V8 S5 noise in engine bay - Audi A5 Forum & Audi S5 Forum
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post #1 of 2 Old 11th October 2017, 04:49 AM Thread Starter
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V8 S5 noise in engine bay

Hey guys, checking in here to see if anyone can identify the noise that my car is making. It's on the drivers side of the motor near the coolant tank around the exhaust manifold. Other than that I can't see down there. It's a grinding noise that gets faster when the motor revs so i'm thinking it's the shaft driven AC compressor but it makes the noise with the AC is on or off.

Here's the vid: https://youtu.be/Bj6BjUQCOf0

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post #2 of 2 Old 25th October 2017, 03:30 PM
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Doesn't sound like a grinding noise to me unless that's something else. Is it throwing any codes or are you losing any coolant or oil? Is your A/C working? If you're not leaking anything then your A/C compressor might be shot. Check the metal lines that run to it and see if they're hot or cold.
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