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
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Recently purchased at a local used car dealership in Wenatchee Wa. Check engine light came on after driving approximately 100 miles.
Had replaced thermostat with new Gates model within previous six months and 4,000 miles.