Question about 2004 Jeep Grand Cherokee

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Engine light on code po442 - 2004 Jeep Grand Cherokee

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Check the vacuum lines going to the EVAP canister. I had the same code on my 2004 Jeep Grand Cherokee and my issue was where the rubber lines meet the steel lines. The 3/8 diameter hose was dry rotted. Location of my repair is left hand side of vehicle above the back tire.

Posted on Mar 29, 2013

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Problem with one of the oxagen sensors,

Posted on Nov 05, 2012

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