One problem related to engine cooling system has been reported for the 2004 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mazda MAZDA6 based on all problems reported for the 2004 MAZDA6.
2004 Mazda 6 made a rattling sound in the front end. Upon inspection mechanic determined the radiator had a hole in it, and one fan blade broke off of the fan. ***** the hole in the radiator caused steam to come from under the hood. Although it was evident that the vehicle was overheating the temp gauge remained in the normal range and did not indicate overheating.