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Posted on Oct 14, 2009
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Coolant leak my 1990 chevrolet cavalier burns coolant. i replaced the thermostat housing, thermostat, and the gasket. i can think of alot of possibilities, water pump, head gasket, or the thermostat is in the wrong way. it has been a month and it is time to fix this problem. i can see moisture on the head on the driver front side and i can see i puddle of coolant on the top of the tranny. i went over every bolt that i could see and made sure that it was tight. i dont really know were to start on fixing this.

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  • Posted on Oct 14, 2009
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I think you got a head gasket leak,,,if its buring coolant the only thing that will burn it is a leaking head gasket,,its probably leaking into the cylinder and burning it and leaking externally where you see coolant on the tranny,,,replace the head gasket,,,

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2014 chevrolet cruze 1.8l what can cause a coolant leak some where the thermostat housing?
there has been a recall on some year cruz about coolant leaks. Check with NHSTA.gov to see if you are included. If not you will have to replace housing hoses and any plastic connections around thermostat housing that carry coolant.
Chevy Cruze Antifreeze or coolant leaks typically appear in the thermostat housing of affected vehicles, though it can also leak from the recovery tank house or the throttle body heater inlet pipe in cars with 1.8L engines
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1997 cavalier 2.2 auto, coolant leaking a steady stream, it's running to the left of the main hose that goes into the engine on the top. Is there a gasket on the block other than the head gasket??
Are you referring to the top radiator hose that goes into the thermostat housing? If so then yes you have an o-ring seal on the bottom of the thermostat housing.
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Mar 03, 2012 • 1997 Chevrolet Cavalier
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Where is the thermostat located on a 1998 cavalier 2.4?
Things You'll Need:
  • Wrenches and sockets
  • Torque wrench
  • Thermostat and gasket
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  • Antifreeze
  • Screwdriver
  1. 1

    Follow the lower radiator hose to where it meets the thermostat housing. The thermostat housing is where the opposite end of the lower radiator hose mounts to the engine.

  2. 2

    Drain enough coolant from radiator until it is below the thermostat. Failure to do this will result in your antifreeze leaking out onto the ground.

  3. 3

    Loosen clamp and remove radiator hose from thermostat housing. Some antifreeze will leak out, so have some rags available.

  4. 4

    Remove the bolts holding the thermostat housing on and pull the housing from the engine. The gasket might make it a little difficult, so do not be afraid to pull hard. Do not strike it with any tools as you can crack it.

  5. 5

    Remove the old thermostat and note its alignment.

  6. 6

    Place a rag in the thermostat's mounting hole so no gasket material can enter the engine and then scrape the gasket from the housing and the engine.

  7. 7

    Install the new thermostat in same position as old one.

  8. 8

    Reinstall the housing and tighten down bolts snugly. Torque them with your torque wrench to 10 ft.-lbs. Make sure you do not over-tighten them.

  9. 9

    Reinstall the radiator hose to thermostat housing and tighten the clamp.

  10. 10

    Refill the radiator with coolant and start the engine, allowing it to reach normal operating temperature.

  11. 11

    Check for any leaks at hose connection and thermostat housing. You can tighten them as necessary to stop any leaks.

  12. 12

    Stop the engine and allow it to cool down completely then check the coolant level. Add coolant as required.

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Dec 08, 2010 • 1998 Chevrolet Cavalier
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How to replace a thermostat on a 1990-lexus ls 400
open the hood and locate the big hose that comes form the radiator on the top it is under the air channel cover that goes across the top of the radiator remove it and you will see the hose in the middle of the front of the engine remove the 2 bolts and be careful not to spill alot of your coolant or if it is hot to burn yourself once you get the thermostat housing off pop the old one out and put a new o ring or gasket in there with the new one tighten it back up and put the air channel back on and re fill the coolant start it check for leaks and you are good to go if there are no leaks.
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How do I remove the thermostat on a chevy cavalier 1998
this is copied from the autozone website.

CAUTION
If the radiator is filled to the top with coolant and the engine is run without the radiator cap in place, the coolant will expand and spill over as the engine warms up.
  • Drain some coolant into a clean container until the coolant level is below the thermostat housing.
  • Remove the upper radiator hose connection from the thermostat housing.
  • Loosen the housing bolts and remove the housing.
  • Remove the gasket and scrape it carefully from the surface of the housing and the mounting surface on the engine. If the gasket remains on either of the surfaces, there will probably bea coolant leak after reassembly. Some engines use a rubber O-ring to seal a thermostat housing.
  • Compare the size of the thermostat to the old one. They are of different sizes, types, and temperature ratings.
  • The temperature rating is stamped on the sensing bulb on the bottom of the thermostat. The temperature bulb faces the block.
  • When replacing a thermostat, be sure that the thermostat fits into the groove in the block or outlet housing. If the thermostat is installed upside down, the engine will overheat.
  • Install the gasket.
  • Reinstall the thermostat housing. Refill the system and run the engine or pressure test to check for leaks.
  • When the engine has reached operating temperature make sure the thermostat opens.
  • You should be able to see coolant circulating within the radiator.
  • Another way of checking thermostat operation is to feel the top of the radiator hose or use a thermometer or multimeter with a temperature probe to confirm that the coolant is warming up.
  • If the engine is overheating, but the top hose is still cool to the touch, the thermostat is stuck closed and must be replaced.
NOTE
When a paper gasket is used and the recess is in the thermostat housing, it is a good practice to position the thermostat into the recess and glue the gasket to hold it in place. If it falls out of its groove during installation, the outlet housing can be cracked or a coolant leak will result. Before tightening the water outlet housing, try to rock it back and forth to be sure it is flush. Housings are often cracked during this step.
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Mar 11, 2010 • 1998 Chevrolet Cavalier
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1answer

My cav is leaking coolant, I dont think its
It,s quite possibly the thermostat neck. Simple fix, keep the coolant level in check until you can get it to a mechanic on Monday.
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Mar 07, 2010 • 2000 Chevrolet Cavalier
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1answer

How to put a thermostat in a 2001 chevy cavalies
Follow the large hose coming out of the top of the radiator. That should take you to the thermostat housing. You need to place a container under the drain spigot on the radiator and drain a gallon or so of coolant from the radiator so that coolant doesn't run out when you remove the housing. Remove the housing (usually don't need to remove hose) and scrap clean both surfaces of the housing and the block. Take not of the position of the gasket and thermostat you are removing. Replace thermostat, put a small amount of gasket sealing material on both surfaces, put new gasket on and tighten the housing back down. Some engines have a small plug in2_bing.gif the housing. You have to remove the plug as you replace coolant back into the motor until you see coolant running out of the hole and then put the plug back in.

Here is a video that show the gist of changing one.
http://www.youtube.com/watch?v=RIC6Z4D6Q3E
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Dec 04, 2009 • 2001 Chevrolet Cavalier
0helpful
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Need location of thermostat ,over heating.
If you follow the top hose from the radiator to the motor you'll notice a housing where the hose meets the motor. Disconnect the hose and remove the two bolts holding the housing in place. Remove the housing and the thermostat is underneath. When you replace it make sure the old gasket is completely removed and replaced with a new one. If pieces of the old gasket remain you will nto get a good seal and will eventually end up with leaks.
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Nov 14, 2009 • 1997 Chevrolet Cavalier
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How do I replace the thermostat in my 1990 buick LeSabre?
Hello thank you for using FixYa.com for your answer my name is David .
This should help you out if you have any other questions please let me know.

  • Drain some coolant into a clean container until the coolant level is below the thermostat housing.
  • Remove the upper radiator hose connection from the thermostat housing.
  • Loosen the housing bolts and remove the housing.
  • Remove the gasket and scrape it carefully from the surface of the housing and the mounting surface on the engine. If the gasket remains on either of the surfaces, there will probably bea coolant leak after reassembly. Some engines use a rubber O-ring to seal a thermostat housing.
  • Compare the size of the thermostat to the old one. They are of different sizes, types, and temperature ratings.
  • The temperature rating is stamped on the sensing bulb on the bottom of the thermostat. The temperature bulb faces the block.
  • When replacing a thermostat, be sure that the thermostat fits into the groove in the block or outlet housing. If the thermostat is installed upside down, the engine will overheat.
  • Install the gasket.
  • Reinstall the thermostat housing. Refill the system and run the engine or pressure test to check for leaks.
  • When the engine has reached operating temperature make sure the thermostat opens.
  • You should be able to see coolant circulating within the radiator.
  • Another way of checking thermostat operation is to feel the top of the radiator hose or use a thermometer or multimeter with a temperature probe to confirm that the coolant is warming up.
  • If the engine is overheating, but the top hose is still cool to the touch, the thermostat is stuck closed and must be replaced.
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Nov 08, 2008 • 1990 Buick LeSabre
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