95 SSEi - Strange "rattling" sound - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-13-2006, 01:19 PM   #1
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Default 95 SSEi - Strange "rattling" sound

This was happening before I pulleyed and I assumed it might have been a plug wire slapping against the fan supports but it wasn't. Only when I accelerate from a dead stop, for the first second or two I hear a sound almost like two pieces of plastic smacking against one another. It goes away fast, but it happens every time I accelerate.

Boosty has heard it as well and suggested a possible exhaust manifold leak. The thing I don't understand is why I'd only hear it in those first couple of seconds. I'm sure its not just the engine noise drowning it as I can literally hear it fade away. I've checked for the obvious -- loose cables, loose fittings, and I can't seem to find anything.

Any thoughts?
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Old 04-13-2006, 01:20 PM   #2
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does it sound like its coming from the passenger foot well?
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Old 04-13-2006, 01:22 PM   #3
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Humm.. I think its definately coming from the passenger side.

I'm laid up with this chest infection and haven't driven the car in a day or two.
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Old 04-13-2006, 01:33 PM   #4
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me and nate had/have the same problem in our 95 ssei... i could not figure it out and neither could he
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Old 04-13-2006, 01:59 PM   #5
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Quote:
Originally Posted by harofreak00
me and nate had/have the same problem in our 95 ssei... i could not figure it out and neither could he

It'* definately something that occured. It started around 3-4 weks ago.
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Old 04-13-2006, 02:37 PM   #6
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The couple times I heard it..I wouldn't classify it as passenger side. It wasn't an obvious side or the other.

Morty.. start it up and lift the hood...rev a couple times..listen close..you'll find it. An exhaust leak would show up as KR very quickly.
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Old 04-13-2006, 02:41 PM   #7
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I dunno, my noise sounds like it'* almost the engine hitting the firewall and slowly going away when the torque levels allow it to drop back down, it only does it when I floor the car.....I'm thinking for me it'* motor mounts,

For Morty, seems to almost be a pulley?
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Old 04-13-2006, 02:43 PM   #8
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Not a pulley. I've listened to them.

HB is a possiibliity I suppose.
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Old 04-13-2006, 02:44 PM   #9
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The rubber separating in there could sound like plastic, but that would also affect the driveability of the car too...Or atleast the idle.
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Old 04-13-2006, 03:05 PM   #10
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I'd really classify it as exhaust leak, aka crack in manifold and very common in your year or a pinging. Only heard it a couple times.

My suggestion is not to floor much until you can determine and correct the cause of the sound. As I remember the only time we heard it was when you mashed it.
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