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Removing and replacing thermostat - 1993 Buick Century

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Having a promblem taking off crossover exhaust pipe on a 2005 Buick rendezvous I tooken off the two front exhaust Then took bottom two bolt . But still fasten to something is there other bolts...


Thermostat? engine cooling?
2 engines, here, LYA adn LY7.
nobody here posts engine, why do that?
so ill post only for 1.
the LA1
here are the steps.
NO FSM Sux huh? nor an alldata.com account, why not that? 15 bucks?


STAT out.
Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.

Drain the coolant until the coolant level is below the thermostat. Refer to Cooling System Draining and Filling (Refer To List 1) .

Remove the crossover exhaust pipe. Refer to Exhaust Crossover Pipe Replacement (Refer To List 2) in Engine Exhaust.

Remove the radiator hose from the thermostat housing.

Remove the thermostat housing bolts and clean any sealer from the bolt threads.

Remove the thermostat housing and gasket.
remove STAT
next is crossover page.

Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection (Refer To List 1) in Engine Electrical.

Remove the throttle body air inlet duct.

Drain the coolant from the cooling system. Refer to Cooling System Draining and Filling (Refer To List 2) in Engine Cooling.

Remove the inlet radiator hose from the engine. Refer to Radiator Inlet Hose Replacement (Refer To List 3) in Engine Cooling.

Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement in Engine Cooling.



Remove the exhaust crossover heat shield bolts.

Remove the exhaust crossover heat shield.
  1. Remove the exhaust crossover pipe studs/nuts.
  2. Remove the exhaust crossover pipe.

end , remove.

now the bypass pipe FWD cars SUCK
  1. Disconnect the left engine mount strut from the engine.
  2. Remove the heater hose from the bypass pipe.
  3. Remove the thermostat bypass pipe to throttle body nut.
  4. Use the J 38185 in order to remove the thermostat bypass pipe hose clamps (1,5).
  5. Remove the thermostat bypass pipe to cylinder head nut (3).
  6. Remove the thermostat bypass pipe bolt (4).
  7. Remove the thermostat bypass pipe hose.
  8. Remove the thermostat bypass pipe.
sigh.....
why not log in to alldata.com
read the page then ask ques tons that are not clear.
and next time post the engine type.
above is just 1 engine.

Jun 18, 2014 | Cars & Trucks

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

1 Answer

How to get the thermostat housing to disconnect. We have taken all bolts loose but will not come apart.


Not sure if you have the 2.7L or the 3.5L so I'll post for both sizes for you:


2.7L Removal procedures
  1. Drain cooling system.
  2. Remove radiator lower hose from thermostat housing.
  3. Remove nuts from heater tube flange studs.
  4. Loosen starter bolt at heater tube bracket.
  5. Pull heater tube out of thermostat housing and position out of the way.
  6. Remove bolt and two studs.
  7. Remove thermostat housing, O-ring and thermostat.
  8. Remove thermostat housing bolts.

3.5L Removal procedures

  1. Drain cooling system.
  2. Raise vehicle on hoist.
  3. Disconnect electrical connectors from engine oil and power steering pressure switches.
  4. Disconnect radiator and heater hoses from thermostat housing.
  5. Remove thermostat housing bolts.
  6. Remove housing, thermostat, and gasket.
NOTE:
The OEM thermostat is staked in place at the factory. To ensure proper seating of replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to restake the replacement thermostat into the thermostat housing

May 07, 2011 | 2003 Dodge Intrepid

2 Answers

Replacing the thermostate


drain out coolant in a drain until below thermostat level follow radiator hose to engine cylinder block to thermostat housing.remove thermostat housing than remove thermostat.replace with a new o-ring on thermostat before installing new thermostat.make sure thermostat housing surface and engine block surface clean.before installing new thermostat.

Aug 16, 2010 | 1997 Isuzu Trooper

1 Answer

Need to find where the thermastat is on a 2003 cadi


It is in the rear of the engine by the firewall and the intake manifold will need to be removed to gain access t it.

Engine Coolant Thermostat Replacement (LA3, LY9) Removal Procedure
  1. Remove the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .

  2. 790876.gif
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  3. Complete the following in order to remove the thermostat from the thermostat housing:
  4. 2.1. Depress the ears on both sides of the thermostat. 2.2. Rotate the thermostat until it clears the retaining feature of the housing. 2.3. Release the pressure from the thermostat. 2.4. Pull the thermostat from the thermostat housing.
Installation Procedure

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  1. Complete the following in order to Install the thermostat into the thermostat housing:
  2. 1.1. Align the thermostat pin to the thermostat housing orifice. 1.2. Depress the ears on both sides of the thermostat. 1.3. Rotate the thermostat until it aligns with the retaining feature of the housing. 1.4. Release the pressure from the thermostat.
  3. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .

Jul 10, 2010 | 2003 Cadillac CTS

1 Answer

How to replace thermostat


300M, Concorde, Intrepid, LHS, 1998-2004 - Thermostat Removal & Installation 2.7L Engine
  1. Disconnect negative cable.
    CAUTION Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
  2. Drain cooling system.
  3. Remove radiator lower hose from thermostat housing.
  4. Remove nuts from heater tube flange studs.
  5. Loosen starter bolt at heater tube bracket.
  6. Pull heater tube out of thermostat housing and position out of the way.
  7. Remove bolt and two studs.
  8. Remove thermostat housing, O-ring and thermostat.
  9. Remove thermostat housing bolts.
To install:
  1. Clean gasket sealing surfaces.
    NOTE Install thermostat with the bleed valve located at the 12 o'clock position, between tabs on seal.
  2. Install thermostat and seal into thermostat housing .
  3. If removed, install two studs.
  4. Install thermostat, thermostat housing and O-ring and bolt. Tighten attaching bolts to 105 inch lbs.(12 Nm).
  5. Lubricate new heater return tube O-ring with coolant.
  6. Position heater return tube flange over two studs. Install nuts.
  7. Tighten retaining nuts to 53 inch lbs.(6 Nm).
  8. Tighten starter bolt to 40 ft. lbs. (54.3 Nm).
  9. Connect the lower radiator hose to the thermostat housing. Install hose clamps.
  10. Refill cooling system.
  11. Inspect for leaks.
  12. Connect negative cable.
3.2L & 3.5L Engines
  1. Disconnect negative cable.
    CAUTION Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.

  2. Drain cooling system.
  3. Raise vehicle on hoist.
  4. Disconnect electrical connectors from engine oil and power steering pressure switches.
  5. Disconnect radiator and heater hoses from thermostat housing.
  6. Remove thermostat housing bolts.
  7. Remove housing, thermostat, and gasket.
    NOTE The OEM thermostat is staked in place at the factory. To ensure proper seating of replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to restake the replacement thermostat into the thermostat housing.
To install:
  1. Position gasket on thermostat and housing.
  2. Install thermostat housing, gasket and mounting bolts onto block. Tighten attaching bolts to 105 inch lbs. (12 Nm).
  3. Install radiator hose.
  4. Install bypass hose.
  5. Connect electrical connectors from engine oil and power steering pressure switches.
  6. Connect negative cable.
  7. Fill cooling system.
  8. Inspect for leaks.
  9. Lower vehicle on hoist.

Hope helps with this (remember rated this) Good luck.

Feb 02, 2010 | 2001 Chrysler 300M

1 Answer

Replacement of thermostat 2001 alero


Thermostat replacement on 3.4 liter, Not the thermostat housing is between the Throttle body and exhaust crossover. If you have small haves and the right tools you can remove the two botls without removing the crossover and throttle body. The bottom bolt to the thermostat does not have to come all the way out, there is a cut out on the housing so you can slid it out. Good luck and take your time.

  1. Remove the air cleaner and duct assembly.
  2. Drain the coolant until the coolant level is below the thermostat.
  3. Remove the crossover exhaust pipe.
  4. Remove the radiator hose from the thermostat housing.
  5. Remove the thermostat housing bolts and clean any sealer from the bolt threads.
  6. Remove the thermostat housing and gasket.
  7. Remove the thermostat.
  8. Install the thermostat.
  9. Install the thermostat housing bolts and tighten them to 18 ft. lbs. (25 Nm).
  10. Install the radiator hose to the thermostat housing.
  11. Install the crossover exhaust pipe.
  12. Install the air cleaner and duct assembly.
  13. Good luck...
  14. Fill the cooling system.
  15. Install the thermostat housing and gasket.
  16. Clean the mating surfaces.

Jan 28, 2010 | 2001 Oldsmobile Alero

1 Answer

Have heating problem thermostat replaced


Thermostat replacement on 3.4 liter, Not the thermostat housing is between the Throttle body and exhaust crossover. If you have small haves and the right tools you can remove the two botls without removing the crossover and throttle body. The bottom bolt to the thermostat does not have to come all the way out, there is a cut out on the housing so you can slid it out. Good luck and take your time.

  1. Remove the air cleaner and duct assembly.
  2. Drain the coolant until the coolant level is below the thermostat.
  3. Remove the crossover exhaust pipe.
  4. Remove the radiator hose from the thermostat housing.
  5. Remove the thermostat housing bolts and clean any sealer from the bolt threads.
  6. Remove the thermostat housing and gasket.
  7. Remove the thermostat.
  8. Install the thermostat.
  9. Install the thermostat housing bolts and tighten them to 18 ft. lbs. (25 Nm).
  10. Install the radiator hose to the thermostat housing.
  11. Install the crossover exhaust pipe.
  12. Install the air cleaner and duct assembly.
  13. Good luck...
  14. Fill the cooling system.
  15. Install the thermostat housing and gasket.
  16. Clean the mating surfaces.

Nov 11, 2009 | 2001 Oldsmobile Alero

1 Answer

Replace the thermostat on 2002 GMC Envoy


4.2L Engine the thermostat and the neck where the hose goes on is one unit $25 at autozone
  1. Remove the necessary coolant from the radiator.
  2. Remove the alternator, Loosen the outlet hose clamp at the thermostat housing. Remove the outlet hose from the thermostat housing.
  3. Remove the thermostat housing bolts.
  4. Remove the thermostat housing from the engine block.
  5. Clean all of the surfaces of the thermostat housing.
  6. Clean the sealing surface of the engine block.

Dec 29, 2008 | 2002 GMC Envoy

1 Answer

How to replace the thermostat in my 2001 pontiac sunfire


Drain some of the coolant until you are sure it will not spill over when you remove the hose.
Remove the hose from the radiator .(Top) Hose. follow the hose to the thermostat housing. Remove the hose by removing the clamps.the thermostat is located in the housing. remove the bolts holding the thermostat housing. remove the housing. be careful to notice the position of the thermostat. Make sure you get the proper degree thermostat . Ask the vendor. give as much info as possible. mainly the size of the engine. remove the thermostat. You will get a new gasket with your new thermostat. Clean off the sufaces of the thermostat housing before installing the gasket.use a little grease to hold the gasket in place. and reinstall the new thermostat. replace housing and hose and refill with antifreeze/coolant. i hope this works for you and you vote for my answer.

Dec 18, 2008 | 2001 Pontiac Sunfire

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