Noise While Cold

Old 09-14-2013, 08:27 AM
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Default Noise While Cold

Not really a problem, just a question. I start the Allroad and it's all good. There's a noise that goes away after ~2 minutes of driving at low speed. It's nothing major, just that the engine gets noticeably quieter.

Does anybody have any ideas what this is? Just curious.
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Old 11-02-2013, 07:17 PM
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Default Hmmmm

Does it start right away as the engine turns over? Does it increase in intensity with accelerator pedal travel? Do a search on SAIP (Secondary air injection pump) and you should be able to find a video with some sounds to compare.
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