Question about 1993 Volvo 940

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I am adding coolant to my car every day and keeps running dry. i have not seen anything leaking underneath the car. where is the coolant going?

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In the motor, or burning in combustion chamber, see if oil level is rising or if excessive water or white smoke out of exhaust,  

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1 Answer

Coolant reservoir empty when sitting overnight


You must have a coolant leak. If there are no signs of a leak, you may have a gasket on the engine that has gone bad, and the coolant is being pushed out the exhaust system. The coolant expands when hot and cools when the engine cools. During the cooling stage the cooling system creates a suction on the coolant in the reservoir and draws enough coolant back into the system to keep it full. Apparently you are loosing enough coolant somewhere that the reservoir can not fill the system before going dry.

Jul 26, 2015 | 1998 Ford Windstar

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Loses water from resevoir but not from radiator


So the level keeps dropping in the reservoir? If you have to keep adding coolant to the reservoir, the system is leaking or losing coolant somewhere. Have the system pressure tested to find the leak. Is the reservoir itself leaking? When the level gets low enough, first the reservoir will go dry, then the radiator level will start to drop.
Here's how the reservoir works: coolant is under pressure from the radiator cap seal. As coolant heats up from hot engine, it expands, and pressure forces the radiator cap seal up, coolant is forced into the reservoir-remember the hot mark on the reservoir? When car is shut off, coolant contracts, creating a vacuum in top of radiator. This vacuum works to suction coolant back from reservoir into the radiator, keeping the radiator topped up, and coolant should now be at the lower cold mark on the reservoir. It is a closed, sealed system. The only loss of coolant will be a very small amount of evaporation from the reservoir. If coolant level keeps dropping, there is a leak somewhere.

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Hi Heather,it may be your water pump leaking or a radiator hose.Keep water in it,keep a jug in the vehicle,if it's the water pump,then it will leak when it is parked,keep the over flow container full.

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1 Answer

Excessive coolant/water


The only way to find out if it has a leak is to have it pressure tested. This will determine if it is holding up the pressure. If it can't hold the pressure then it has a leak somewhere that is not easily seen. Logic tells you that if its loosing coolant then it has to go somewhere. Sometimes the leaks are coming from a worn out cap. When the pressure inside increase, the water comes out slowly enough for you not to notice anything. Also check the small hoses that go to the throttle body. and the heater hoses. If the car has a tendency to run a little hot, don't take that for granted, because that could be the reason why you are loosing coolant. The sooner you find out the problem the better, because you know this is just the first stage, and if left alone will get worse over time untill it becaomes a major problem. Glad you posted it.

Nov 11, 2009 | 2000 Chevrolet Blazer

1 Answer

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look into the coolant recovery bottle with engine running and make sure hose i end is submerged. If you see bubbles, you have a head gasket leaking. How does the car run on start up?? a little rough at first?

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4 Answers

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Over filling the Coolant will not hurt anything. Is it getting hot at all?????? If So, You may have a Bad Thermostat. or even Waterpump. Let me know! Please Rate My Response! Thanks!

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1 Answer

Lost coolant flude and found leak trainmission flude


ok this needs to go in to a mechanic now this will not cost more than $100 around $40 maby to get it fix depending on what is leaking

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