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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 04-08-2005, 10:50 AM   #1 (permalink)
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When i turn the engine off and the car is standing, there is a strange tin like sound coming from under the car. It sounds like high pitched "tick". Almost like droping a small bearing on a tin roof.

This seems to happen when the car is cooling down but sometimes you hear it when you start the ignition.

Any thoughts?
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Old 04-08-2005, 11:07 AM   #2 (permalink)
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When you say under the car do you mean under the floor board like around the transmission or do you mean under the hood? Is teh noise repetitive? What about when the car is moving? When the car is accelerating?
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Old 04-08-2005, 11:07 AM   #3 (permalink)
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Yeah that happened with my bro's car
on his it was the cover plate on his cat converter kinda rattlin
so it's proly something like that
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Old 04-08-2005, 02:13 PM   #4 (permalink)
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Quote:
Originally posted by thekid@Apr 8 2005, 10:07 AM
When you say under the car do you mean under the floor board like around the transmission or do you mean under the hood? Is teh noise repetitive? What about when the car is moving? When the car is accelerating?
[snapback]328347[/snapback]
Under the floor board. Sounds like from the exhaust system directly under the drivers seat. It also is more consistent when the car is hot or cooling off.
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Old 04-08-2005, 02:16 PM   #5 (permalink)
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Originally posted by BMW-ATI@Apr 8 2005, 10:07 AM
Yeah that happened with my bro's car
on his it was the cover plate on his cat converter kinda rattlin
so it's proly something like that
[snapback]328348[/snapback]
Thanks - that is in the same region that the sound is coming from. I will have a look. Because it occurs when the car is hot, it could be something heating up and then making the noise when cooling down.

Much Appreciated.
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Old 04-08-2005, 02:40 PM   #6 (permalink)
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I think you are refering to what I call the "metallic drip noise". It's a constant "tick tick tick" right after turning the ignition off. It is just the exhaust mainfold cooling down. I am pretty sure its normal
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Old 04-09-2005, 04:37 AM   #7 (permalink)
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Originally posted by 93 325i@Apr 8 2005, 01:40 PM
I think you are refering to what I call the "metallic drip noise". It's a constant "tick tick tick" right after turning the ignition off. It is just the exhaust mainfold cooling down. I am pretty sure its normal
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Perfect description!
Thanks for the help.
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