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Several possibilities - from easiest to most expensive: Faulty or inoperable radiator cooling fan - causing overheating. Faulty thermostat - causing overheating. Water pump failure - causing overheating. Blown head gasket - allowing exhaust gasses to escape into the cooling system and expelling the coolant.
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What causes coolant reservoir overflow or backup?
The radiator cap could be the cause of coolant reservoir overflow or backup. Have the cap checked to see if it is bad.
Why are you losing coolant out of your overflow?
There could be several reasons. Under normal operation, the vehicle will experience this as the coolant heats up and expands into the over flow. A bad water pump, low level of coolant, as well as a clogged radiator could also cause this problem.
What if you pour coolant into the overflow and the coolant instantly pours on to the ground what could be wrong?
A leak. You need to see where it is coming from.
If the dashboard temp gauge on a 1994 Honda Accord stopped moving what could be the problem and how do you fix it?
low coolant could cause this . without some backround ?
What could be wrong is your 1997 caddilac is overheating and spilling out of overflow container?
Could be bad thermostat or plugged coolant line
What causes a coolant reservoir to overflow in a 2001 Chevy Malibu during operation?
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
When coolant coming out of 1999 alero from overflow and leaking water pump replaced water pump but still comes out of overflow could it be thermostat?
Could be thermostat not opening causing a back pressure
Coolant leaking from part on passenger fender wall of 1999 Chevy Astro. need part name?
It could be the coolant overflow tank that is leaking.
There is rust color in your overflow engine coolant container of your ford windstar what could this be?
Transmission fluid, if you have a bad radiator.
Could the temp coolant sensor cause the truck to run cold?
The coolant sensor moniters the coolant temperature. A faulty thermostat could cause the engine to run cool.
What could be the hissing sound that comes from under the car when the engine is turned off after a drive?
Could be a leak in a radiator hose, or radiator. ==Answer 2, Another Possibility== It could also be the radiator cap pressure relief valve action which vents coolant and/or coolant vapor to the coolant overflow reservoir/tank when steam is created in the coolant passages in the engine block. When the engine is shut off, the residual heat in the block can cause the additional pressure and/or steam.j3h.
My 97 Pontiac Transport low coolant light is constantly flashing even though the radiator is full of antifreeze what could cause this condition?
The coolant sensor is in the overflow tank, make sure it is full to the cold line. If it still stays on the level sensor might need replacing
