Poor output from the heater and/or engine overheating can be caused by air left in the cooling system after the cooling system has been serviced. Our technicians tell us the proper coolant fill procedure should be used to prevent this problem from occurring.
Poor Heat Output and/or Engine Overheating on Chrysler 300M
Average mileage: 100,666 (13,000–157,000)
21 people reported this problem
7 people shared problem details
2001 Chrysler 300M122,000Visitor
a/c works fine, no warm air any suggestions.
2001 Chrysler 300MVisitor
heating up engine water coming back threw resv drain hole
low heat output and the engine overheats. Replaced water pump, radiator, fans and still over heats
2004 Chrysler 300M150,000Visitor
Car begins to overheat but will level out if I slow down and keep the heat on full blast. There hasn't been any leaking that I have found. Antifreeze is full and fresh. Problem had yet to be solved
1999 Chrysler 300M157,000Visitor
i did the head gasket , replace water pump,radiator,thermostat,coolan sensor and the anteefreze start boiling after 5 minutes
purged cooling system to replace radiator. Since doing so engine overheats immediately upon starting. Temperature gauge on panel says in normal operating range. New gauge shows going over 200 degrees? Lower radiator hose doesnt get hot till 190 degrees. Replaced thermostat and original temp sensor. have not yet figured out what to do.
on our 2000 300 M ,,,How do I run a diagnosis check on my heat /ac system. I have not much heat...
Before refilling the coolant, make sure the air bleed valve is open. Follow the proper fill p...
ran internal diagnostic on heat.code came back 23.problem is no heat.what is code 23?thanks
This only happens when car sits over night. Longer car sits over night more tries it takes to s...
Car will not warm up unless moving engine will be warm and the second you move warm air comes o...