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Check it when it is cold. If it smokes white smoke when you start it, you could have head gaskets leaking.

the pressure is still existant in the radiator..

Usually when the car leaks water when it is off it is because the water pump is weeping.... Starting to go out, you need to replace it

I have had a lot of experience with this one. The design of heater control valve is flawed. The valve snaps together and after a while the pressure in the coolant system will push the top up just enough to leak. As the inner spring gets weaker it leaks more. The replacement valve cost me less than $100 at Advance Auto and took about 2 hours to replace. The valve is located against the firewall on the passenger side of the car.

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โˆ™ 2015-07-17 17:55:25
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Q: What could cause a antifreeze leak when the car is turned off on a 1999 Cadillac Catera?
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Related questions

What would cause a 1997 cadillac catera to leak antifreeze pr water behind the passenger side front tire?

Heater hose or heater core.

What would cause a 1998 Cadillac Catera to shake when breaking?

roters need to be turned Most likely the rotors are warped from hard use- need replaced.

What would cause your 2001 Cadillac Catera to smoke and have a funny smell?

Rocker cover gaskets need to be replaced.

What could cause a 1998 Cadillac Catera to take off very slowly when you floor it?

I have 98 catera....and this was cause believe it or not by a blown fuse. If I remember correctly this was the automatic transmission control model fuse....I think it was rated at 20 under the driver side steering wheel...fuse relay....

What could cause a thumping noise when coming to a stop in a 1999 Cadillac Catera?

Front rotors are warped and need to be replaced. Could be an out of round disc brake rotor

Why would a 1999 Cadillac Catera have a fast idle while in park?

If the 1999 Cadillac Catera idles too fast, the cause could be a faulty idle stop solenoid. It may be damaged or it may have become loose. If it is idling rough or seems erratic, the problem could be a faulty EGR valve. Other problems could be a vacuum hose leak or a clogged PCV valve.

Where is the turn switch for a Cadillac Catera and if car started and ran but when stalled it will not start for a day could bad gas cause this?

This could be an indication of a failing crank sensor. GM has issued a recall for this and you shoudl be able to find out more information from any cadillac or GM dealer.

What are the effects of antifreeze mixing into the engine oil?

A bad head gasket is the most common cause of antifreeze mixing in the oil. The antifreeze will dilute the oil and it will eventually cause your engine to seize up.

What would cause a 1997 Cadillac Catera to leak antifreeze by the drivers side front tire and overheat?

1997 Cadillac Catera HelpMost cars have two radiator hoses. One is the upper hose (Usually located towards the top front of the cars engine and sometimes easier to see and get to to replace) and the second located below it toward the middle or side of the engine. Check your hoses first for any cracking, wearing, check to make sure that the clamps are tightened and not loose or broken and are properly placed on hose. If you keep having to replace the antifreeze every few days that is a good indicator that there is a good size leak and may be the cause of your engine overheating as well. The other problem may be that your radiator may have a crack in it and that would mean it definitely needs replacing. Also consider having your cars thermostat checked, this doesn't sound like it is the cause of your problem but is a good idea to have checked. Hope this Helps.Cheryl

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An antifreeze leak.An antifreeze leak.

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it could be the belt or pullys check the tensioner assembly

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Not advisable. Any relay that you could unplug could have a multiple purpose and removing the relay could cause other more serious problems. Len

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Cadillac catera have an interference and non-interference engine?

Interference engine be sure to change your timing belt every 60k miles if not your car is a ticking timebomb with a VERY short fuse it will bend your valves or could cause your engine to seize if the belt fails in any way

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Use the Gold antifreeze. It lasts longer and does not cause corrosion to the cooling system.

Can antifreeze coolant cause damage to catalytic converter?

yes it can

Is an overfilled way above MAX mark antifreeze reservoir tank will cause harm to the engine?

It should be ok as there is nothing too terrible in the coolant. Excess antifreeze will just overflow. Try and get some out. Antifreeze can cause paint issues if the concentration is high enough...RR

You have oil in your antifreeze and antifreeze in your oil should you drain it before using steel seal?

i have a 94 cadillac sls and i think i blew a headgasket thers oil in my antifreeze resovar and thers antifreeze in my oil whats the best thing to do does steel seal realy work should i drain both of thoes before i use it Yes, but any sealant that's to be used in the coolant system is for emergency situations. It will cause more problems in the long run than it will fix. From the sound of your problem, you need to see a qualified mechanic.

Can the loss of antifreeze cause you to lose your heat?

Yes, low coolant can cause a loss of heat in the cabin.

What will cause an engine to push antifreeze out of the resevore?

the most common cause would be a stuck closed thermostat.

Why would a 1997 Jeep Cherokee have rust colored antifreeze continuing after a flush?

Mixing the new red antifreeze with the green can cause it to look rusty and will form a sludge. If someone is topping off your antifreeze recovery tank during oil changes with the wrong product could be one cause.

2001 cadillac catera What would cause a coolant low light although the tank is filled to cold line and the engine is not over heating?

Bad sensor? There is a coolant temp. sensor that goes bad. Mine been on for over a yr doesnt mean it is low....just bad sensor.

What can cause a car to pour antifreeze out of automobile?

bad water pump

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