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Whistle sound


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Gungho
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Oct 18, 2009, 5:01 PM

Post #1 of 8 (1089 views)
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2006 Mustang 12k automatic

I am hearing a whistling sound when accelerating. It only seems to happen in second gear. I checked the intake and all is tight. Throttle body is tight as well. If I give it a lot of gas, from a stop, 1st gear is ok, 2nd gear loud whistle until 3rd gear shift. also there is a slight delay in shifting from 2nd to third, it kinda hangs then lunges into 3rd.


Hammer Time
Ultimate Carjunky / Moderator


Oct 18, 2009, 6:02 PM

Post #2 of 8 (1085 views)
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Re: Whistle sound [In reply to] Sign In

Sounds like a vacuum leak of some kind. It could just as easily be under the dash if one of the mode door vacuum lines is leaking.

Fords have a lot of problems with the rubber connectors for the larger vacvuum lines like the PCV where it attaches to the manifold. They suck a hole right through the rubber.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Gungho
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Oct 20, 2009, 11:49 AM

Post #3 of 8 (1067 views)
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Took it to the dealer and they concluded that it is planetary gear whine in the trans. They said it was normal for Fords. If you guys agree then all is OK.


Hammer Time
Ultimate Carjunky / Moderator


Oct 20, 2009, 11:53 AM

Post #4 of 8 (1065 views)
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Re: Whistle sound [In reply to] Sign In

I guess that would depend on just how loud the noise is. You can write off a little bit of noise as normal but if it's real excessive, then something is wrong.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Gungho
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Oct 20, 2009, 1:22 PM

Post #5 of 8 (1057 views)
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Re: Whistle sound [In reply to] Sign In

Its not too loud although it can from time to time seem louder and a bit annoying. Kinda sounds like a turbo. It started to whistle about 11k miles so if I keep the car I have to listen to it for 100k more miles!


Hammer Time
Ultimate Carjunky / Moderator


Oct 20, 2009, 1:32 PM

Post #6 of 8 (1053 views)
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If your unsure if they are correct, take it to a trans specialist and get a second opinion.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Gungho
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Oct 21, 2009, 10:28 PM

Post #7 of 8 (1045 views)
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Re: Whistle sound [In reply to] Sign In

Good idea, I will ask around for some recomendations for a good mechanic. I just realized that this whistle is louder when its colder outside, could this confirm the dealers diagnosis?


Hammer Time
Ultimate Carjunky / Moderator


Oct 21, 2009, 10:32 PM

Post #8 of 8 (1042 views)
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The dealer could be correct about their diagnosis but wrong about it being normal. I can't confirm anything. Just get a second opinion. That's the only way to find out.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





Whistle sound


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