Volvo 340 GL 1.7 :) - Nice (RWD missed) - sold
Volvo 460 SI Turbo ('Rich Mod' / 2.5" Longlife SS exhaust / 710N CBV / Cold Air Intake) - (Turbo missed) - sold
Volvo S90 3.0 CD 24v (RWD back again! LOVING the straight six :) ) - is 16mpg that bad...? - sold
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random_monkey
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Post by random_monkey » Thu Dec 07, 2006 9:40 am

They're not vicious at all
It's just when I reach 90 and it starts making this high pitched buzz sound that fluctuates in volume (Like a sin wave)

It's coming from the rear of the car so I'm guessing it is the exhaust, I'll still have a goose at the engine mounts though
Cheers guys ^_^
rm
[img]http://img394.imageshack.us/img394/5650/wedgiepixbf7.png[/img]
Wedgie: [b]1989 480 ES[/b] - Red (Just)

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