Question about 1966 Ford Mustang

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1978 Ford Mustang II 2.8L V6 Thermostat Replacement.

The thermostat is in the lower radiator hose housing and I am not sure wich way it faces. Wich way does the water flow through the engine?

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  • captainbill1 Jul 23, 2008

    There is no answer in your reply to my question. You were no help at all to my question. Maybe I am not clicking on the right area for the answer to my question .

  • Anonymous Mar 31, 2014

    cannot find where the thermostat housing is on the 2.5tdi .have followed the top radiator hose but cannot find the housing



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Posted on Jul 23, 2008

  • Gabriel Simutiu
    Gabriel Simutiu Jul 25, 2008

    sorry about that. my internet browser froze so i got mad and sent that replt. my bad. the water flow backwards throught the engine. the thermostat faces backwards.



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1 Answer

Where is thermostat on 05 Chrysler 300 3.5 v6

Find the lower radiator hose where it leaves the radaitor. Follow it to the lower engine block. The lower hose is connected to the t-stat housing. See the NOTES below for special instructions.

To Remove:

  1. Disconnect the negative battery cable.
    Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
  2. Drain the cooling system.
  3. Raise and safely support the vehicle.
  4. Detach the electrical connectors from the engine oil and power steering pressure switches.
  5. Disconnect the radiator and heater hoses from thermostat housing.
  6. Remove the thermostat housing bolts.
  7. Remove the housing, thermostat, and gasket.

    NOTE The OEM thermostat is staked in place at the factory. To ensure proper seating of the replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to re-stake the replacement thermostat into the thermostat housing.

    To install:
    1. Thoroughly clean the gasket mating surfaces.
    2. Position a new gasket on the thermostat and housing.
    3. Install the thermostat housing, gasket and mounting bolts onto block. Tighten attaching bolts to 105 inch lbs. (12 Nm).
    4. Install the radiator hose.
    5. Install the bypass hose.
    6. Connect the negative battery cable.
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Nov 13, 2013 | Cars & Trucks

1 Answer

How do you change thermostat in 03 cobra where is the thermostat

4.6L Engine - replacing thermostat

CAUTION Never remove the radiator cap under any conditions while the engine is running, or while hot. Failure to heed this caution could result in cooling system damage or severe personal injury.
  1. Drain the engine cooling system until the coolant level is below the thermostat.
  2. Detach the lower radiator hose, the return hose and the degas bottle hose from the thermostat housing.
  3. Remove the two mounting bolts, then remove the thermostat housing.
  4. Remove the O-ring and thermostat from the housing. Discard the O-ring.

  5. archaeology_16.jpg
Figure - exploded view of thermostat and Housing - 4.6L engine

To install:

NOTE To prevent installing the thermostat with an incorrect orientation, the housing contains a positioning slot. Install the thermostat so that the bridge part protrudes into the housing, not into the intake manifold.
  1. Position the thermostat and a new O-ring on the housing, then install the housing.
  2. Install the two mounting bolts, and alternately tighten them to:
    1. 4.6L SOHC engines 15-22 ft. lbs. (20-30 Nm).
    2. 4.6L DOHC engines 89 inch lbs. (10 Nm).

  3. Connect the lower radiator hose, the return hose and the degas bottle hose to the housing.
  4. Fill the cooling system, then start the engine and check for leaks.
  5. If necessary, top off the cooling system overflow reservoir.

  1. Drain the engine cooling system.
  2. Remove the air cleaner outlet pipe.
  3. Remove the 2 thermostat housing bolts and separate the lower and upper thermostat housings.
    1. Discard the thermostat O-ring seal and remove the thermostat.

To install:

NOTE Lubricate the O-ring seal with clean engine coolant.
  1. Install a new thermostat with the smaller plate facing upward and the O-ring seal.
  2. Position the lower and upper thermostat housings together and install the 2 bolts. Tighten to 89 inch lbs. (10 Nm).
  3. Install the air cleaner outlet pipe.
  4. Fill and bleed the cooling system.

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How to put a thermostat in a 89 mustang

The thermostat is under the housing where the upper radiator hose connects to the engine.

Remove some coolant from radiator so the level is lower than the thermostat. Remove the upper radiator hose. Remove the 2 bolts holding down the housing. Take note of how the thermostat is in the housing so you can put it back the same way. You didn't say which engine you have and it's different for some of the engines. Clean area and use new gasket with RTV sealant on both sides of the gasket. If there is a rubber o-ring replace with a new one. Put in new thermostat and reassemble. Refill coolant and done.

Feb 12, 2011 | 1989 Ford Mustang

1 Answer


1. Make sure the engine is cool.
2. Using a clean bucket disconnect the lower radiator hose and carefully drain around 1 gallon off coolant then reconnect hose.
3. Follow the upper radiator hose to the engine where it's connected to the gooseneck on the engine.
4. remove the 2 bolts holding the gooseneck and lift it up to remove the thermostat making a mental note on how it was installed.
5. Clean both sides of the gasket surfaces, install new thermostat in the same position it was removed and replace O ring(only use a Motorcraft replacement to avoid having fit issues) alternate tightening bolts until tight.
6. Refill radiatior to proper level.
7 Leaving the raditor cap off, start the car turn on the heater and let it warm up keeping an eye on the coolant level, it will go down once the air works it's way out of the cooling system.
8. Top off the system and tighten radiator cap. Check the coolant level several times during the week, there may still be some air left in the system.

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1 Answer

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the 1993 caravan had two engines offered a 2.5L 4cylinder and a 3.3L v6........on the 2.5L the thermostat is located on the front of the cylinder head were the top radiator hose attach's.
remove the top hose were it attach's to the thermostat housing and the remove the thermostat housing and lift out the thermostat and replace with the new one making sure the spring on the thermostat is facing the engine replace the thermostat housing and top radiator hose and remove the bleeder screw from the top of the thermostat housing and fill radiator with new antifreeze. when you see antifreeze coming out the bleeder hole replace the bleeder screw.

The 3.3L v6 also has the thermostat at the front of the cylinder head were the top radiator hose attach's the thermostat housing the procher is the same except for bleeding the radiator, to bleed the cooling system remove the coolant temp. sensor it is located just below the thermostat housing and fill radiator with new antifreeze until the antifreeze starts coming out the coolent tempt sensor hole them reinstall the sensor and top of radiator.........GOOD LUCK

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Instructions Things You'll Need:
  • Container
  • Jack and jack stands or wheel ramps (if needed)
  • Screwdriver
  • 13mm socket or wrench
  • Thermostat and gasket
  1. 1

    Turn the drain valve at the bottom of the radiator counterclockwise to drain the coolant from your Ford Taurus into a suitable container. Depending on the size of the container, it may be necessary to lift the front end of your Taurus with a jack and lower it onto jack stands, or use wheel ramps.

  2. 2

    Follow the upper radiator hose to the point where it meets the thermostat housing at the front of the intake manifold. Loosen the hose clamp and pull the radiator hose off the water connection on the thermostat housing.

  3. 3

    Take out the two bolts on the thermostat housing cover with a 13mm socket or wrench and remove the cover. Clean any old gasket residue from the inside of the thermostat housing cover. Pull out the old thermostat.

  4. 4

    Insert the new thermostat into the thermostat housing with the spring-side facing into the engine. Install the new thermostat gasket. Use a spray adhesive to hold the gasket in place, if desired.

  5. 5

    Reinstall the thermostat housing cover. Tighten the bolts to 89-124 in. lbs. Reattach the upper radiator hose to the thermostat housing. Make sure the drain valve on the radiator is closed.

  6. 6

    Fill the radiator with new or reserve coolant. Start your Ford Taurus and allow it to warm up to its normal operating temperature. Check hoses and connections for leaks and tighten hose clamps to stop any leaks, if necessary. Add more coolant as needed.

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3 Answers


Follow the hoses leading from the radiator to the block -- upper hose first. Where the hose connects to the block there is a housing -- the thermostat is in that housing.

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