Just bought a 1990 mercedez 300 sel and realized it gets hot up to 120 after 10 min., but doesnt show signs of overheating? Do these cars just run hot??

Asked by Feb 24, 2015 at 11:19 PM about the 1990 Mercedes-Benz 300-Class 4 Dr 300SEL Sedan

Question type: General

2 Answers

140

120 is not too hot if it stays there but if it jumps to 140-145 thats a problem

1,565

These cars generally do NOT run hot; have your mechanic flush the system and put in the proper mixture first and replace the thermostat while at it. See if that solves the problem...if not move on to the temperature sending unit.....

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