Car Problem Reports

Jeep Grand Cherokee Check Engine Light Due to Failed Thermostat

Jeep Grand Cherokee Problem
7 Reports
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Model Years Affected: 2002, 2006, 2007, 2008, 2009, 2010

Engine Affected: 5.7L V8 HEMI


The thermostat may fail to close completely, causing the Check Engine Light to illuminate. This problem will prevent the engine from reaching normal operating temperature; a new thermostat should be installed.

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