Question about 2001 Mazda 626

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Leak in coolant reservoir on a 2001mazada 626

The car is running really hot can't seem to hold any water.

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You need half antifreeze and half water. to raise boiling point to keep engine from over heating.if you run just water it is evaporating away .that why it seem you got a leak.

Posted on May 29, 2009

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My 2004 3.4 6cyl base impalas "hot coolant temp" light came on and the reservoir tank is half way full now when cool. It wasn't a week ago, I haven't added any fluids, what could be the problem?


seems that you have a coolant leak somewhere and when cooling down the leak is sealing and drawing back reservoir water
could simply be a radiator cap problem
have a coolant pressure test done
check under the water pump body for a leak under running and pressure

Nov 02, 2016 | 2004 Chevrolet Impala

1 Answer

Car overheating


You may have a blown engine head gasket. Check your oil to see if it is milky because water is getting into the oil, and check the water to see if oil is getting into the coolant.
If you have either of these, you may need to have a new head gasket for the engine, and hopefully you do not have a cracked engine head.
This will require a fair bit of work to fix correctly. Your local garage or mechanic may be your next call.
There are some products you can use in the coolant for either of these, but it is only a temporary fix.

Jan 31, 2014 | 2001 Mazda MPV

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

2 Answers

Theres coolant leaking from somewhere i cant see i know its not from the radiator or or hose unless there's another hose i cant see. the leak is located under the motor mount running down the tranny on...


really this could be one of several issues, does the vehicle run Hot, are you having to fill the reservoir with water or coolant, there is a hose that runs from the cap (overflow hose) to the reservoir, in addition to the upper and lower hoses, finally the water pump. the water pump is equipped with weep holes, which allow fluid to weep out when the pump is bad. finally the thermostat, hopefully one of these can solve your issue, good luck!

Sep 18, 2009 | 1995 Honda Accord

1 Answer

Engine coolant hot


fill the reservoir with the coolant. it is a GOOD thing you dont see steam or a leak I hope.YOU DO WANT TO CATCH THE PROBLEM BEFORE IT REALLY OVERHEATS OR YOU MAY HAVE MORE COSTLY PROBLEMS. fill the reservoir. BUT, it may only fill the "radiator" once you do this as it cools off. As the radiator water cools it sucks the reservoir water into the radiator. as it heats up and the water swells (increases in volume) it pushes the excess into the reservoir. when the engine is good and hot and you dont have any coolant in the reservoir, that is a sign that the radiator is low or empty also.
when the engine is cold, find the radiator cap and remove it, add as much coolant you can there. fill the reservoir also. If it has been several years since the radiator cap has been replaced, I would do that now ( it is a cheap investment). if the gasket on the cap is not sealing well anymore or the exspansion valve mechanism on the cap is not working properly anymore, then it will let coolant pump out into the reservoir and not hold radiator pressure. if the reservoir is empty the radiator itself is probably too low or empty.

Jun 11, 2009 | 2005 Cadillac Escalade Esv

1 Answer

I need to know what the part is called and how to fix it. The part is leaking hot coolant fluid, it is a ''y'' shape tubing that feels like hard plastic, black in color. It runs on the left side to the...


sounds like hoses going to heater core but they are rubber usually. But it could be the hoses for the degs bottle mounted on the passenger side inner fender.

Coolant Recovery System NOTE: When the water thermostat (8575) is closed, coolant flows through the degas tube and hose assembly from the lower intake manifold to the radiator coolant recovery reservoir (8A080) .

Trapped air in the cooling system must be removed. A pressurized radiant coolant recovery reservoir system is used which continuously separates the air from the cooling system.
  • When the water thermostat is open, coolant flows through both the small hose from the top of the radiator outlet tank and the degas tube and hose assembly from the engine to the radiator coolant recovery reservoir.
  • The radiator coolant recovery reservoir separates any trapped air from the coolant and replenishes the system through its radiator coolant recovery hose.
  • The radiator coolant recovery reservoir serves as the location for:
    • service fill.
    • coolant expansion during warm-up.
    • system pressurization from the pressure relief cap.
    • air separation during operation.
  • The radiator coolant recovery reservoir is designed to have approximately 0.5-1 liter (0.53-1.06 quarts) of air when cold to allow for coolant expansion

Apr 08, 2009 | 1995 Ford Taurus

3 Answers

2000 Chrysler Town and Country Antifreeze leak


I would replace the Thermostat and see if that will not Stop this. It is Coming from the Overflow Tank. It is getting a Little Warm during Driving and the Extra Coolant that will Build up Preassure needs somewhere to go So, It sends it to the Overflow Reservoir and it Seeps out the Overflow Outlet. This is Pretty Common though and Really not that Big of a Deal as long as you do not loose too Much. Please Rate My Response! Thanks!

Feb 06, 2009 | 2000 Chrysler Town & Country

1 Answer

Hose for antifreeze reservoir 1997 saturn SL2?


There should only be 2 hoses going to the resivoir. A small hose to the top, fender side. And a larger hose bottom toward the engine. There is a coolant level switch on the bottom. If you roll the washer resivoir forward it will lift up out of the way, without un-hooking anything. Hopefully this helps.

Aug 27, 2008 | 1997 Saturn SL

3 Answers

Overheating '99 Mazda 626 LX 6-cyl


Finally gave up and took to local shop where they performed a pressure test on the engine coolant system. They found a small hole in the plastic reservoir which had to be replaced. Issue now resolved – thanks!

Jul 13, 2008 | 1999 Mazda 626

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