Question about 1997 Cadillac Seville

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Overheating and change engine oil ... oil was changed one week ?

STOP ENGINE! ENGINE OVER HEATED ... LOW COOLANT BUT THE THE COOLANT RESERVOIR IS FULL AND IT ALSO SAYS CHANGE ENGINE OIL, OIL WAS CHANGED FEW DAYS AGO.

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  • epifaniodele Nov 29, 2008

    I JUST CHANGED THE FOLLOWING:



    1.) ENGINE COOLANT TEMPERATRURE

    2.) ENGINE OIL LEVEL SWITCH

    3.) ENGINE OIL & FILTER

    4.) FILLED UP THE COOLANT RESERVOIR

  • butterfliesl Feb 23, 2009

    I have a 98 Cadillac that I just bought from a dealer about a month ago. Had the oil changed and all and they re calibrated the light so it wasn't on. Then next day it overheated and now say's change oil again. LOL. Did not have problem till I changed the oil. What can it be? also looks like the fan's are not comming on when it reaches 128 degrees. The water starts blowing every where... Please help.

  • drzoos May 06, 2009

    I bought a 98 Cadillac Seville that has engine overheating problem, we change thermostat, Water Pump, Radiator and engine is still over heating. Please help!!

  • Anonymous Mar 17, 2014

    Engine oil low sign will not stop flashing

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2 Answers

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  • Master
  • 1,952 Answers

Low levels of coolant can lead to problems related to engine overheating. Always maintain proper levels of coolant in the overflow coolant reservoir tank. ONLY! check the radiator when the engine is cold. Only add antifreeze and reinstall the cap properly. Always drain and refill your cooling system regularly.

Over heating can cause severe and catastrophic engine failure. While over heating, the pistons inside the engine swell in the cylinder block causing cylinder wall scoring, the cylinder heads will crack, and finally the engine block itself will crack. Check and service your vehicles cooling system regularly.

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A radiator is used to remove heat from the engine coolant through convection. Coolant is forced through the radiator hoses and into the radiator via the water pump. Inside the radiator many small tubes which are constructed with cooling fins transfer heat to the atmosphere. If the radiator becomes plugged it fails to transfer heat from the coolant causing the engine to over heat. This condition generally occurs gradually over time and will be more noticeable when climbing a grade or in warm climate. To check for this condition make sure the is engine cold, then drain coolant to lower the level in the radiator. The coolant level is lowered to allow visual inspection of the cooler tubes in the radiator core. If the radiator cooler tubes are plugged drain the cooling system completely and replace the radiator with new, reassemble to refill with coolant and recheck system.

Posted on Nov 29, 2008

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  • mohammed marika thambi
    mohammed marika thambi Nov 29, 2008

    The radiator fan may
    be functioning properly. Replace
    radiator fan assembly with new to repair problem.

  • mohammed marika thambi
    mohammed marika thambi Nov 29, 2008

    Your engine is
    equipped with an EGR valve, check operation to replace
    as needed.



  • mohammed marika thambi
    mohammed marika thambi Nov 29, 2008

    If your car is equipped with engine oil cooler
    that uses coolant to operate this would be a good place to start. Sometimes
    an engine oil cooler can act like a one way valve. When the engine is not running but still hot the cooling system
    still has about 15 pounds residual pressure forcing coolant into the engine. The

    GM manufactured 3.0 V6 in Saturn and Cadillac
    and VW products are prone
    the this problem. This problem can be repaired by replacing the engine oil cooler.
    Once the oil cooler has been changed you must

    replace the engine oil and filter
    and recheck.

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  • Master
  • 734 Answers

It seems like the radiator of your car needs attention. check for coolant level in it, when its cold. if les add some coolant and then see if the problem persists.
--than there are chances of chocking in the coolant pipes, may be they not reached to engine..  
--Check the chock,, that it is not turned on. 
--May be sum loosing nut in engine.

Posted on Nov 29, 2008

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  • futureloginn
    futureloginn Nov 29, 2008

    The cooling system in your car should automatically pull the coolant into the radiator as the engine cools. You possibly have a faulty or incorrect radiator cap or you may have a small leak somewhere in the cooling system allowing air back into the cooling system as the engine cools off. The cooling system must be air-tight in order to pull the coolant out of the overflow reservoir.
    have the cooling system serviced, flushing the radiator, replacing the thermostat and adding new coolant.


  • futureloginn
    futureloginn Nov 29, 2008

    You can verify if the thermostat is the culprit; when the same occurs, is coolant or vapor rushing back into the reservoir? If yes the overheated coolant is reaching the radiator; if not, then the overheated coolant is restricted to the engine side. The thermostat is not working properly.


  • futureloginn
    futureloginn Nov 29, 2008

    follow the link for more---
    http://www.aa1car.com/library/overheat.h...

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