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2005 aveo Coolant reserve tank leaking when engine running. Stops when off. No noticeable cracks on reservoir. All hoses good. How do I fix this?

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Get the compression tested sounds like you may have a bad head gasket

Posted on Apr 15, 2015


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Posted on Jan 02, 2017

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SOURCE: 2000 Ford Taurus SES, 3.0L. Have coolant leak

I suggest that you put it back together, clean it, and pressure test the cooling system. Needs to hold 13 to 15 psi. THEN look for leaks.

Posted on Mar 18, 2011

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SOURCE: my 2007 chev. aveo overheated had a busted hose fixed hose added coolant stated car and noticed like oil in the coolant reservoir what' s going on

you might have a cracked head or if you have a cracked head you might as well get a new car

Posted on Apr 27, 2012

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My 2002chevy trailblazer is leaking some where under the resoivre and if I go to long driving it will over heat but the radiator has water

the tank might have a crack or hose leak if not tank the heater hose lines run under there also

Aug 04, 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

Chevy 2005 cavalier low coolant light keeps coming on and the coolant reservoit tank is empty after only 200 miles. what is causing this?

  1. Check the hoses and clamps going from the reservoir to the radiator and from the radiator to the engine. Make sure they are flexible and in good condition.
  2. Check the reservoir and radiator for leaks.
  3. Replace any parts they may be failing. If no leaks are found proceed to next step.
  4. Check engine oil. If oil has coolant in it you may have a blown head gasket or crack in the head or engine block. Another sign of a coolant leak into the cylinders is white smoke coming from the exhaust after the engine is warmed up.

Jun 24, 2014 | 2005 Chevrolet Cavalier

1 Answer

I have a 2005 Chevy equinox. When I drive the car I can smell coolant when I get out. I have been adding a little bit of dexcol periodaclly when the reservoir gets low. I know their is a leak somewhere,...

the water pump is leaking or the hoses/engine gasket--keep watch of temp gauge and carry coolant/water with u--add it to resevoir only so udont burn urself--hav a pro look at it for free like a napa sstore--dont go to a dealer-save ur $$

Apr 10, 2013 | Cars & Trucks

3 Answers

Coolant around reservoir and indicator shown over heat

Engine showing hot but heater not putting out heat is a sure sign you are low on coolant! Not knowing the percent of antifreeze, I couldn't give a absolute answer but I know this... Go buy one of those coolant testers at a auto supply, test a sample of the remaining coolant. If it shows you were not protected to the very cold temperatures you can get there in Toronto, then you may be in trouble, my friend. The only way to tell for sure is to first get the car inside somewhere warm and let it thaw good. While waiting, visually check the engine, radiator, and hoses all over for signs of freezing, like holes, cracks, popped freeze plugs, etc. If you find something that can be fixed, fix it. The goal is to test for leaks. Fill car with plain water and if it's not leaking any more, run it up to temperature and see what happens. If it acts OK, at that point drain all water, add proper amount of coolant, and retest using the coolant tester tool I mentioned earlier. One thing I forgot to mention when filling vw engines with coolant. Don't know about the newer Golfs but the older rabbits had a bad problem trapping air in the head when filling coolant because the reserve tank was positioned too low. If yours is higher than the top of the engine, your OK but if not, the solution is to take loose the top radiator hose at the radiator and lift it up higher than engine. Continuing to hold it high, you then pour coolant in the hose until it comes out the radiator then quickly re-attach the hose and re-tighten it. Now, back to cooling solutions.... if you are still having same problem, check that your water pump belt is tight. When the engine just gets up to temperature, check that the electric fan is coming on. After engine is too warm to leave your hand on it, feel the top hose to see if warm coolant is flowing. If not, you may need to pull the thermostat, heat it up in a pan of water to at least the temperature stamped on the thermostat, and check that it physically opens all the way. (Use a meat or candy thermometer to check the water temp). That's about it my friend. Good luck and let me know how it goes?

Jan 02, 2010 | 1996 Volkswagen Golf

2 Answers

2005 sienna running hot

1. Check coolant level in radiator/reservoir. Do this with the engine cold.
2. Make sure radiator fins are clean
3. If the above 2 do not fix the problem, replace the thermostat.

Oct 24, 2009 | 2001 Toyota Sienna

3 Answers

1995 ES 300 - antifreeze is draining from reserve. took to a mechanic who did diagnostic. said everything was fine. said no antifreeze in radiator so he topped off. 2 weeks later, the car is running hot...

Is the reserve tank cracked or have a deteriorated hose going to the radiator? Remove the tank to find out. A bad seal on the radiator cap can also lose fluid. A coolant leak anywhere can deplete the coolant level in the radiator and reserve tank. Check your owners manual for antifreeze type and mix ratio with water.

Aug 03, 2009 | 1995 Lexus ES 300

2 Answers


Check ebay for an aftermarket one or similar....hit the junkyard too. Save yourself some cash from having to go to the dealership.

The reservoir is meant to catch the coolant as it overheats in the radiator after it comes back from flowing through the engine. It is a good idea to have the reservoir because after it catches the fluid from expanding, it cools down and gets sucked back into the radiator. So yes, you need a reservoir.

Jun 28, 2009 | 2005 Dodge Ram 2500 Truck

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