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LEAKING COOLANT MOSTLY LEAKS AFTER RUNNING HEATER. SPOTS ON GARAGE FLOOR AFTER PARKING OVERNIGHT. NO VISIBLE SPOTS ON ENGINE.

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  • 444 Answers

Loose clamps on hoses, Or check the bottom of the water pump if it is wet, Buy the wheep hole,In the bottom of the water pump.

Posted on Nov 02, 2012

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Posted on Jan 02, 2017

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pauman
  • 248 Answers

SOURCE: my daughter's 1997 Saturn is leaking coolant and overheating..

Coolant leaks can occur anywhere in the cooling system. Nine out of ten times, coolant leaks are easy to find because the coolant can be seen dripping, spraying, seeping or bubbling from the leaky component. So open the hood and visually inspect the engine and cooling system for any sign of liquid leaking from the engine, radiator or hoses. The color of the coolant may be green, orange or yellow depending on the type of antifreeze in the system. The most common places where coolant may be leaking are:Water pump. A bead shaft seal will allow coolant to dribble out of the vent hole just under the water pump pulley shaft. If the water pump is a two-piece unit with a backing plate, the gasket between the housing and back cover may be leaking. The gasket or o-ring that seals the pump to the engine front cover on cover-mounted water pumps can also leak coolant. Look for stains, discoloration or liquid coolant on the outside of the water pump or engine.Radiator. Radiators can develop leaks around upper or loser hose connections as a result of vibration. The seams where the core is mated to the end tanks is another place where leaks frequently develop, as is the area where the cooling tubes in the core are connected or soldered to the core headers. The core itself is also vulnerable to stone damage. But a major factor in many radiator leaks is internal corrosion that eats away from the inside out. That's why regular coolant flushes and replacing the antifreeze is so important.
oses. Cracks, pinholes or splits in a radiator hose or heater hose will leak coolant. A hose leak will usually send a stream of hot coolant spraying out of the hose. A corroded hose connection or a loose or damaged hose clamp may also allow coolant to leak from the end of a hose. Sometimes the leak may only occur once the hose gets hot and the pinhole or crack opens up. Freeze plugs (casting plugs or expansion plugs in the sides of the engine block and/or cylinder head). The flat steel plugs corroded from the inside out, and eventually eat through allowing coolant to leak from the engine. The plugs may be hard to see because they are behind the exhaust manifold, engine mount or other engine accessories. On V6 and V8 blocks, the plugs are most easily inspected from underneath the vehicle.
Heater Core. The heater core is located inside the heating ventilation and air conditioning (HVAC) unit under the dash. It is out of sight so you can�t see a leak directly. But if the heater core is leaking (or a hose connection to the heater core is leaking), coolant will be seeping out of the bottom of the HVAC unit and dripping on the carpet. Look for stains or wet spots on the bottom of the plastic HVAC case, or on the passenger side floor.
Intake Manifold gasket. The gasket that seals the intake manifold to the cylinder heads may leak and allow coolant to enter the intake port, crankcase or dribble down the outside of the engine. Some engines such as General Motors 3.1L and 3.4L V6 engines as well as 4.3L, 5.0L and 5.7L V8s are notorious for leaky intake manifold gaskets. The intake manifold gaskets on these engines are plastic and often fail at 30,000 to 80,000 miles. Other troublesome applications include the intake manifold gaskets on Buick 3800 V6 and Ford 4.0L V6 engines.
INTERNAL COOLANT LEAKS
There are the worst kind of coolant leaks for two reasons. One is that they are impossible to see because they are hidden inside the engine. The other is that internal coolant leaks can be very expensive to repair.


visit for more info:

http://www.aa1car.com/library/coolant_leaks.htm

Posted on Nov 24, 2008

  • 1779 Answers

SOURCE: COOLANT LEAKING, BUT NOT VISIBLE UNTIL IT GUSHES OUT OF THE BOTTO

U need to get under the car to see where the coolant is coming from. The car should be driven up on sturdy ramps, or placed on jack stands so u can safely go under the car to look for the source of the leak. It could be a heater hose, a radiator hose, freeze out plug in the block, the radiator. U must be careful of the hot coolant while checking it out! If u don't want to do the checking yourself, u should go to a garage with a lift. They can easily get under the car, and u can ask to see where the leak is. Get this checked asap, as u can blow the head gasket when the car overheats (this also may be the source of your leak) Let me know how u make out or if u need more info

Posted on Nov 28, 2008

  • 142 Answers

SOURCE: 1996 Jeep cherokee, leaking coolant when cold/ hot ok.

waterpump houseing/shaft seal is on the way out hence the water/coolant, running along the block. when hot the seal does so, when cold and depressurising seal doesnt.

Posted on Jan 25, 2009

  • 532 Answers

SOURCE: 98 Expedition coolant leak top back of engin

Sorry im late with this,i couldnt seem to log on....The answer to your question is YES,there is a steel line under the intake with a short piece of rubber line attached to it and you can just about see it from the front of the intake with a light,it can leak and cause coolant to run off the back of the engine,The intake gasket set alone is about $40.00 and i dont know about the rubber line,i have seen it physically but havent changed one yet.Note the date of manufactor just incase,i bought an intake set for a 99 and the engine design was changed half way through...its not too hard to pull off the intake and re-install,you will need a 7mm socket for the coil packs,8mm socket for the fuel rail bolts and lower intake bolts and power steering bracket bolts and throttle bracket bolts,10mm socket for the intake bolts and alternator bolts and egr valve,and a large cresant wrench for the exhaust tube thats connected to the egr valve,flat screw driver for the air cleaner...and plenty of extensions with a swivel to be able to get to the back bolts of the intake....just incase you do it yourself this info could make it easier to gather tools.Its about a 3 1\2 to 4 hour job start to finish for the first time doing it,includes cleaning everything..Good luck

Posted on May 16, 2009

bschilz
  • 2049 Answers

SOURCE: My 2002 Saturn L300 has been losing coolant

This may be the first sign that your water pump is failing. First sign is a leak. Crawl on your back under car if you can see if you can see it coming from front of engine near a pully that would turn your water pump. There is a "weep hole" it may be driping from.

Posted on Sep 05, 2009

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Car running hot when idle, and loosing coolant


Sorry to say, if you are using coolant and there are no visible leaks, it could be a head gasket.

Jan 16, 2014 | Cars & Trucks

Tip

Engine coolant leak


There are no coolant lines etc running on the lower part of the engine.Usually water will leak from above and run down finally dripping from under the engine. Coolant will not leak from the "engine" it leaks from a hose or thermostat housing.


Start from the top and work down. Check each hose by feeling with your hand. Look for a wet spot. wipe the hose with a cloth to clean if necessary. If you think you found it dry the area and check again.Sometimes you need to move the hose around to open a small tear and expose the leak source.

Tip: park overnight on a piece of cardboard. Look for the spot where it is dripping. This will give you and idea where to look.

If a hose leaks around a clamp tighten the clamp. Screw clamps can be tightened. The spring style can not. Once moved the spring type often leak. If moved try moving to the exact position it was in using the impression left on the pipe. I could suggest though that your replace it with a screw type clamp.

If you find a torn hose you may be able to disconnect, cut the end and reattach. If too short replace.

Check where each hose connects to the engine. This will be the thermostat housing and the heater supply line. If a housing is leaking try gently tightening (careful they crack). Or replace the gasket. Use a new gasket do not just use gasket sealer.

Check at the radiator. There will be a heat sensor there. They screw into the radiator. If it is leaking try to gently tighten (take care you can break it). If that does not work remove the sensor and put Teflon tape on the threads. That should do it.

If you don't see a leak at all. Start the engine and run. This will build pressure in the cooling system. Look for leak using the same process. Careful as the engine is hot.

on Mar 07, 2010 | Volkswagen Jetta Cars & Trucks

1 Answer

Water leak


Find a brave soul who will taste the water, just a tiny droplet.
If it really is water, it should be coming from your air conditioner.
You might take a flashlight and try to determine exactly where the water is coming from, by parking the car in the same spot each time, and then opening the hood and see what is above the drips.
If it is radiator coolant, it should taste sweet, and should have some color, like whatever your coolant is colored.
That could be pink, yellow, blue or green, but outside of a clear glass dish collector, it would be hard to tell.
Radiators should not have water, it should be coolant, which is a 50%/50% mix of water and anti-freeze.
Moisture on windows is a different matter, usually.
We will hope the heater core is not leaking to cause the moisture on the windows, 'cause that is a terrible big job to fix.
Be blessed.

Apr 07, 2013 | 2009 Ford Explorer

1 Answer

Power steering fluid leaking?


Robert, Use a strong flashlight and check from top and bottom. If you need to jack vehicle to check underneath the engine, please secure it with jack stands (don't rely on the floor jack or your vehicle's tire change jack). If you don't see evidence and have not lost any fluid then there is nothing wrong. Any visible "wetness" is acceptable as long as it is not dripping or running when engine is running. Check all your fluids and make sure it is serviced per manufacture recommendations or your owners manual. Check it again after one month, if the fluid level is fine, then the car is fine. Also place a cardboard on the floor where you park overnight and see if you have any evidence. Sometimes during oil changes, depending of filter location, droplets are common as well as from the oil pan drain plug during removal. As long as it does not elak after installation, you are fine.

Feb 17, 2013 | 2008 Mercedes-Benz ML 350

1 Answer

I smell gas but i'm not lossing any.


My first question is - is the check engine light on when you are driving ?
You could have a leaking injector which could be causing fuel to escape thru the exhaust. You could also have a leak in the vent system for the gas tank.
The need for coolant and oil if no leaks are visible usually means the engine is burning the fluids because of an internal engine leak or head gasket problem.

Feb 04, 2013 | 2005 Chevrolet Tahoe 4WD

3 Answers

Coolant leak in 2000 Volvo V70 XC AWD with turbo


have you checked to make sure its not leaking into your oil. most heater core leaks will be on the front floor of the passenger side of the car.

May 15, 2010 | 2000 Volvo V70

1 Answer

I'm loosing coolant / heater does not work once coolant level is low / it's been checked by a mechanic and no leaks were found... radiator pressure is fine... what else can I do.. I' still getting low in...


"Mystery leaks" can be very frustrating..You have a leak somewhere, guaranteed. Check all hose connections, hoses, the thermostat housing gasket, the water pump gasket, and the water pump itself (check it last). Try this: park the car overnight inside a garage immediately after driving it while it is still hot. Park it over a large piece of cardboard. Antifreeze is, among other things, oily in nature, and will stain the cardboard where the coolant drips onto it. The areas that get stained are not necessarily the area from which the coolant leaks--water travels along various surfaces until it reaches a low enough spot to drip from, But if you have a stain, even a small one, smell it...if it's antifreeze, check everything again. Sometimes you have a pinhole in a hose so small it is only open and spraying coolant when the system is at temperature and under pressure. Keep looking; you'll find it. If I helped you, please vote/comment, and good luck.

Feb 20, 2010 | 2002 Jeep Liberty

4 Answers

Antifreeze smell coming from defroster in 2002 f150


if the floor is wet on the passenager then it maybe your heater core give these websites a try www.autozone.com and www.alldatadiy.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your truck wish you the best of luck Michigan Man.

Nov 11, 2009 | 2002 Ford F150 Regular Cab

2 Answers

My daughter's 1997 Saturn is leaking coolant and overheating..


Coolant leaks can occur anywhere in the cooling system. Nine out of ten times, coolant leaks are easy to find because the coolant can be seen dripping, spraying, seeping or bubbling from the leaky component. So open the hood and visually inspect the engine and cooling system for any sign of liquid leaking from the engine, radiator or hoses. The color of the coolant may be green, orange or yellow depending on the type of antifreeze in the system. The most common places where coolant may be leaking are:Water pump. A bead shaft seal will allow coolant to dribble out of the vent hole just under the water pump pulley shaft. If the water pump is a two-piece unit with a backing plate, the gasket between the housing and back cover may be leaking. The gasket or o-ring that seals the pump to the engine front cover on cover-mounted water pumps can also leak coolant. Look for stains, discoloration or liquid coolant on the outside of the water pump or engine.Radiator. Radiators can develop leaks around upper or loser hose connections as a result of vibration. The seams where the core is mated to the end tanks is another place where leaks frequently develop, as is the area where the cooling tubes in the core are connected or soldered to the core headers. The core itself is also vulnerable to stone damage. But a major factor in many radiator leaks is internal corrosion that eats away from the inside out. That's why regular coolant flushes and replacing the antifreeze is so important.
oses. Cracks, pinholes or splits in a radiator hose or heater hose will leak coolant. A hose leak will usually send a stream of hot coolant spraying out of the hose. A corroded hose connection or a loose or damaged hose clamp may also allow coolant to leak from the end of a hose. Sometimes the leak may only occur once the hose gets hot and the pinhole or crack opens up. Freeze plugs (casting plugs or expansion plugs in the sides of the engine block and/or cylinder head). The flat steel plugs corroded from the inside out, and eventually eat through allowing coolant to leak from the engine. The plugs may be hard to see because they are behind the exhaust manifold, engine mount or other engine accessories. On V6 and V8 blocks, the plugs are most easily inspected from underneath the vehicle.
Heater Core. The heater core is located inside the heating ventilation and air conditioning (HVAC) unit under the dash. It is out of sight so you can�t see a leak directly. But if the heater core is leaking (or a hose connection to the heater core is leaking), coolant will be seeping out of the bottom of the HVAC unit and dripping on the carpet. Look for stains or wet spots on the bottom of the plastic HVAC case, or on the passenger side floor.
Intake Manifold gasket. The gasket that seals the intake manifold to the cylinder heads may leak and allow coolant to enter the intake port, crankcase or dribble down the outside of the engine. Some engines such as General Motors 3.1L and 3.4L V6 engines as well as 4.3L, 5.0L and 5.7L V8s are notorious for leaky intake manifold gaskets. The intake manifold gaskets on these engines are plastic and often fail at 30,000 to 80,000 miles. Other troublesome applications include the intake manifold gaskets on Buick 3800 V6 and Ford 4.0L V6 engines.
INTERNAL COOLANT LEAKS
There are the worst kind of coolant leaks for two reasons. One is that they are impossible to see because they are hidden inside the engine. The other is that internal coolant leaks can be very expensive to repair.


visit for more info:

http://www.aa1car.com/library/coolant_leaks.htm

Nov 24, 2008 | 1996 Saturn SL

1 Answer

Water on Drivers side Saturn SC2


Is it antifreeeze from heater core or heater core hose leak?  Is the leak pure water, or maybe something else?
Put it in the garage again overnight with an old white towel in the drivers foot well, best if you can find a way to stretch it from drivers seat forwar to firewall and keep it off of floor mat.  Check it before you go to bed,  then in the morning if no leak found yet.  see if the color/location of the spot helps you identify the source.  I think the heater core is under the dash center.  Anti freeze is green/yellow or orange.
good luck

Nov 06, 2008 | 2004 Saturn L-Series

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