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There are a couple of things that make noise that could be described as a whine. The fuel pump is one and there is some other under the hood electronic thing that makes a high frequency whine. I can hear it when I have the hood open with the ignition turned on. With the engine running it's difficult to hear it. I think it's all normal.
 

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is it normal for the engine to make a slight whine noise right before it fires up? its right before the fan turns on.
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thanks
Can you provide a little more info.... Are you talking about after you turn the key to ON, but before you turn it to START? or, immediately after it starts but before you hear the fan roar? Or something else?

DEWFPO
 
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