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Cooling system thermostat replacement - 1998 Audi A4

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  • Audi Master
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RAISE THE FRONT OF THE VECHICLE.AND SUPPORT IT ON JACK STANDS.REMOVE THE SPLASH FROM BELOW THE ENGINE.DRAIN THE COOLANT FROM THE RADIATOR.NOW V6 ENGINES .PLACE THE RADIATOR SUPPORT PANEL IN THE SERVICE POSITION.FOLLOW THE LOWER RADIATOR HOSE TO THE ENGINE.TO LOCATE THE THERMOSTAT HOUSING COVER. THE THERMOSTAT ON ON THE 4 CYLINDER ENGINES IS LOCATED ON THE DRIVER SIDE OF THE ENGINE AT THE BOTTOM OF THE WATER PUMP HOUSING.

Posted on Aug 03, 2009

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1 Answer

Replace thermostat in a 1997 Dodge Intrepid


The thermostat is an easy replacement. The part from the part store should be very inexpensive and is very easy to install. IMPORTANT: allow the cars cooling system to completely cool down before starting to work on it. Here are the steps to replace the thermostat:

1. Allow car to cool.
2. Place drain pan under radiator and allow for coolant to drain below the thermostat. Do not completely drain the system unless replacing the fluid.
3. Remove the hose clamp and hose from thermostat housing.
4. Remove the two bolts holding the housing to engine.
5. Remove the thermostat gasket and clean the gasket completely off the engine and thermostat housing.
6. Remove the thermostat and replace with new.
7. Place new gasket on with reassembly.

Oct 12, 2013 | 1998 Dodge Intrepid

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Thermostat sticking on 95 civic 1.5L d15b8 is 4 days old


Have you tried replacing the thermostat? If you are sure that it is the thermostat even if you have recently replaced it, I have seen defective thermostats when the lower level (cheapest) thermostat is used. Always replace your thermostat with a higher quality thermostat. It is well worth the extra few dollars not to have to do it again. Also you should flush (with cooling system flush) and fill your cooling system with the proper mixture of coolant to make sure there are no contaminants that could clog the thermostat and lead to a premature failure.

Jul 10, 2013 | Cars & Trucks

1 Answer

Recently had my thermostat changed and now fluid spills over from my reservoir. Almost daily. I then replaced the cap but it still happens? Does my car need a thermostat?


why was the thermostat replaced in the fist place? I suspect you have head gasket seepage, pressurizing the cooling system , pushing coolant out. have the cooling system "block checked" for combustion gases in the cooling system

Sep 16, 2011 | 2000 Ford Taurus

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2002 Buick LeSabre Custom. Cooling System had brown chiffon looking foam in radiator. Drained and flushed cooling system with water. Disconnected both heater hoses and forced water through in both...


The brown looking chiffon could be oil in the water. However, if you are sure the system is ok then I would check the actuator door motor on the heater and make sure it is allowing the heat into the car. Seems as if you have done as much as you can.

Apr 22, 2017 | 2002 Buick LeSabre

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.

Feb 20, 2011 | 2003 Ford Mustang

1 Answer

The thermostat is stuck open need to change it can,t find it on a 2004 chev blazer v4200


Engine Coolant Thermostat Replacement (4.2L Engine)
Tools Required
J 38185 Hose Clamp Pliers

Removal Procedure
Remove the necessary coolant from the radiator. Refer to Cooling System Draining and Filling .
Remove the generator. Refer to Generator Replacement .



Loosen the outlet hose clamp at the thermostat housing (1). Remove the outlet hose from the thermostat housing.



Remove the thermostat housing bolts.
Remove the thermostat housing from the engine block.
Clean all of the surfaces of the thermostat housing.
Clean the sealing surface of the engine block.
Installation Procedure




Install the thermostat housing to the engine block.
Notice: Refer to Fastener Notice in the Preface section.

Install the thermostat housing bolts.
Tighten
Tighten the bolts to 10 N·m (89 lb in).

Lubricate the inner diameter of the radiator hose with engine coolant.



Install the outlet hose to the thermostat housing (1). Secure the hose with the clamp.
Install the generator. Refer to Generator Replacement .
Fill the cooling system with specified coolant and concentration. Refer to Cooling System Draining and Filling .
Inspect all sealing surfaces for leaks after starting the engine.


102900_637656_1.jpg
102900_tstat_2.jpg

Feb 10, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Replacing a thermostat


Buick Park Avenue Thermostat Repair Recommendations Best Practices
  • The entire cooling system should be inspected and tested when the thermostat is replaced.
  • A high-quality OEM thermostat should be used. Poor quality thermostats may not function properly and can cause damage to the engine or components of the emission system.
Common Symptoms
  • A thermostat that is stuck closed will cause the vehicle to overheat.
  • If the new thermostat does not immediately resolve engine temperature problems, the cooling system needs to be checked for other issues.
  • A thermostat that is stuck open can cause the engine to run colder than normal and set the Check Engine Light. It may also cause poor fuel mileage and the heater to blow cool air.
The thermostat will be at the end of one of your radiator hoses that goes into the engine block; normally at the top of the engine.

Feb 04, 2011 | 1995 Buick Park Avenue

1 Answer

How do you replace a thermostat


WARNING: SCALDING HOT COOLANT, WATER OR STEAM
NEVER remove the pressure relief cap under any conditions while the engine is operating. Failure to follow these instruction could result in DAMAGE to the
cooling system or engine AND/OR personal injury. To avoid having scalding hot coolant or steam blow out of the cooling system or reservoir, use extreme care when removing the pressure relief cap from a hot cooling system or reservoir.
  1. Wait until the engine has cooled.
  2. Wrap a thick cloth around the pressure relief cap and turn it slowly (until the pressure begins to release.
  3. Step back while the pressure is released from the cooling system.
  4. When you are certain all the pressure has been released, (still with a cloth) turn and remove pressure relief cap .
REMOVAL

  1. Drain the engine cooling system so that the engine coolant level is below the water thermostat (8575).
  2. Raise vehicle on hoist. See General Information.
  3. Disconnect the lower radiator hose (8286) and degas bottle hose from the water inlet connection.
  4. Remove the two water inlet connection retaining bolts. Remove the water inlet connection.
  5. Remove the O-ring seal and water thermostat from the water thermostat housing. Inspect O-ring for damage and replace if necessary.
  6. If required, remove water bypass hose from water thermostat housing and remove water thermostat housing retaining bolts, water thermostat housing and O-ring from oil filter adapter (6881). Inspect O-ring for damage and replace if necessary.
INSTALLATION
  1. Install the water thermostat, O-rings, water thermostat housing (if removed) and water inlet connection as illustrated.
  2. Install and alternately tighten the retaining bolts. Tighten bolts to 20-30 Nm (15-22 ft. lbs.).
  3. If removed, connect the water bypass hose to the water thermostat housing.
  4. Connect the lower radiator hose and degas bottle hose to the water inlet connection.
  5. Lower vehicle.
  6. Fill the coolant with Ford Premium Cooling System Fluid E2FZ-19549-AA or-B (in Oregon, F5FZ-19549-CC, in Canada, Motorcraft CXC-8-B) or equivalent that meets Ford specification ESE-M97B44-A in a 50/50 mixture with water.
  7. Start the engine and check all hoses and connections for leaks. Allow the engine to warm up so that the water thermostat opens.
  8. Stop the engine. Top off degas bottle as required to maintain minimum cold fill level.

Jan 10, 2011 | 1997 Lincoln Continental

1 Answer

Replace thermastat where is it and i need a easy fix solution


2.0L & 2.4L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2. Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
    CAUTION This operation must only be performed on a cold engine.
  3. Drain cooling system to the thermostat level or below.
  4. Remove or disconnect the following:
    Coolant recovery system hose Thermostat/engine outlet connector bolts Inlet hose and coolant elbow from thermostat housing
  5. Remove thermostat assembly and clean sealing surfaces.

    240b2a6.jpg
    Fig. Thermostat and housing-2.0L and 2.4L engines

To install:
  1. Place the new thermostat assembly into the engine outlet connector. Align air bleed with notch on the cylinder head.
  2. Install engine outlet connector onto cylinder head and tighten bolts to 110 inch lbs. (12.5 Nm)
  3. Connect the coolant recovery system hose.
  4. Fill cooling system.

  1. Drain cooling system to the thermostat level or below.
  2. Remove the Coolant Recovery System (CRS) hose and thermostat/engine outlet connector bolts.
  3. Remove the thermostat assembly, and clean sealing surfaces.

    969cc63.jpg
    Fig. Thermostat assembly-2.0L engine


    f7f1b3d.jpg
    Fig. Thermostat assembly-2.4L engine

To install:
  1. Place the new thermostat assembly into the engine outlet connector.
    1. Align air vent upward with notch on the cylinder head (2.0L engine).
    2. Make sure spring side of thermostat faces cylinder head.

  2. Install the engine outlet connector onto cylinder head and tighten bolts to 110 inch lbs. (12.5 Nm)
  3. Connect the Coolant Recovery System (CRS) hose.
  4. Fill cooling system.

2.4L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system to the thermostat level or below.
  3. Remove the Coolant Recovery System (CRS) hose and thermostat/engine outlet connector bolts.
  4. Remove the thermostat assembly, and clean sealing surfaces.

    a1e1b65.jpg
    Fig. Thermostat assembly-2.4L engine

To install:
  1. Place the new thermostat assembly into the engine outlet connector.
  2. Make sure the spring side of the thermostat faces the cylinder head.
  3. Install the engine outlet connector onto cylinder head and tighten bolts to 110 inch lbs. (12.5 Nm)
  4. Connect the CRS hose.
  5. Fill the cooling system to the proper level.

Hope help with this (remember rated this post).

Apr 15, 2010 | 2002 Chrysler Sebring

1 Answer

How do you change the thermostst on 2004 L-6 trailblazer


Engine Coolant Thermostat Replacement (4.2L Engine)
Tools Required
J 38185 Hose Clamp Pliers

Removal Procedure
Remove the necessary coolant from the radiator. Refer to Cooling System Draining and Filling .
Remove the generator. Refer to Generator Replacement .



Loosen the outlet hose clamp at the thermostat housing (1). Remove the outlet hose from the thermostat housing.



Remove the thermostat housing bolts.
Remove the thermostat housing from the engine block.
Clean all of the surfaces of the thermostat housing.
Clean the sealing surface of the engine block.
Installation Procedure




Install the thermostat housing to the engine block.
Notice: Refer to Fastener Notice in the Preface section.

Install the thermostat housing bolts.
Tighten
Tighten the bolts to 10 N�m (89 lb in).

Lubricate the inner diameter of the radiator hose with engine coolant.



Install the outlet hose to the thermostat housing (1). Secure the hose with the clamp.
Install the generator. Refer to Generator Replacement .
Fill the cooling system with specified coolant and concentration. Refer to Cooling System Draining and Filling .
Inspect all sealing surfaces for leaks after starting the engine. 8387794.jpg

Dec 22, 2009 | 2004 Chevrolet TrailBlazer

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