Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

whistling when turned on

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Old Jul 23, 2012 | 11:39 AM
  #1  
redjeep1991's Avatar
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Joined: Jul 2012
Posts: 92
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From: Connecticut
Year: 1991
Model: Cherokee
Engine: beefed up 4.0 HO
Default whistling when turned on

My 91 xj makes a really load whistle when it starts and idles really high. The idle eventually dies down to a little higher then normal but that mite be because of the throttle body. My question is what could be causing a load whistling
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Old Jul 23, 2012 | 11:42 AM
  #2  
Firestorm500's Avatar
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Joined: Apr 2009
Posts: 4,734
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Default

vacuum leak
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