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Vacuum leak 2004 ford explorer

Discussion in 'Stock 2002 - 2005 Explorers' started by top detailer, September 14, 2009.

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    1. top detailer

      top detailer New Member

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      Hello ford forums,

      I have a 2004 ford explorer and recently the service engine light(SEL) came on. also, my idling is very rough, but drives normal at regular speed. I took it to auto zone to get a code reading. I got P0174 code, which means leans bank 2. I've replaced the intake gaskets, cleaned MAF sensor and replaced an 02 sensor, the problem still exists. Can anyone tell me where the vacuum hoses are located? I believe I have a vacuum leak, I here a hissing noise when I take off.
       
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    3. EasyRhino

      EasyRhino Well-Known Member

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      Look all around the top of your engine. Most of those hoses are vacuum hoses.
       
    4. Fox Fader

      Fox Fader Active Member

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      Don't let that light hiss sound fool you, it's quite common.
       
    5. rocco123

      rocco123 Active Member

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      Look for a bad / soft rubber elbow fitting in vacuum line. Common problem with V8.
       

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