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A bad water pump or thermostat can cause an engine to overheat. A plugged (clogged) radiator or heater core may also cause an engine to overheat.
A leaking heater core will cause the engine to overheat because the coolant is leaking out.
Not necessarily. It depends on what you mean by a bad heater core. The core will either be leaking or stopped up. If it is leaking, then it can cause the engine to overheat and the only fix is to replace it. A clogged or plugged heater core can sometimes be fixed by flushing it. You can also temporarily bypass the heater core until you can get it fixed. Just connect the inlet & outlet heater hoses together.
If the converter is partially clogged it can cause the engine to overheat which can cause serious problems. Other than that if will not harm the engine.
Could be several things, is there coolant in the overflow tank? **Don't open cap when hot** does your heat work? your heater core might be clogged? do your fans turn on to cool the engine? Do you have oil? & what does it smell like ? burnt ? or just like old oil I had this problem on a 98 Jeep, it was a clogged heater core, & rusty coolant .... Matt
It could be the radiator is clogged. The thermostat could be bad (prevents the coolant from circulating from radiator to engine block)
have your radiator cleaned and replace your thermostate, clogged radiators and sticky thermostats can cause your engine to overheat under load.
The fuel filter will get clogged and the engine will either run poorly or not at all. This can also cause the fuel pump to overheat and self destruct. Replace the fuel filter if you suspect it is clogged.
not likely as the heater fan only controls the air in the cabin, maybe the radiator fan has gone out too?
If your heater core is LEAKING engine coolant so that your engine coolant level drops too low or the engine coolant is lost completely and causes your engine to overheat then your engine can be damaged beside the mess the leaking coolant makes inside your vehicle ( you might be able to just temporarily bypass the heater core so that no engine coolant is flowing through the heater core )
If the fuel filter is clogged, it will act like it is running out of fuel. It can also cause the fuel pump to fail. The clogged filter will overheat the pump and destroy it.
Hose going from engine to heater core may have burst. Check all your coolant hoses for leaks.