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Re: 1995 Cutlass Supreem keeps oveheating
The thermostat could be the problem or it could be air in the stystem ....on top left of motor you will see a pipe that comes up.. on top is a small bleder screw .... remove radiator cap fill to top with antifreeze .... open bleder until just antifreeze comes out ....if good it could be intake or head gaskets
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If your car is overheating when you drive it,but you have replaced and made sure the radiator fan motor is working and coming on,you have flushed the system and replaced all your cooling components,then you may have a blown head gasket.Check for a milky white look to your oil dipstick.If so,you have a blown head gasket.or you might also have an air pocket in your cooling system that you need to bleed out.Good luck.
A blown head gasket is usually easy to confirm. The head gasket prevents the engine coolant and oil from mixing under the head. If you have a blown head gasket, you should be able to see bubbles of water/cooland on the dip stick when you check your oil.
I do agree that with your heater taking a while to get warm, it probably has some build-up in the system that needs to be flushed out, before it causes other issues.
Drain and flush the cooling system...more than once if needed. Replace the thermostat with a 180 degree...the OE stat. is 200 degree. Clean the outside of the radiator and a/c condensor, make sure there is no debris in the cooling fins and they flow air freely. Fill system with 50/50 mixture. If it still attempts to overheat...check your cat convertor, it's clogged and creating too much back-pressure Hope this helps...
You should never replace a head gasket if you are not 100% sure that it needs to be done. Your mechanic should do a compression test to check for a blown head gasket.
I would have the system back-flushed and refilled with new coolant mix. Also check the temperature switch and cooling fan(s) to make sure they are working. Also check to make sure the AC coil in front of the radiator is not plugged with dirt, bugs, etc. and blocking flow to the radiator.
could be a cracked block engine.what i would do is put a tarp or old sheet down park vehicle on it and wait then when you check you can look on old sheet to see where its leaking and it will give you an idea where to look for the leek if it was head gasket youd have sludgey looking whitesh foam in the oil