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Need help with some noises
Hey guys, I just started my 87 924S today after it sat for like 6 months, Once I got the batery juiced up it fired right up. Then I heard to noise that I have heard before but never had time to really look into it, So Im gonna ask you guys what you think it is. The first noise Sounds like a heat sheald rattle on a Cat, it only happens around 4,000 rpm and usualy on Decel. It sounds louder up front buy the engine then it does when lawing down buy the exhaust, I really hate the noise, Its a hight pitch rattle, ANY IDEAS??????
The second noise sound like a door creaking, This happens when the car is idealing and the noise speeds up when rpm increase but the noise gets quieter. I checked my belts none are loose, Could it be a pully??? something with the Timming Belt??? or maybe the altinator??? Any Ideas would be great. Thanx alot guys I really would like to get these noises out.
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1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
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02-23-2004, 06:18 PM
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Join Date: Nov 2003
Location: Calgary, AB
Posts: 1,883
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The first sound kind of sounds like a deteriorating catalytic converter, or perhaps a mount on it or the exhaust has cracked or come loose?
I didn't know there was a heat shield on the cat of non-turbo cars. Although, since it only happens at around 4000rpm on engine deceleration, it could be something else? The second one could be an idler pulley or tensioner. But it could also be the alternator, power steering pump or ac compressor. Check it out with a stethoscope to be sure.
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2010 Hyundai Elantra Touring, GLS 5 speed, Indigo Blue Metallic. 2.0L of Korean fury! Buy my parts! |
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02-24-2004, 06:21 AM
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One of the forgotten heat shields is the one covering the passenger engine mount. Since it is small and light it's harmonic is at higher rpms/frequencies. I found this out after doing my engine mounts.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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02-24-2004, 06:53 AM
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can I just remove It or would I be risking cooking the mount??
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1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
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02-24-2004, 01:28 PM
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I dont have a cat on my car so thats not the problem
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1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
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02-24-2004, 05:28 PM
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1987 Porsche 924S 2.5 modified
1983 Porsche 944 2.5 liter
