Q: My car makes a winning noise when i start up the car that low external temparatures (below 10C). 2007 Ford Mondeo

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My mondeo mk4 (2007) 2.0 petrol makes a winning noise when i start up the car that low external temparatures (below 10C). There is no additional sound or symptom when turning the wheels. If I wait a few seconds the sound volume decreases substantially but is still noticable. When driving on gear the loud winning noise appears but drops to low when in neutral. The behavior is the same regardless of wheel rotation (for instance is rolling on neutral down a slope the noise is minimum entering the gear the noise is back. About 20' later depending on the weather conditions the noise when pressing the gas does disappears

My car has 140000 miles.
My car has a manual transmission.

Hi there - the noise you describe appears to be affected by engine speed as well as temperature. The noise could be from the power steering pump, alternator, water pump, or serpentine belt idler pulley - something that is engine-driven. The first task would be to check the power steering fluid reservoir. Given your mileage, it might be a good idea to have the power steering fluid flushed, and the filter replaced. I recommend a noise inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

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