Question about 2000 Jaguar S-Type

2 Answers

My S type jagusr is losing water from the coolant expansion box overflow pipe, but its not overfilled

Posted by on

  • vernonparkgy Mar 24, 2011

    But it gets so low that the heater stops working...

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,702 Answers

If the cooling system is over pressurizing one of two things can cause this either the engine is getting hot witch causes the coolant to expand and over pressurizing the system and this could be a thermostat but i think you would see this on the temperature gage, or 2nd option is you are getting compression into the cooling system this can only happen if the have a leaking cylinder head gasket or a cracked cylinder head, make sure there is no coolant in the oil, if there is stop driving the car and get it to a shop or do a leak down test to find witch cylinder is the cause of the leak.

i hope this helps, let me know if there is any thing else i can do for you.

Posted on Mar 24, 2011

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 250 Answers

I know it looks scary, but it is quite normal, and nothing to worry about. As the coolant gets hot, it expands. And because it has expanded, it needs somewhere to go. Hence, you have an overflow pipe. As the fluid cools down again, it will **** the amount it needs from the expansion box into the motor, and the cycle is complete. It will only be a problem when the expansion box is empty, and there is none to go back into the motor.

Posted on Mar 24, 2011

  • John Trigg Mar 25, 2011

    Issa there anything else going wrong that you can tell us about? If you don't give us all the facts, then we can only guess at what's wrong. You mentioned that the heater is low, but please give as much detail as you can to enable us to know what is wrong, and I will try again to help.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Losing coolant through overflow car not overheating2004 vz 3.6 motor


Overflow of what? You could be losing coolant through radiator cap, which could seem like a radiator overflow and problem might be a clog on the hose from rad to expansion tank.

If you are losing coolant due to overflow of expansion tank, any chance you added too much? Always fill to recommended level indicated in dipstick.

With cars it's always worth noting symptoms, how and when they happen. If you're losing coolant for any reason other than adding too much to begin with, it's not a matter of 'if', it's a matter of 'when' the car is going to overheat and cause more problems/cost more, early diagnosis matters.

Feb 26, 2017 | Cars & Trucks

1 Answer

General question. I have no owners manual. How do you tell when your coolant level is OK? Does it have a means to prevent overfilling?


Hi, you should have an expansion tank in the engine compartment usually a white type of plastic with a cap on it and there should be a water level mark . This is best checked when the car is cold . Do not check if the motor has been running as this is also an expansion tank and the water is boiling and will have to cool down to get a proper reading.

Feb 26, 2016 | 2006 Dodge Grand Caravan

1 Answer

Why is the coolant overflowing when the temp guage gets half way?


well the tank must never be full, when engine is cold
was it? (read operators guide to see methods)
water expands hot, and the tank captures this expansion
that is normal.
what does "until its all gone", mean, what is IT?
there are lots of tests.
the first one, is,
IS the engine overheating,?
try a new rad cap, they are dirt cheap.
and, is the oil or carbon in the RAD neck, cap off , cold engine>?
is there water in the engine oil, milky dip stick end?
same with A/T trans? milk, or pink/red ATF.
is there steam going out the tip of the exhaust pipe on a fully hot engine>? yes/no?
is air and water exploding in to the side expansion tank.?

cold engine
remove rad cap'
fill rad with 50% AF.
new cap back on.
put 50% AF 1/2 way up in to expansion tank(its marked clearly)
start engine , does it overflow now>?

Jul 04, 2014 | Saturn SL1 Cars & Trucks

2 Answers

2002 suzuki grand vitara coolant lose with no visual leak replaced water pump thermostat and radiator cap


could be head gasket leaking if there are no obvious leaks from hoses,gaskets,radiator etc

May 10, 2014 | 2000 Suzuki Grand Vitara

1 Answer

Water coming out of overflow


Try getting a coolant tester & making sure that you coolant/water mix is right. Also make sure that you're using the right type of coolant for your vehicle. After that I would check the 2 hoses to make sure neither is plugged. If you have too much water in your mix, it could get hotter and overflow.

Nov 10, 2013 | Kia Sportage Cars & Trucks

1 Answer

Hyundai coupe water leak from expansion tank


The system is supposed to be able to contain the overflow then pull the extra coolant back into the radiator when needed.
Is the overflow tank fluid level at or below the recommended level ?

Jul 25, 2012 | Cars & Trucks

2 Answers

A Toyota hiace, overheating, no present leaks


exhaust gas coming thru the resiovoir, sounds like a head gasket

Jul 17, 2010 | 1985 Toyota Passenger

2 Answers

Its over heats and i put water every one or two days today i notice that a white clear container by the water hose is empty and greasy


Look at the oil on the dipstick. If its milky you have a head gasket issue. Also if you can make it to a smog machine they can sniff the coolant fumes to see if gas is in the coolant. Head Gasket again. Any repair shop has a chemical that can test for gas in the coolant also.

The theory here is if your losing water and none is leaking on the ground its got to be going into the cylinder and getting pushed out the exhaust pipe.

Now if its just overheating you may have a stuck thermostat or clogged radiator or a coolang fan that dlesnt turn on when commanded by the computer.Also if its just overheating and the water lost is going on the ground somewhere then you may not have a head gasket issue.

I just did a head gasket on a Honda because as the engine was warming up the overfill bottle would fill up and overflow. The combustion pressure was leaking into the coolant and pushing the coolant out.

Jul 14, 2009 | 1998 Honda Civic

1 Answer

Water leak from top of expansion tank.2000 BMW 316i se


The water (coolant) in the expansion tank will rise and fall with the engine temperature. What the expansion tank does is collect and return coolant to and from the engine. When the engine warms up the coolant gets hot, builds up pressure and opens up the radiator cap. The coolant then goes into the expansion tank. Now when the engine cools down the pressure drops in the cooling system and the pressure drop (vacuum) pulls the coolant back into the engine via the radiator cap. The radiator cap allows the cooling system to build up pressure and by doing so increases the boiling point of the coolant, but when that pressure exceeds the caps rating the cap opens and the coolant goes to the expansion valve. The cap has another part to it that when the engine cools down and a partial vacuum is created in the cooling system a "valve" in the radiator cap opens and allows the coolant to be drawn back into the engine. I would look at your radiator cap to see if any gunk or build up is on it, and check the rubber gaskets for cracks. It's easiest just to replace the cap because they are inexpensive and easy to replace (2-10 dollars). The expansion tank should have two hoses on it. The one on the bottom comes from the radiator and the one on the top (possibly part of filler cap) runs down and is open to the ground. That way if it is overfilled or becomes overfilled it will slowly leak onto the ground. When and if you change your radiator cap, make sure the engine is cooled down, remove cap and start engine and turn heater to full blast, full heat. Leave the cap off and let it run until engine warmed up. This should burp out any air pockets that may have happened when coolant was changed. Also top off the coolant in the radiator while it is running. Hope this helps and good luck

Apr 03, 2009 | 1992 BMW 3 Series

1 Answer

Still losing coolant


Hi, Sounds like the water pump is not circulating the water, as soon as the engine heats what water is in it, it will boil. Since you are brave enough to open the radiator when it is hot ( Bad Idea ! ) open it when it is cold, start the car and watch to see if the coolant circulates. You may have to wait unit the thermostat opens and if the water pump is bad when the thermostat opens it may spray hot coolant and steam instead of circulating what is in the radiator so don't be in the way. Not the best way to test this but works if you don't have diagnostic tools. Good Luck! By the way, coolant means antifreeze mixture which if it gets too thin lowers the boiling point significantly.

Feb 19, 2009 | 1987 Toyota Celica

Not finding what you are looking for?
2000 Jaguar S-Type Logo

Related Topics:

102 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jaguar Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

yadayada
yadayada

Level 3 Expert

76848 Answers

SPEEDY CAR WORK SHOP...

Level 2 Expert

489 Answers

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

Answer questions

Manuals & User Guides

Loading...