1991 300te overheating
08-15-2022, 02:11 AM
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W124
1991 300te overheating
Hey guys so trying to diagnose and solve my problem with your help. 300te m103 overheating from time to time. Expansion tank, cap, thermostat, viscous fan, coolant all changed and flushed including the radiator. Head was checked for gasket leak and passed with flying colors. The coolant was refilled and bled according to the manual. The car will run fine and hold temperature under 90c but out of nowhere will start climbing all the way up to 120c. If I turn the heat on full and hot, temperature will go back to normal. Eventually if I stop the car and turn it off, a great amount of my coolant will just dump out of the overflow bottle to the floor. What am I missing here from the puzzle? Can the water pump be the culprit and not circulate enough volume?
10-16-2022, 10:39 AM
#2
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Hey guys so trying to diagnose and solve my problem with your help. 300te m103 overheating from time to time. Expansion tank, cap, thermostat, viscous fan, coolant all changed and flushed including the radiator. Head was checked for gasket leak and passed with flying colors. The coolant was refilled and bled according to the manual. The car will run fine and hold temperature under 90c but out of nowhere will start climbing all the way up to 120c. If I turn the heat on full and hot, temperature will go back to normal. Eventually if I stop the car and turn it off, a great amount of my coolant will just dump out of the overflow bottle to the floor. What am I missing here from the puzzle? Can the water pump be the culprit and not circulate enough volume?
