Question about 2001 Subaru Impreza

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Cooling system my radiator cracked on the top tank .what cauld be the cause

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Some times they get old and dry and then they crack but many problems related with leaks or corrotion are caused by lock of service on the antifreeze i recomend to service the antifreeze every 50k miles with a solution of 50/50 antifreeze waht means 50% coolant and 50% water they sell it allready diluted or you can mix it with destilated water

Posted on Jun 01, 2008


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My car overheats, new thermostat, Radiator flushed out Coolant recovery tank replaced, still overheats

If the water pump is moving the coolant,then you may have a bad head gasket allowing combustion gas into the cooling system.Fill the cooling system right to the top and without the cap on watch for a constant flow of bubbles coming to the top.Bubbles?=bad head gasket or a crack.

Sep 03, 2017 | Cars & Trucks

1 Answer

Coolant leaking out of reservoir and radiator. I have to fill tank once a week. The radiator seems to be full when checked cold.

replace the faulty reservoir or radiator
what is happening is that the radiator cap is not raising the pressure in the cooling system because of a leak in the system
the excess water from heating is being pushed out probably onto the ground through the leak
when the cooling system cools down , water is being drawn back into the radiator
probably find a crack in the radiator tank that opens under pressure but seal off as the pressure is lost

Oct 09, 2015 | 2009 Jeep Grand Cherokee

1 Answer

Excessive water pressure in radiator causing overflow tank to overflow in 1997 7.3 powerstroke

have a compression test done as that will most likely be a blown head gasket or cracked head allowing combustion pressure into the cooling system. A quick check is to remove the radiator cap and fill right to the top . Run the engine and if you see small bubbles in the water or it tends to belch out then it will be the gasket of cracked.

Mar 18, 2014 | 1995 Subaru Legacy

1 Answer

Water keeps coming out of my resavor when it starts to heat up

from what you describe either a bad radiator cap, or a leak in the small hose going to the resovoir,or the line within the resovoir tank is to short or missing,this is whats happening,engine warms up to a point that the cooling system is building pressure,the radiator cap has a set presure release to it you might see the figure direcly on top of the radiator cap, 12-14 lbs rated. it usualy will read something like that, so as that warming engine builds pressure in the cooling system it will eventualy surpass the rating of the radiator cap ,and out it goes and flows in that small line to the overflow resovoir. now when the engine cools back down it now will create a vaccum and should draw that water back from the resovoir to the radiator,but if the hose or hardline that is usualy integral within the resovoir is bad cracked or missing, it would be the same as trying to drink a soda through a straw,but the straw is not inserted below the surface of liquid.or if the straw was cracked, no fluid can be vaccumed up through the straw, the resovoir works on that same principle, it must have a good unobstructed line from radiator to the resovoir,and the line inside the resovoir should go nearly to the bottom of the tank, so the water can be vaccume syphoned out just as drinking a soda with a check to be sure the line is all good no obstructions,no cracks, and that there is a line that continues within the resovoir tank almost to the bottom as well and it is in good shape as well. last check that radiator cap to make sure the rubber as well the upper gasket portion are still there and not cracked/dryrotted. if all that is in good working order then your radiator should be able to recover the water back.just like sippin a soda through a good straw

Jul 05, 2012 | Chevrolet Malibu Cars & Trucks

2 Answers

I found some oil in the water of the rediator , and the mechanical change the gasket and still the same problem

You may be looking at OLD TRANSMISSION FLUID that has turned brown. This problem is normally associated with the Transmission Cooling tank leaking into the cooling system, there is not enough information in your write up to be 100 percent sure but I have had this same problem with a 328i

If it is OIL, then you are looking at a blown head gasket or a crack in the head or block. There are a few other ways to get oil in the system but I would start with troubleshooting the Radiator in a Tank and then see if there is air bubbles coming out of the Transmission fittings. This is going to be your first clue your radiator tank is leaking.

Good luck

May 29, 2011 | BMW 750 Cars & Trucks

2 Answers

I have a 2000 BMW 328i the tank along side the radiator has cracked and there is oil in the radiator fluid. Could this be from the cracked tank?

Likely the cause is the opposite of what you are thinking. Oil in the radiator (engine oil) is caused by a blown cylinder head gasket. When that gasket fails it can overpressurize the cooling system by permitting compression from the pistons to enter. (cooling system pressure rarely is above 20psi...compression pressure is more like 150psi. That will cause the radiator tank to burst)

Dec 03, 2010 | 2007 BMW 335i Coupe

1 Answer

I have a honda accord 1991 car is overheating engine light came on once and car doesnt overheat when i have the heater on do u think its a fan i changed the thermostat and flushed the radiator

The fan is electric. The fact that turning on the heater helps is a good indicator that the cooling system isn't sufficient but there are a lot of things to try.

The fan shouldn't come on very much, but it is easy to see if it is working OK. When the temperature gets above where it should be, open the hood and see if the fan is running. If it is, it is not the fan or the thermostatic fan switch. If it is not, the most likely cause is the fan-switch that is screwed into the bottom of the radiator. be carful when removing and replacing as the place they screw into the radiator may be plastic.

Assuming the fan does come on when the temperature is going up, the most likely cause is a radiator with poor flow,

be sure to check the simple things first. Is the coolant recovery tank at the proper level?

Are you loosing any coolant?

If coolant keeps disappearing, you either have a leak in the radiator or hoses or heater core or ... you have a bad head gasket or cracked head. A compression test will tell you if it is one these "bad" things, but do that last. A cooling system pressure test will tell you if you have a system leak, but not where it is. Do that after you check and do all the simple things, and if you are not losing any coolant, and the recovery tank is staying at the proper level, a leak is less likely. Sometimes with a blown head gasket, engine compression will force air into the cooling system. If that is what is going on, you should be able to open the coolant recovery tank when the engine is running but leave the hose that is connected to the lid down in the recovery tank coolant. Look for air bubles coming from the bottom of the hose or oil in the coolant recovery tank. If you see either of these, then head gasket or cracked head is likely.

If the fan is working and the coolant level in the recovery tank is staying where it should, the most likely cause is a plugged up radiator. Even flushing with a radiator flush may not help, and the radiator will likely need to be replaced. Replacing the radiator is not a very big job and after-market radiators are quite reasonable for a 91 civic from most autoparts stores or on-line, but if you haven't done one before, get someone to help you or at least get a repair manual.

When you flushed the radiator, did you bleed the cooling system? There is a bleed valve located near the front of the engine and toward the passenger side. It opens with a 10 mm. wrench. The valve is located at the top of the cooling system and it is to get all the trapped air out of the system after it has been opened or flushed. It helps to raise the front wheel on the passenger side, then open the valve and let all the air out. When you get a solid stream of antifreeze with no air, the system is bled.

The most important thing is don't just start replacing things. Find out what's wrong, then fix that. Otherwise you could spend a lot of money and still have the problem.

I hope it is something cheap and simple - it is more often than not.

Oct 01, 2010 | 1991 Honda Accord

1 Answer

Where do you fill the system with coolant? I had the thermostat housing crack (poor design) and have the replacement on order but didn't see a radiator cap . . .

If you don't have a cap on the radiator you fill the system through the reservoir tank (has a screw on top).
Keep the heat on full high and add coolant as needed while it's warming up. Check reservoir level again and top off after it cools back down.

Jun 08, 2010 | 2004 Chevrolet Aveo

2 Answers

Oil in radiator, car did not overheat

The oil cooler tank on the side of the radiator has cracked and allowed oil into the cooling system. Replace the radiator and you will need to flush the cooling system A LOT. and be careful driving it for a while, the mixture can take a long time to clear out of the head which can cause it to overheat.

Apr 22, 2009 | Volvo S60 Cars & Trucks

1 Answer

Overflow resevior for the radiator.

overflow/header tank? for cooling system YES most problems of cracking are either lack of anti freeze in system? or excesspressure of cooling system o/heat? causes expansion and possible weak joint? will crack ? or an impact / leverage to tank during work under hood ?

Nov 04, 2008 | 1999 Dodge Neon

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