1997 Oldsmobile Cutlass Supreme Logo
shauna Posted on Mar 04, 2014
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No light comes on and the heater will blow cold and the overflow tank is low or empty so I add coolant and it blows heat again. when I had a oil change they said I had coolant in oil.it runs fine but

No light comes on like low coolant

1 Answer

john stanley

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  • Oldsmobile Master 499 Answers
  • Posted on Mar 04, 2014
john stanley
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Joined: Feb 10, 2014
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Its time to change the head gaskets . DON'T drive it or you'll be putting in an entire engine

5 Related Answers

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Jul 03, 2009

SOURCE: 95 cutlass supreme leaking coolant from what looks

Your heater core has gone bad and needs to be replaced, If you go to Auto Zone you can pick up a new heater core and they will have the step by step instructions to doing the job yourself. If your lucky, may be the radiator hose to the heater core has failed at the cores pipes and it's only the hose that needs to be replaced but thinking not. You can get by pass the heater core for now so you can still get around till you pick up the new Heater core. Follow the two hose that goes to the fire wall and disconnect both of them from the pipe from the firewall, then with a pipe and two clamps, connect the two hose together and that's how you by pass the heater core. Good luck friend and hope this helps. 

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Dar

  • 2007 Answers
  • Posted on Apr 05, 2010

SOURCE: I have a 1994 Olds Cutlass Supreme overheating

If it's the water pump, you should be able to see it dripping just behind the pulley. The seal on the water pump is usually what goes. If there is antifreeze drips all over the front of the engine, and it drips a bit after you shut it off, it likely is the water pump.
If it runs poorly when you first start it in the morning, however, you could still have a head gasket problem. If that is the case, you will see a lot of white exhaust, which is the cylinder blowing the antifreeze out. One thing you can do is run it with the rad cap off, and see if it continues to bubble. If it does, then your head gasket is leaking. I am assuming it is a V6, so keep in mind that you have 2 head gaskets. The other oine could be gone now if it wasn't replaced.

Anonymous

  • 15935 Answers
  • Posted on Jan 04, 2009

SOURCE: no heat

water pump has failed.

Anonymous

  • 3640 Answers
  • Posted on Dec 15, 2010

SOURCE: 95 cutlass supreme coolant circulates

try by changing the thermostat. if it sticks closed, coolant will be deverted to buy pass hose will not heat up. have a good one !

Anonymous

  • 266 Answers
  • Posted on Mar 27, 2011

SOURCE: recently purchased 1995 cutlass supreme

Not good news , and hate to tell you ,but the head gasket is blown between 2 cylinders. Had this happen to me .No white smoke, no coolant in the oil, but if the engine overheats in a short time ,You will notice the coolant will blow out the radiator ,if the cap is removed. Also if the engine is a quad 4 ,you also will need to change timming chain and tesionors. Tough job. If you bought from a dealer they should repair the problem. If not, I would consider engine replacement with a good used engine. It would save alot of work ,and in the long run ,a used motor ,with lower miles, would be the choice I would make. If you choose to repair old engine , there could be other issues. Warped or cracked head, damaged cylinder walls,ect... hope this will help in your decision.

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Related Questions:

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1answer

How do I fix a car that only blows cold air

I doubt it's a heater core.
first look in the radiator and make sure your coolant is full.
not just in the overflow bottle. a bad radiator cap may not allow coolant to refill the radiator . so the radiator can be low and you still have a full overflow bottle

so refill everything and drive it a few miles and see if your heat comes back.
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Heater keeps going cold when my overflow tank is empty?

You are probably losing your coolant through a bad head gasket in the engine. If so, you should be seeing a milky exhaust. However, you also may have a pinhole leak on one of the hoses - at operating temperature, the coolant will evaporate as soon as it hits the engine, and after stopping you may detect a glycol smell under the hood. A cooling system pressure test may help identify the problem.
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I have a 2007 nissan xterra. When I stop at a light or idle, the heater blows cold air. When I increase the RPM's the heater air warms up again. What could be the problem?

your coolant level is low in the overflow tank/pressure tank. the pressure tank is right by the washer fluid fill cap. its the white tank right behind the washer fill cap, which is blue. make sure you dont open the overflow tank when vehicle is hot. add coonalt into the white tank. you can seethrough the tank. the tank is glued together from 2 sections. lower and upper. you can see the seam when you look at it. fill coolant so its above the seam. that will do it.
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How much coolant do I add to top up if warning light comes on

NEVER OPEN THE COOLANT RESERVOIR WHEN THE ENGINE IS HOT!!!
If the coolant level gets too low, the air gets inside the cooling system and there's no proper circulation. Here's how you can fix it yourself: turn the heater on maximum temperature (inside the car), then start adding BMW coolant (it has to be the BMW coolant) to the overflow tank -cooling reservoir. Some models have a bleeder on the upper radiator house, so you have to loose the bleeder. The fluid will push the air out- also there may be a little of coolant coming out, which is O.K..
Next, tighten the bleeder after the coolant reaches the maximum level,close the reservoir and start the engine and wait till it warms up to the normal operating temperature or in other words, when the cooling fan (the fan is just behind the radiator) turns on and off. One more thing, there should be hot air blowing out of the heater inside your car. If it blows cold air, there's still some air in the cooling system and you should see a mechanic.If you don't, you might over-heat the engine.
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Why am I losing coolant and have no heat or air?

I would start by checking for coolant leaks. Common places would be in the waterpump or heater core. Heater cores can crack and leak. The heat from your vents inside the vehicle comes from air passing over the heater core, which is heated by the hot coolant flowing through the heater core. It acts in a similar fashion to your radiator, with the purpose of heat transfer. A coolant system that is low on coolant will not transfer heat through the heater core. Also, deposits from the coolant system can collect and plug the heater core which will restrict the flow and the amount of heat that is transfered to your heater. If you don't see coolant leaking externally, it may be leaking into the engine. this may be from a blown head gasket or warped head. If this is the case you may notice some whitish color smoke coming from the exhaust, as well as your coolant overflow/storage tank fluid level may increase.
The air conditioning is a seperate system and may be a seperate issue. The system contains liquid freon like a refrigerator. You can by recharge kits at your local autoparts store. If the kit works, you may find there is a leak in the system and you will loose cold air after some time. If thats the case, a certified dealer can fill the system with colored dye to help locate the leak. A bad compressor or evaporater can also cause a/c systems to fail.
1helpful
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Temperature/heat wont work/dashboard lights on and off

It sounds to me like you're low on coolant. When you checked the coolant level, did you actually open the radiator cap and make sure the radiator is full? The plastic tank you generally add coolant too is actually an 'overflow' or 'reserve' tank. There is a hose that runs from that tank to the top of the radiator so if the radiator gets low on coolant, more coolant -should- run in from the overflow tank. However in practice this does not always work. I have a Jeep that leaks coolant and experiences this exact same problem. Coolant will not run from the reserve tank into the radiator because the hose is plugged up, and whenever the radiator gets low on coolant the temp gauge will go real high and then drop, and the heater doesn't work well. This is because the cooling system of your car is supposed to be a closed system, full of coolant and no air. When coolant leaks out, the space it used to occupy is now occupied by air, which does not transfer heat well. When 'air' is passing through your cooling system, no heat can be transferred from your engine to the heater and radiator, resulting in a hot engine and no heat at the heater. Then when a pocket of water passes through the system, the temperature gauge quickly falls as the water absorbs the heat from the engine. The hot water that cools the engine is where the heater gets it's heat from as well, so when water passes through the heater core, the heater works, but when it's filled with air, it doesn't.
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Heater blowing clod air

the heater core behind the dash may be bad, it is the coolant tank for the heater system that is to say it is where the heat comes from. kinda pricey to have repaired at a dealership, if you can hear the fan turning but no heat, than it is a good possibility, or a vent hose has fallen off, get down and check under the dash
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My 2006 chev Impala (V6) blows cold air out of the heater until I raise the rpm to like 1500 (or so). Engine coolant overflow is empty but when I pull the rad cap off the rad is full. Could this be an air...

These cars easily get air trapped in the coolant system. Park the car somewhere so that you car get the right front of the car as high as possible. Take the coolant filler cap off and start the car. You should see air bubbles appear as it bleeds it self. Once coolant starts to overflow put the cap back on. It should be fine now but if not repeat again.
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Heater blows cold air

I had the same problem with the heater only working when accellerating. Found the overflow tank pick up tube was kinked. This of course made my coolant level low. So when the cars hot the coolant would push into the overflow, but when the car cooled the kink would prevent it from flowing back to the radiator.
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