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Posted on Nov 09, 2017

Antifreeze leak by thermostat

Antifreeze leak by/around the thermostat housing- can't tell if the 2 lines into side of this housing are leaking or the stat itself. have no problem getting the stat housing apart and replacing stat and seal, but do I need to remove the 2 side lines and replace some kind of seal at this location? If so, how do you remove the lines?

5 Related Answers

Anonymous

  • 334 Answers
  • Posted on Jan 09, 2009

SOURCE: antifreeze leak

near? Or is it sending unit? because you can unscrew unit wrap with teflon tape and screw back in

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Abdi Jama

  • 119 Answers
  • Posted on Nov 08, 2008

SOURCE: 7mge have oil leak

hi if your engine 22R front engine first in side timing cover where engine bully fitted there is oil seal, next valve cover front side between cover and head there seal not like oil seal half cercle shap it makes leak also front side of the camshaft there is oil seal..

Anonymous

  • 2 Answers
  • Posted on Jan 10, 2009

SOURCE: Toyota Mr2 Automatic transmition problems

It sounds like maybe the torque converter might not be fully seated into the trans, try taking it out and re install and turn the converter clockwise then counterclockwise while keeping pressure on the front of the conv. until you feel three little clicks or thuds. When it is fully seated you should barely be able to get your fingers between the the bell housing and the converter. while you have the converter out check the front pump seal again for damage if it looks chewed replace it put some trans fluid on the hub that goes into trans, the shiney part then slide it in. Hope that helps also when installing the trans make sure you tighten the bellhousing bolts first then do the torque converter bolts, that way you won't accidently unseat the conv. You have to turn the flywheel to get to all the bolts make sure everything is tight and good luck.

Anonymous

  • 512 Answers
  • Posted on Feb 01, 2009

SOURCE: oil leak

a bolt goesthrough the centerof that housing that if memory serves me right is a t55 or t60 torx. it is a tight fit to get to and the bolt is hard to turn because it also has an oring on it

Anonymous

  • 508 Answers
  • Posted on Feb 26, 2009

SOURCE: intake manifold sealant repair now leaking maybe oil? coolant b4

You need to remove the thermostat housing again. Then you will have to extract the bolts you broke off. You will need to drill and tap them so you can use an easy out to remove the broken bolts from the threads. Then you can clean up both mating surfaces and replace the gasket and the thermostat. Check to make sure you did not crack the thermostat housing or you may have another leak when finished. They are usually aluminum and break easily if too much pressure is applied or they are corroded and weak.

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1answer

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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Could I have a bad but NEW thermostat ?

It is possible. When installing the new thermostat is the copper button on the engine side of the housing? It should be, I did this once and also on the second try, I didn't get the housing lined up correctly and broke the housing and had to buy another one.
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1answer

Step by step replacing the thermostat

Break free 2 bolts on thermostat housing, loosen hose going into housing and clamp, it will leak some antifreeze. Once the housing is taken off block clean off old gasket material from both surfaces. The block and housing, be careful not to scratch the surfaces. No sharp pointy objects, aluminum is soft. Then take the old thermostat out and put in the new one. Put gasket in place ,align housing and put , bolts in by hand first, so it doesn't cross thread. Just snug bolts and top off system with antifreeze . Start engine ,put on heat and run until thermostat opens. Check for leaks, tighten bolts 1/4 turn should be fine. Add antifreeze in overflow bottle if needed.
0helpful
1answer

How do i change my thermostat

Follow the upper radiator hose to the engine. There you will find the thermostat housing, usually two bolts hold it to the engine. Go to the bottom of your radiator ,at left or right side you will find the radiator drain, remove about two quarts of antifreeze into a catch pan. This will bring antifreeze to a level below the thermostat. Then go back to thermostat housing,remove two bolts, lift housing, remove thermostat, scrap off old gasket, reverse process. replace antifreeze. Start engine and check for leaks. GOOD LUCK FRIEND.
0helpful
1answer

Why do i have antifreeze leaking out from d my pullies?

You probably have a water pump that is leaking. There is what they call a weep hole at the bottom of the pump housing and this is where the coolant would leak out on to the front of the crank pulley which would possibly get in the belt pulley grove of the crank pulley and spread it around when the engine is running. You could have a leaking thermostat gasket or upper radiator hose which connects to the motor that is leaking. There is no antifreeze which circulates in your pulleys nor are they filled with antifreeze.
2helpful
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How do i replace my thermostat on my 2003 acura tl?

follow your upper radiator hose from the radiator back to the engine. At that point remove the hose and replace it. Put it back together , fill up the antifreeze and you are ready to go.
1helpful
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Anti freeze leak I hear hissing sound under neath fuel injection system

could be leaking at the top radiator hose going to thermostat, that is a hard spot to see leak remove the air filter and air filter housing look below throttle body you see thermostat housing, check for leaks around thermostat housing gasket and check for leak at the top radiator hose going to radiator and thermostat.if all is good check all radiator hoses for leaks check small coolant lines going to throttle body for leaks and check make sure bleeder screw on thermostat housing not loose it will leak also check around radiator and water pump heater bypass metal lines for leaks.
0helpful
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Leaking antifreeze. all hoes are okay. leaking around thermastatic area

my guess without seeing it, would be the thermostat gasket, there is normally a paper or rubber gasket that surrounds the thermostat housing, and by the way, change the thermostat at the same time, and you will keep your engine very happy
1helpful
2answers

Where is the thermostat

Please choose the correct steps for the size of engine that you have:

4.5L & 4.9L Engines
  1. Drain the coolant to a level below the thermostat housing.
  2. It may be necessary to remove the upper air filter assembly on some models.
  3. Remove the 2 bolts securing the upper thermostat housing to the lower housing.
  4. Remove the upper thermostat housing.
  5. Remove the thermostat and O-ring from the lower housing.

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Thermostat installation—4.5L and 4.9L engines

To install:
  1. Install the thermostat and a new O-ring to the lower housing.
  2. Install the upper thermostat housing to the lower housing. Tighten the thermostat housing bolts to 20 ft. lbs. (27 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

4.6L Engines
  1. Drain the coolant to a level below the thermostat housing.
  2. On some vehicles, access is easier if the front-end beauty panel and the air cleaner are removed.
  3. Remove the 2 bolts securing the thermostat housing to the intake manifold.
  4. Remove the thermostat housing.
  5. Remove the thermostat and O-ring from the housing.

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Thermostat installation—4.6L Engine


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Loosen the upper radiator hose clamp at the thermostat housing


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Remove the upper radiator hose clamp from the thermostat housing


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Remove the thermostat housing retaining bolts and . . .





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. . . remove the thermostat housing from the engine


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Separate the thermostat from the housing

To install:
  1. Install the thermostat and new O-ring to the housing.
  2. Install the thermostat housing to the intake manifold. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Install the air cleaner and beauty panel, if removed.
  5. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.
0helpful
1answer

Heater blowing cold air

If there is a internal antifreeze leak, there will be antifreeze mixed in your oil. Check your oil. If there is antifreeze in there, you probably have a bad head or base gasket. Worst case scenario is your block is cracked somewhere. Check your heater core and the lines as well. If the heater core is bad it will be leaking.
Check the thermostat housing for a leak. Sometimes
the antifreeze will leak from there, and burn on top of the exhaust instead of dripping onto the ground. Good luck
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