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#1
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noise from under the hood after drive
There is a square box, with a bunch of tubes on it, behind the DEF filler. Does anyone know what that box is used for? I feel the noise from that box or that area. Not sure if this noise represent something is about to fail or it's normal. The noise goes away after 1 or 2 mins. Here is the video I took just after driving, You can hear oil is dropping back to the pan. The noise goes away close to the end of video. https://www.youtube.com/watch?v=Wg3S-pB-5CM |
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#2
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Turbos cooling. Normal.
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#3
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That is the active tank and the transfer pump is filling it up from the passive tank.Normal vehicle function,nothing to worry about.
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#4
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Thanks guys, I believe bawareca's answer is correct. I know my car's passive tank is empty because I got 1000miles no start before and I refilled active tank only.
After I filled 2L in the active tank again, there is no more pump noise coming out any more for now. |
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