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Discussion Starter #1
This has been going since the car was new and I've never had any issues, I'm just curious if anyone knows what it is.

After my commute home from work (never on the way to work) once I come to a complete stop in the driveway I get a fairly loud rattle almost like the sound of an air compressor coming from the rear of the car. It lasts 4-5 seconds then stops.

I wonder if this is some sort of vent/pump from the gas tank and if anybody else has this sound. Again, I haven't had any issue but if I'm the only one hearing this, obviously somethings not right.
 

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It has happened only twice for me so far. Doubt it's anything more than the evaporative emissions system doing something.
 

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Discussion Starter #4
I was pretty sure that's what it was. I'm more concerned with when its happening. It doesn't run after the car is off like some have reported. I'm afraid that its not doing its job whatever that may be.
 
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