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post #1 of 2 (permalink) Old 10-02-10, 07:45 AM Thread Starter
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Location: Tennessee
Age: 23
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Strange noise.

I have a 97 V6 Mustang and it has just started making this really odd hiss noise every time a give it any gas at all, but as soon as the car warms up the noise stops. I have checked all my fluids and everything is normal and from what I know not leaking. This just started when it started getting colder outside. Any help?

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post #2 of 2 (permalink) Old 10-02-10, 10:53 PM
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Re: Strange noise.

Hi, a hissing noise that goes away when the engine warms up is sometimes an exhaust manifold leak.

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