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Unread 05-17-2010, 03:14 PM   #1
rcincorporated
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2004 TJ Wrangler 
 
Join Date: Apr 2010
Location: Ewa Beach, Hawaii, Hawaii
Posts: 11
Hissing Sound

There's a hissing sound when I first roll out in the morning. When the clutch is pushed in mainly but also while idling...not while in gear though....sounds like air rushing out of something....goes away after a couple miles.....any ideas??

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Unread 05-17-2010, 03:45 PM   #2
Brown Dog
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1991 YJ Wrangler 
 
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Location: Queen Creek, Arizona
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vacuum leak?
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Unread 05-17-2010, 04:02 PM   #3
E5E
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1992 YJ Wrangler 
 
Join Date: Nov 2009
Location: Texas
Posts: 91
Might need to call this guy.



Or it could just be a vacuum leak.
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Unread 07-30-2010, 10:13 AM   #4
rcincorporated
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2004 TJ Wrangler 
 
Join Date: Apr 2010
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Still can't isolate...where would a vacuum leak be coming from???
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Unread 07-30-2010, 10:14 AM   #5
rcincorporated
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2004 TJ Wrangler 
 
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Where you at in Texas? I'm from McAllen.
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Unread 07-30-2010, 10:17 AM   #6
Jims-87YJ
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1987 YJ Wrangler 
 
Join Date: May 2010
Location: Lansdale, Pa 19446, PA
Posts: 681
I had the same issue several months ago, I found mine to be the Vacuum line from the rear of the manifold that feeds the HVAC controls on the dash. A simple wire tie fixed it so it would not pop off.
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My build thread: [url]http://www.jeepforum.com/forum/f12/my-very-slow-87-yj-build-thread-1137667/[/url]
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