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Old 08-20-2015, 10:35 AM   #15
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Originally Posted by Randyman1 View Post
The whistling sound is a vacuum leak, probably a hose cracked where it attaches to a port. This leak will affect your transmission's shift as it has a vacuum module for shifting. Find the vacuum leak, and the clunking will go away as the leak is causing the hard shifting. Randy
I'm with Randy on this one! if both issues started about the same time they're related.

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Old 08-20-2015, 12:36 PM   #16
Join Date: Aug 2015
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It may not be a vacuum leak. Most vacuum leaks get louder as you accelerate and disappear as the load on the engine decreases. They normally do not show up a certain speed. I am not rule ling it out, it just seems unlikely with the information given. Will love to here what you finally out the cause. Yes I do know how much Ford loves to use vacuum on their engines.
Not trying to start anything, just my opinion.
Very new to the form, have learned much reading the threads, so thanks.

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