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

Heater hose or heater core.


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


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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.


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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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