Question about 1996 Geo Prizm

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Car has a new radiator and cap, but when i shut the vehicle off it leaks out the coolant reservoir.

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Are you sure the reservoir is not cracked or? because as you drive the engine coolant expands as you drive and collects in the reservoir, then after you shut the engine down the coolant cools and contracts creating a vacumn and it goes back to the radiator as needed. If the reservoir is cracked it will after you shut it off as the coolant will be higher.

Posted on Oct 13, 2010

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06 pt cruiser turbo replaced radiator test drove and coolant was leaking found black wire to fan not connected radiator won't fill after 8oz it leaks out


So you drove the vehicle with the power to the fan and it overheated and was discharging coolant?

After you have drained coolant and then refilled, you have to 'burp' the system to remove airlocks. There are videos if you Google 'burping vehicle radiator'. Basically you run the vehicle from cold with the radiator cap off and add coolant as the level drops. When the thermostat opens the level will rise and fall. There is a gadget that you can fix to the top of the radiator cap that you fill and the level is maintained. You can help the process by squeezing the lower and upper radiator hoses. The system must be full of coolant with no air. Then you turn the engine off, top up one last time, replace the cap and then top up the reservoir.

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There is no oil leak! The problem is that the antifreeze will not return from the reservoir back to the radiator once the vehicle cools off. I've replaced the radiator and the thermostat as well .


The radiator cap is bad or is the wrong one. The caps are rated for pressure and when that pressure is reached, it opens to allow coolant into the reservoir. When the system cools off, the coolant contracts and creates a vacuum in the system. Then the coolant is drawn back into the radiator. If it is not the cap, check the hose from the radiator to the reservoir.

Jun 15, 2015 | Cars & Trucks

1 Answer

Why water going out from the reserve tank in my batfinder


Your coolant system is leaking water.
Look under the vehicle for signs of the coolant whatever color it may be leaking down the engine.
If you have an automatic transmission, look at the fluid to make sure water is not leaking into the transmission via the cooler in the bottom of the radiator.
Check the tightness of all hose clamps on every rubber hose. Check the condition of the radiator cap and if it is older than 5 years, replace it with a new one anyway.
Take the overflow hose off the radiator and try blowing through it into the reservoir..if the system is dirty sometimes coolant is blocked from going into the reservoir when the engine heats up and therefore is dumped on the ground.
Check the reservoir for cracks.
Check it's cap if this is separate on your vehicle.
Please get back to us with your solution to this problem as it may help someone else in the future.

Feb 22, 2015 | 2008 Nissan Pathfinder SE

1 Answer

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.

Nov 22, 2013 | 2000 Jeep Grand Cherokee

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Radiator


Look for signs of coolant leakage on the garage floor, driveway or ground under your vehicle. Check the level of coolant in the overflow reservoir or inside the radiator by removing the radiator cap. The engine must be cool before the radiator cap can be safely removed. Inspect the radiator to find where it is leaking. There may be an obvious hole or other defect that is easy to spot, such as deposits of coolant and an orange or green discoloration. You can refer this link http://www.buyautoparts.com/radiators.htm to learn about radiator.

Jun 06, 2013 | Cars & Trucks

1 Answer

Air in lines for cooling system of 95 nissan maxima


Hello Michelle, my name is Michael and I too had air in the cooling system and this is how I got it out. I had to raise the front end to where the middle of the front bumper was about 40 inches. I removed the radiator cap and immediately had ton add more coolant till it was visibly full at the radiator filler neck. Make sure the cap on the overflow reservoir is on tight. Now start the car and observe the filler neck because you will probably have to add more coolant. once it is full turn on the heater to the max position and direct it to the feet and econ. you should see a lot of bubbles coming from the radiator filler neck. That is the air being purged from the system. make sure you fill with coolant as needed. Now when the t-stat opens you'll see the coolant drop from the filler neck because it's being exchanged from the engine block do not add coolant at this point. Put the radiator cap back on and remove the screw holding the overflow reservoir and raise the reservoir above the radiator and squeeze the tube to get the air out of the tube. Once the air is out and the tube is filled with coolant put the reservoir back in place and fill with coolant to the FULL mark. Shut off the engine lower vehicle and let the engine cool down and remove the radiator cap and fill with coolant till it is visibly full and replace the radiator cap. I had to do this twice but it worked and my car is operating at normal temperature and with the same stroke took care of a few other problems. Hope this helps and good luck to you.

Mar 29, 2013 | 1995 Nissan Maxima

1 Answer

How do i remove engine coolant cap on 2001 cadillac dhs


WAIT UNTIL YOUR ENGINE IS COLD,YOUR RADIATOR PRESSURE CAP IS LOCATED ON THE COOLANT OVER FLOW RESERVOIR, THATS WHERE YOU ADD COOLANT WHEN COOLANT LOW,YOU POUR COOLANT IN THE OVER FLOW RESERVOIR UNTIL COOLANT LEVEL REMAIN AT FULL COLD MARK DONT OVER FILL OVER FLOW RESERVOIR, WHEN COOLANT LEVEL STOP DROPPING WHEN ADDING COOLANT AND COOLANT LEVEL STAY AT COLD MARK ON THE RESERVOIR YOU RADIATOR HAS THE CORRECT COOLANT LEVEL IF COOLANT LEVEL KEEP DROPPING CHECK FOR COOLANT LEAKS AROUND RADIATOR AND THE TOP AND BOTTOM RADIATOR HOSES, LOOK FOR COOLANT LEAK AT WATER PUMP GASKET OR SEAL OR LEAK AT WATER PUMP WEEP HOLE IF YES REPLACE WATER PUMP.

Oct 23, 2011 | 2001 Cadillac DeVille

1 Answer

Loss water thru reservoir, so i have to refill the radiator and some times get hotter.


You shouldn't have to refill the actual radiator unless you either have a leak in it or the vacuum from it to reservoir is not good (loose hose, bad radiator cap). Adding directly to the radiator increases the chance of debris falling into the radiator and can easily clog it. Get a new radiator cap, check all around for coolant leaks and make sure hose from under cap to reservoir is tight and unclogged.

Sep 05, 2010 | 1987 Toyota Pickup

1 Answer

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head gasket is blown

Apr 26, 2010 | 1995 Volvo 850

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Increasing use of water from the radiator reservoir


One thing to check is for coolant getting into the oil, which would indicate head gasket failure. Check oil dipstick and/or underneath of oil cap for a frothy brown/tan look to it. If so, do not drive the car.

Also check coolant reservoir for a leak. Evaporation is suspect, but maybe not to the point you are describing. Check coolant reservoir cap, as well as radiator cap.

Apr 26, 2010 | 2000 Volkswagen Golf

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