The radiator cap could be the cause of coolant reservoir overflow or backup. Have the cap checked to see if it is bad.
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∙ 2014-06-25 17:57:06The car is overheating. Possibly the thermostat is stuck closed. Have it checked by a mechanic.
If you mean engine coolant is getting into the car, the heater core is leaking coolant causing the coolant level to drop and that causes the engine to over heat.
Lack of coolant, faulty thermostat, radiator fan not working...
Coolant deficiencies, mostly. But they also wear out over time.
That'll be your coolant, and there could be a number of things causing it... a blown head gasket will do it... a coolant leak where the coolant leaks onto a hot engine block will do it... a faulty radiator cap which opens too easily can cause this.... excess coolant causing the system to overpressurize and have to relive frequently will, as well.
I had this problem ....Head Gasket or radiator cap
Heat from the engine causes liquid to expand. It used to overflow onto the ground if it caused enough pressure to open the radiator cap. The overflow tanks were installed to automatically catch and return the coolant to the cooling system.
It could be a couple of things. The coolant system could be over full. There could be a clog in the radiator. Or possibly the thermostat but not likely. also, the ford coolant tank is pressure sealed, if the cap to the tank has a defective seal, it WILL overflow when you stop your car, or whenever the pressure builds
the reason why the coolant is spilling up over the reservoir is because the thermostat needs to be replaced because when the engine needs water the thermostat heats up from the engine and causes the springs to expant which opens a seal to allow the water throughout the engine i just realpaced the thermostat in my volkswagen
It sounds like the tank has a leak.
Defective radiator caps or tubes
There are a couple of things that can cause oil to get into your coolant reservoir. A blown head gasket or a broken piston ring are the most common causes.
Radiator pressure is caused by coolant expanding as it heats. The radiator cap allows that pressure to build until it reaches a certain point (determined by the manufacturer which is why it's important to use a proper cap for the vehicle) then a spring compresses and coolant is allowed past the cap seal. The coolant flows through a hose to the overflow tank. Now here's the magic part. Back in the day, before reservoir tanks, that excess coolant just fell to the ground, wasted. Now, with the tank, the liquid is actually drawn back into the radiator as the engine (and coolant) cool. The result, an always full radiator Cheers
I'm having to guess it's the low coolant light? Possible coolant switch in the overflow bottle is dirty or defective., Is it low on coolant? Possible wiring issue to sensor.
Have a plumber snake out the drain. You have some sort of blockage.
if there is oil in the coolant system it could be a crack in the intake, a ruined intake gasket, a cracked cylinder head
The car is overheating. Possibly the thermostat is stuck closed. Have it checked by a mechanic.