I fill the bottle under the bonnet, and all is good, heater great, after about a week the heater is cold and when I check the coolant it is under minimum level, now there is no steam when driving, no water drop when parked up engine running, no water in the cab, all I can think is the fan switch has gone and it is not kicking the fan in. I top up the bottle and all is fine for a few weeks????
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Cars & Trucks Master
Re: My jag is losing coolant
When your exhaust is starting to give white smoke and the coolant is running out faster and faster, visit a repair shop, because it could be you head gasket is slowly blown away. Don't let it run till it is out complete, because the repairs will be more expensive.
Testimonial: "no, no steam from exhaust no running issues, no mottled oil under filler cap, I am thinking it is the fan not kicking in and the water is blowing off so ill sit engine running and leave it till the fan kicks in, if it does not kick in new switch but need to find where it is, will call stratstones in Manchester. thanks for trying"
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Could be a variety of problems iam afraid but check the coolant level when cold and make sure you put antifreeze 50% in fill it up the top and make sure the expansion bottle is full as well then try it as if level is a bit low then the heater is the first to suffer
Look in the radiator in the morning when car is cold take off the cap if it is full then look at the reservoir and make sure you see to lines on it one you fill to when cols the other you fill to when how it will say hot and cold fill lines fill yo cold when it is cold then next day check and see when cold if it is at the same mark
You most likely have a slow leak. When your engine is cold, top up the coolant, with the bonnet up start your engine and wait till the engine warms and then look under the bonnet and on the ground under the engine to observer where the coolant is leaking from. Then you will be able to determine a possible fix.
If you dont have an external coolant leak anywhere under your hood that has shown up on your driveway it could be the intake manifold or the headgasket leaking. Also check the thermostate to solve the heat issue.
All cars have what is called a heater matrix , this car has, it is inside the car behind the dash, the purpose is to provide heat in side the car, if the car is running at normal operating temp you thermostat is ok, the heater in the car is known as a heater matrix and will block up due to lack of use as water on passing throu when you have the heat on in side the car , hence the water leaves risidual that blocks it, if you keep a good level of antifreze/summer coolant in the systym it will prevent this, it is also the first palce to be affected when you lose water from the cooling systym, i will foward the detail how to clean it out, as removal is very labour intensive,
Hi Arvid! You do need to keep putting Coolant into it until it will not accept anymore. The block and radiator will hold Probably 4 Gallons of Coolant and Water.If it is not Cold where you are, Just use water the First time to see if it is Leaking out of the Head instead of wasting all the Money on the Coolant Because if it has a Leak you will have wasted all that Coolant and $ For Nothing! Let me know what you Find out! Please Rate My Response, I need all the Help that I can get on Ratings! Thanks and Good Luck!
First thing you need to do is pull rad cap off & see where your coolant level is at. If it's low, top it up, start engine with heater (not defrost) on & let it run for a while with cap off & top up as needed, to see if it starts to get heat. After rad fan comes on a couple of times & operating temperature is good, put cap back on & fill return bottle to proper level. Keep an eye on that bottle level for a while, in case your losing coolant somewhere. If that doesn't cure your heat problem, change thermostat & refill coolant in same manner as mentioned above.
It is possible that you may have an air lock in the system. You need to drain the rad and remove the upper most heater hose from the heater core and raise the hose up high . Fill the rad until coolant comes out of the heater core pipe. Carefully reattach the heater hose. Fill the rad slowly allowing trapped air to escape.This may take a while. Once the rad is full put a catch basin on the floor under the rad filler neck.Start the car and let it run to operating temperature.Allow the expanding coolant fall into the basin.Once you see circulation in the rad you can slowly top the rad off.once you do this replace the rad cap and fill the reservoir bottle 3/4 ways to the top. Shut the car off and let it cool off filling the bottle as necessary.Hopefully this will cure your problem. Good luck :-)