Question about Cars & Trucks

3 Answers

What is the reason for losing water/

I have just replaced the radiator and water expansion bottle... but still the 'low water warning light' comes on when i am driving and when i stop, to check, the expansion bottle is very low on water if not empty.

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Ill add some of the trouble shooting on that.. please check the radiator cap rubber seal if their is a crack in it and replace it .. please check also the hose going to the expansion tank it might be inverted . i am thinking that it is plunged on the vent tube that is why when ever gets hot it pushes the water out from the expansion tank

Posted on Dec 13, 2012

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has achieved Level 3.

  • Master
  • 427 Answers

Losing water can be;
1. external leaks around the engine like freeze plugs, cut/broken old hoses, heater core leaking, or water pump leaking to name a few. Most external leaks will smell like the coolant. Look around the engine and on the ground for leaks and coolant.
2. could be an internal leak like a intake manifold gasket or even a head gasket or less likely an engine crack. Have a coolant system pressure check run on the system to see if the system will hold pressure. If the system does not hold pressure and the coolant is not leaking around or outside the engine, it is most likely an internal leak such as a head gasket which is common on many cars. Some auto part stores will rent the coolant system pressure test kit to run this test.

Posted on Dec 08, 2012

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    A rookie expert who has answered 20 questions on their first day.


    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 38 Answers

Could be you have a leak in one of you hose,s

Posted on Dec 08, 2012

6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 10 Answers

SOURCE: Coolant light

If you locate the water expansion tank (front of the bonnet, opened, with the pressure-cap to top-up if necessary) - check that there's sufficient coolant in there (check whilst the engine is cold).

If so, you may be suffering the same problem as a lot of RX8 owners, with a dodgy coolant level sensor in the tank. One way to confirm this is to remove the connector to the tank - on the left-hand side of the tank as you look from the front (not the air-conditioning connector, immediately to the left of it, attached to an aluminium billet). Ensure the (now free-hanging) connector from the wiring loom is safely stowed and give it a test drive. If you're satisified that the warning goes away then you know that the level sensor in the tank is faulty (and therefore the warning light is spurious). Unfortunately, that's a pricey item to replace (dealer price, UK, in the region of £200).

Remember, leaving the coolant sensor unplugged to avoid the spurious warnings would mean that a genuine problem that resulted in (catestrophic) loss of coolant would then go undetected, until too late. So do this at your peril.

Posted on Sep 10, 2009

  • 306 Answers

SOURCE: My service traction system warning light is on.

Most traction systems have sensors at each wheel. These detect wheel spin (can be a loose connection, broken wire, dirty sensor) The ABS won't work for the same reason but your brakes will work fine without ABS. (as long as brake fluid is full) The expansion bottle should have some coolant in it as well as the radiator. My experience is the bottle has a low level sensor that can get dirty ( If it was full) But you seem to be losing coolant? Is the lid on tight? Do you ever see coolant on the ground or in the engine bay? Sorry that's a mystery from here. Hopefully it is not disappearing in your engine. That would be a bad head gasket!

Posted on Mar 11, 2010

SOURCE: losing water and steam comes out of expansion

You have a blown head gasket. It is expensive to repair. I recommend that first you try the products available at Autozone or Advanced Auto. There are several that will clog the blow-out with aluminum powder and stop the coolant from entering the combustion chamber and stop the combustion gasses from entering your coolant system. It is about $15-$20 for these products and I have had success with them several times.

Posted on Mar 22, 2010

  • 8 Answers

SOURCE: Water bottle losing water

Sounds like a thermostat problem!!

Posted on Aug 21, 2012

SOURCE: steam coming from radiator but not losing water while driving

Doesn't seem to do something, will get you into
a not so good situation

Why are you using it vs: finding out the cause of the steam?

You either have a bad radiator or hose or some type
of leak being burned off on hot parts

Get involved & look it over

Posted on Nov 25, 2012

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Renault traffic 51 plate. whats the 70 amp large 2 prong fuse for in the box under the water expansion bottle.its on the bottom end of the row of 60 amp fuses mine keeps blowing it might be the reason for...

With the car off, replace the fuse and use an Ohm meter to search for a short or a faulty component. Could possibly be the electric cooling fans but that is just a speculation without the car or a service manual in front of me.

Aug 19, 2014 | Cars & Trucks

2 Answers

HI, we have 2002 Nissan Primera that is losing water but not onto the ground beneath the car. There isn't any oil in the water or vice versa, but we can't see where the water goes? Any ideas

check the water level in the bottle. If the radiator cap is faulty it will allow excess hot water into the bottle but on cooling down the water is supposed to be sucked back into the radiator. It gets to a point where low water in the radiator will not be pushed out and you get the impresion that you are loosing water If this area checks out the only other place is through the combustion chamber as steam indicating a head gasket or cracked head./ Check the radiator cap first and while you are at it with the engine hot fill the radiator right up and run the engine at idle. If you see air bubbles blowing out the water intermittently put your money on that is where the trouble is. hrad gasket or cracked head

Jan 17, 2013 | Cars & Trucks

1 Answer


Sounds like sticking thermostat. Replace thermostat if you see no leaks anywhere else.
You need to drain out any bad coolant or water when you replace thermostat and refill with concentrated antifreeze until you have at least 50% antifreeze water ratio.
You have to bleed the engine with new antifreeze solution so there's no air. I always go to youtube and see how mechanics do each engine bleed. Search your car and engine and `coolant flush'. don-ohio

Mar 11, 2017 | 1996 Lincoln Mark VIII

1 Answer

Water bottle losing water

Sounds like a thermostat problem!!

Aug 21, 2012 | 2005 Cadillac CTS

1 Answer

A light come on with a box with arrow pointing down looks like waves what does it mean

This indicates a low level of coolant in the coolant bottle/resevoir..... this symbol represents the radiator or coolant system liquid level.

Warning comes on to warn of coolant level too low.

When the engine is cold...remove the cap and check level. Add 50/50 antifreeze/water to level indicated on the side of the coolant bottle or tank.

Reservoir Bottles/tanks are usually transparent and you can see the coolant level through the plastic.

When coolant topped off to correct level, lamp will go out need for scanner or shop to turn it off. It will come on as a 'self check' when you turn on the ignition and if level is okay will go out when engine starts.

Sep 13, 2011 | 2004 Chevrolet Cavalier

1 Answer

I have a 2006 c5500 and the water light came on. Is it as easy as draining the fuel filter? and should I drain the fuel and change the filter?

Hi there,

It's important to understand that a "Water" warning light, does not relate to fuel.

If it is indeed a 'water' warning light, then it is likely to be either:

1) windscreen washer bottle water is low, or
2) engine coolant fluid is low (check the level of your coolant resevoir bottle)

If your coolant is low, then you should investigate why you are losing coolant fluid.


May 07, 2011 | GMC C3500 Cars & Trucks

1 Answer

Radiator leak

I would check the plastic overfull bottle on the passenger side fender well for cracks. Those are know for the plastic bottle to crack. Replacements run as low as $30.00. Also check below the water pump and any hoses for leaks.

Apr 27, 2010 | 1999 Ford Taurus

1 Answer

My service traction system warning light is on. What causes it? My ABS warning light remains on at all times. What causes it? My low coolant level warning light comes on often. The expansion bottle is...

Most traction systems have sensors at each wheel. These detect wheel spin (can be a loose connection, broken wire, dirty sensor) The ABS won't work for the same reason but your brakes will work fine without ABS. (as long as brake fluid is full) The expansion bottle should have some coolant in it as well as the radiator. My experience is the bottle has a low level sensor that can get dirty ( If it was full) But you seem to be losing coolant? Is the lid on tight? Do you ever see coolant on the ground or in the engine bay? Sorry that's a mystery from here. Hopefully it is not disappearing in your engine. That would be a bad head gasket!

Mar 11, 2010 | 2002 Chevrolet Impala

1 Answer

Changed expansion tank but light still on any ideas 03 ford escape low coolant level light on dash stays lightup

bad low coolant switch or still low on coolant.

Engine Cooling The cooling system components are the:
  • engine coolant temperature sensor (ECT sensor) (12A648)
  • radiator (8005)
  • degas bottle (8A080)
  • radiator draincock (8115)
  • water pump (8501)
  • water temperature indicator sender unit (10884)
  • water thermostat (8575)
  • dual speed fan motor assembly
The water pump circulates the coolant.
The water thermostat:
  • controls the engine coolant temperature.
  • allows quicker engine warm-up.
The degas bottle:
  • provides a location for fill.
  • contains coolant expansion and system pressurization.
  • provides air separation during operation.
  • replenishes the engine coolant to the system.
The fan motor (8C607):
  • operates only when the ignition switch is in the RUN position.
  • will not operate with the switch in the OFF position.
The engine coolant flows:
  • from the lower radiator hose (8286) to the water pump.
  • from the water pump to the engine block and the cylinder heads.
A closed water thermostat returns the engine coolant to the water pump; an open water thermostat allows the engine coolant to flow to the radiator.
Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.
When adding engine coolant, use a 50/50 mixture of clean, drinkable water and engine coolant.
To maintain the integrity of the coolant and the cooling system:

Dec 07, 2009 | 2001 Ford Escape

1 Answer

Have 2000 year sedona 2.9 ,blowing water in expansion bottle all

That's what it sounds like, a blown head gasket. Every time the piston compresses it pushes the air fuel mixture into your cooling system through the broken head gasket. Try running the engine with the radiator cap off or lose and look and smell for gas in your radiator overflow tank. Good luck and hope this helps.

Jun 15, 2009 | 2003 Kia Sedona

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

169 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

75066 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides