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Strange "humming' noise under hood- 1994 960. 900

Hello- I was pulling codes out of the test module the other day on my 94 960 and noticed (because the key was in the on position) there was a humming noise which seemed to be coming from the air intake hose- just before the throttle body. Any thoughts? It kinda sounded like an electric motor. Thanks.






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New Strange &quot;humming' noise under hood- 1994 960. [900]
posted by  1990_740_16V  on Mon Nov 9 08:02 CST 2009 >


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