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I have a leak on a hose that connects to thermostat housing.

Hello, I have just replaced my thermostat housing because it was cracked. It was still leaking so I went under car and saw it was leaking from the hose that connects to the housing. What is the name of that hose, and how can I replace it? My car is a 1998 nissan sentra, 1.6L. Thank you.

Posted by Anonymous on

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  • Cars & Trucks Master
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Radiator top hose or return hose, most likely cracked when you removed it to replace the housing. Undo the clamp at both ends of hose remove and replace.

Posted on Apr 19, 2015

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1 Answer

Car keeps overheating.


replace the thermostat housing and use hi temp gasket silicone.

Oct 09, 2012 | Hyundai Motor 1999 Elantra

1 Answer

How to change thermostat


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 stu

    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.ck 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

May 07, 2012 | 1998 Mercury Mystique

1 Answer

Hello jonah! i need to replace a thermostat on my 2004 chevy colorado, 3.5 litre engine can you tell me where it is located on my engine?


Check this procedure for Canyon, Colorado 2004-2005 - Removal & Installation
  1. Drain the cooling system.
  2. Raise and support the vehicle only high enough to access the thermostat housing through the wheelhouse.
  3. Remove the left wheelhouse liner.
  4. Remove the radiator inlet hose from the thermostat housing.
  5. Remove the thermostat housing bolts.
  6. Remove the thermostat housing from the engine block.
  7. Clean and inspect the thermostat housing.
  8. Clean and inspect the sealing surface of the engine block.
To install:
  1. Position the thermostat housing to the engine block.
  2. Install the thermostat housing bolts and tighten to 89 inch lbs. (10 Nm).
  3. Connect the radiator inlet hose to the thermostat housing.
  4. Install the left wheelhouse liner.
  5. Lower the vehicle.
  6. Fill the cooling system.
  7. Inspect all sealing surfaces for leaks after starting the engine.
  1. Drain the cooling system.
  2. Raise and support the vehicle only high enough to access the thermostat housing through the wheelhouse.
  3. Remove the left wheelhouse liner.
  4. Position the hose clamp pliers to the clamp to remove the radiator inlet hose from the thermostat housing.
  5. Remove the thermostat housing bolts.
  6. Remove the thermostat housing from the engine block.
  7. Clean and inspect the thermostat housing.
  8. Clean and inspect the sealing surface of the engine block.
To install:
  1. Position the thermostat housing to the engine block.
  2. Install the thermostat housing bolts and tighten to 89 inch lbs. (10 Nm).
  3. Connect the radiator inlet hose to the thermostat housing.
  4. Install the left wheelhouse liner.
  5. Lower the vehicle.
  6. Fill the cooling system.
  7. Inspect all sealing surfaces for leaks after starting the engine.
Hope helps (remember to rating this answer).

Oct 06, 2011 | 2004 Chevrolet Colorado

1 Answer

There is a leak at the water outlet housing wherethe overflow tubing connects to it. There is no gasket or o ring to solve this.. how do you fix it?


check the radiator hose going to thermostat housing.it could be leaking.if hose okay.thermostat seal more likely leaking, meaning you have to replace the thermostat with seal.if thermostat with new seal still leaking.thermostat housing has a small crack in it.need replacing.

Apr 12, 2011 | 1999 Oldsmobile Alero

2 Answers

Why is my thermostat housing leaking when i jus put a new gasket n sealeant on it


Hello dcougar.

Most often when I see this happen the thermostat has slipped out of place and the lip of the thermostat is caught in between the housing and the engine.
If this has happened check the housing carefully for cracks.

When installing a new thermostat I will often use some weatherstrip adhesive to hold the thermostat in place while installing the housing.

Also I see housings warped or corroded enough that they will not seal.
Place the housing on sandpaper or emery cloth a flat surface. Rub the housing with even pressure in a figure 8 motion to make the surface flat again.

If you need any more assistance please ask me in comments. Be glad to help.
Thank you for using FixYa.

KL

Feb 04, 2011 | 1996 Mercury Sable

1 Answer

Need instructions for replacing thermostat on a 2001 Grand Cherokee 4.7 litre


Do not loosen radiator drain **** with system hot and pressurized. Serious burns from coolant can occur.

NOTE Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse. If thermostat is being replaced, be sure that replacement is specified thermostat for vehicle model and engine type.
Instructions

  1. Locate the Cherokee's thermostat intake housing by following the top radiator hose to the engine. The hose connects to the thermostat intake. A second, smaller hose connects to the left side of the radiator hose. This is a bypass hose for the heater.
  2. Remove the two bolts that secure the Cherokee's thermostat intake housing to the engine with a socket and ratchet and lift the intake upward to drain the coolant in the hose back into the radiator.
  3. Remove the gasket and the thermostat from the engine and discard them. Wipe the mating surfaces of the thermostat intake housing and the engine off with a clean towel.
  4. Place the new thermostat, spring down, into the engine and place the thermostat gasket over the thermostat.
  5. Place the thermostat intake housing onto the thermostat gasket. Thread the bolts into the thermostat intake by hand to avoid cross-threading the bolts and then tighten them using a socket and ratchet.
Additional information:
  1. Clean mating areas of timing chain cover and thermostat housing.
  2. Install thermostat (spring side down) into recessed machined groove on timing chain cover.
  3. Position thermostat housing on timing chain cover.
  4. Install two housing-to-timing chain cover bolts. Tighten bolts to 115 inch lbs. (13 Nm).
    CAUTION Housing must be tightened evenly and thermostat must be centered into recessed groove in timing chain cover. If not, it may result in a cracked housing, damaged timing chain cover threads or coolant leaks.
  5. Install lower radiator hose on thermostat housing.
  6. Install splash shield.
  7. Lower vehicle.
  8. Fill cooling system.
  9. Connect negative battery cable to battery.
  10. Start and warm the engine. Check for leaks.
Good Luck and if this helps don't forget to vote.

Jan 15, 2011 | 2001 Jeep Grand Cherokee

3 Answers

Cannot find engine thermostat for 97 nisson pu 2.4 4cyl. engine


its usually where the top radiaotr hose ends on the engine.

Aug 26, 2010 | 1997 Nissan Pickup

1 Answer

How to replace thermostat?


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.

May 22, 2010 | 2000 Oldsmobile Alero

2 Answers

I have a 98 lincoln town car executive and I need to know how you change the thermostat


1. drain coolant
2. remove engine cover
3. remove the 2 bolts from water hose connection (upper rad hose connecting to)
4. remove o-ring and thermostat
5. repeat in reverse order

Feb 05, 2010 | 1998 Lincoln Continental

3 Answers

How to replace a thermostat on a 1990 Ford F150 xl lariat?


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. let me know if you need more...dc

Jun 24, 2009 | 1991 Ford F150

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