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.
Average mileage: 162,876 (111,001–207,980)
Engines affected: 3.7L V6, 4.7L V8, 5.7L V8 HEMI, 5.9L V8
18 people reported this problem