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Old 12-06-2017, 03:00 PM
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04MRADR 04MRADR is offline

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Cold Weather Whining Sound at Start Up

Can anyone suggest to me what this may be ? I live in the Northeast where winters can get pretty cold. At the end of last winter I noticed every few days when the temperature was say mid 40s or below when I started the Marauder (sits outside by the way) a loud wining sound would come from under the hood. After the car ran for about 2-3 minutes it would stop. Once the weather is in the upper 40s or above everything is fine. So when winter ended and throughout the spring and summer and fall until a few days ago no problem. Everything was normal. Had it again this morning since temperature was low 40s. But on some cold mornings its okay. Any idea on what this could be ? Appreciate any comebacks.
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Old 12-06-2017, 03:37 PM
TrilogyMarauder TrilogyMarauder is offline

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Rear air suspension system?
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Old 12-06-2017, 05:16 PM
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Could be the power steering pump whining until the fluid gets warmed up a bit.
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Old 12-06-2017, 06:04 PM
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RF Overlord RF Overlord is offline
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What JimP said ^^^ Try rocking the steering wheel a few times and see if the sound changes.

Another possibility is the FEAD belt.
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Old 12-06-2017, 07:30 PM
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fastblackmerc fastblackmerc is offline
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Either P/S pump or serpentine belt.
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Old 12-06-2017, 09:41 PM
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+1 on the P/S pump or the Serpentine belt.
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Old 12-07-2017, 05:29 AM
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My idler pulley used to whine at startup (in South Jersey).
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