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1999 Oldsmobile Cutlass 3.1 L Replacing Thermostat Do i have to remove section of exhaust manifold to replace thermostat?

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6ya6ya
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Posted on Jan 02, 2017

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  • 169 Answers

SOURCE: oldsmobile silhoutte 2000 thermostat

Follow the upper radiator hose down to the thermostat housing. there should be 1 bolt holding it in place. it is not easy but you have to remove that 1 bolt,remove the housing and replace the stat. assy.. carefull the stat doesn't move during reinstallation.

Good luck

Posted on Aug 31, 2008

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johnny5846
  • 379 Answers

SOURCE: 1999 Buick Century thermostat question.

patience , and a 13 MM wrench , you gotta get your arms in there deep , that lower bolt does not need to come all the way off , the thermostat housing has a slot at the bottom for easier access , loosen it about 3.4 of the way and you can get the housing out , experience says a premium thermostat will give you grief trying to reinstall , get a regular duty thermostat .reverse procedure.

Posted on Jan 02, 2009

wireguy212
  • 1627 Answers

SOURCE: 1994 Oldsmobile Cutlass Ciera V6-3100 3.1 L

Just follow the top rad hose to the engine.It will end up at the thermostat housing.The thermostat is under the thing the upper rad hose goes to and once you have drained down the radiator some then just unbolt it and put in ther new thermostat[with a new gasket of course after you scrapped all the old gasket off].

Posted on Dec 08, 2009

  • 1 Answer

SOURCE: location of thermostat on a 1994 oldsmobile cutlass

follow the raidiator hose on the top of the motor . it should be at the end of the hose .(motor side)

Posted on Jan 03, 2009

  • 2920 Answers

SOURCE: I need to replace my

follow the top radiator hose to the engine,,,you will see a clamp on the end of the hose take it off and pull the hose out of the way...there are 2 bolts you have to take out to get to the thermostat and when you put the new one in make sure you clean all the old gasket off both parts and make sure you buy a new gasket if it dosent come with the thermostat

Posted on Jan 31, 2009

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1 Answer

How do I remove radiator?


Hi, Sorry I have to say that if you need to ask how to replace a radiator, you will need help from someone who knows how. It's not a trivial job. Having said that, the problem may be relatively simple. It's not uncommon for the radiator thermostat to cause overheating symptoms and or produce symptoms of leaking. Plus it's a lot easier to replace than the radiator. What you could do is take the thermostat out just for testing reasons. A lot of people do that and then never put it back. But your should have a thermostat because your car will take a lot longer to heat up to normal temperature without it and also likely cost more in fuel to run. Okay, to change the thermostat: Make sure the car engine is cool to cold. Don't try to remove it after driving. It can be dangerous. There is a danger of getting burnt by boiling hot water if you ignore this advice. Once you are sure the car is cold, take the radiator cap off. Check the coolant levels while you are looking. Partially drain coolant. Remove the hose to the manifold, remove the thermostat. Also check out a few sites that show information on your brand and model of car. EG: http://www.2carpros.com/questions/oldsmobile-cutlass-1989-oldsmobile-cutlass-how-to-replace-thermostat - This site shows details on how to do it. Rgds, Dave.

Mar 04, 2014 | 1999 Oldsmobile Cutlass

1 Answer

Where is the thermostat located on my 1999 oldsmobile alero with a 2.4 engine


LOOK UNDER THE EXHAUST MANIFOLD HEAT SHIELD.YOU WILL SEE THERMOSTAT HOUSING WITH THE COOLANT INLET PIPE CONNECTED TO IT.

Feb 18, 2011 | 1999 Oldsmobile Alero

1 Answer

99 alero overheats. then blows the fluid back out the overflow. is the thermostat shot and froze shut or open? used to v8's, where is the thermostat in this 4cyl?


THERMOSTAT STUCK CLOSE.REMOVE EXHAUST MANIFOLD HEAT SHIELD.YOU WILL THERMOSTAT HOUSING WITH COOLANT INLET PIPE GOING TO HOUSING.THERMOSTAT IS IN THE HOUSING.

Jan 13, 2011 | 1999 Oldsmobile Alero

1 Answer

Where is the thermostat


THE 2.4 ENGINE THERMOSTAT LOCATED NEAR THE EXHAUST MANIFOLD YOU HAVE TO REMOVE MANIFOLD HEAT SHIELD TO GET TO IT. THE 3.4 AND 3.1 THERMOSTAT UNDER LOWER INTAKE MANIFOLD ON DRIVER SIDE.YOU HAVE TO REMOVE THROTTLE BODY UNIT AND COOLANT LINES HOOK TO IT TO MAKE EASIER TO REMOVE THERMOSTAT HOUSING TO REPLACE THERMOSTAT.

May 15, 2010 | 1999 Oldsmobile Alero

1 Answer

How to change the thermostat


Alero, Grand Am 1999-2005 Thermostat - Removal & Installation 2.2L Engine
  1. If equipped with an automatic transaxle, remove the exhaust manifold, as outlined in this section.
  2. Drain the cooling system.
  3. Remove the thermostat housing to water pump feed pipe bolts.
  4. Remove the thermostat housing to water pump feed pipe.

    d1db35e.jpg
    Fig. Thermostat mounting-2.2L engine
  5. Remove the thermostat.

To install:
  1. Install the thermostat.
  2. Install the thermostat housing to water pump feed pipe.
  3. Install the thermostat housing to water pump feed pipe bolt. Tighten the thermostat housing to water pump feed pipe bolt to 89 inch lbs. (10 Nm).
  4. If equipped with an automatic transaxle, install the exhaust manifold, as outlined in this section.
  5. Fill the cooling system.

3.1L Engines
  1. Disconnect the negative battery cable.
  2. Drain the cooling system to a level below the thermostat housing.
  3. Remove the air cleaner assembly.
  4. Disconnect the surge tank line from the thermostat housing.
  5. Remove thermostat housing-to-intake manifold attaching bolt and nut, then remove the housing.
  6. Remove the thermostat.

To install:
  1. Clean all gasket surfaces completely.
  2. Insert the thermostat in the intake manifold.
  3. Attach the thermostat housing to the intake manifold.
  4. Install the mounting bolt and nut. Tighten to 18 ft. lbs. (25 Nm).
  5. Install the air cleaner assembly.
  6. Connect the surge tank line to thermostat housing.
  7. Refill the cooling system.
  8. Connect the negative battery cable, remove the radiator cap, then start the engine. Allow the engine to run with radiator cap removed, until the upper radiator hose becomes hot (thermostat open). With the engine idling, add coolant to the radiator until the level is up to the bottom of the filler neck.
  9. Install the radiator cap, making sure the arrows line up with the overflow tube.

3.4L Engine
  1. Drain the cooling system.
  2. Remove the air cleaner.
  3. Remove exhaust crossover pipe.
  4. Disconnect the surge tank line fitting from the coolant outlet.
  5. Remove the thermostat housing to intake manifold bolts.
  6. Remove the thermostat housing outlet and thermostat
  7. Clean the mating surfaces.

To install:
  1. Install the thermostat and housing outlet.
  2. Install the thermostat housing bolts. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Install exhaust crossover pipe.
  4. Connect the surge tank line fitting to the coolant outlet. Tighten the fittings to 15 ft. lbs. (21 Nm).
  5. Install the air cleaner.
  6. Fill the cooling system.
  7. Inspect the system for leaks.
Hope this help (remember comment and rated this).

Apr 04, 2010 | 1999 Oldsmobile Alero

1 Answer

Need a diagram for the area of the hermostathousing and water outlet 4 cylinder,we think something is missing


THERMOSTAT HOUSING IS LOCATED NEAR THE EXHAUST MANIFOLD.YOU HAVE TO REMOVE THE EXHAUST HEAT SHIELD TO GET TO IT.YOU WILL SEE THE THERMOSTAT HOUSING WITH COOLANT INLET PIPES GOING TO IT.

Mar 31, 2010 | 1999 Oldsmobile Alero

2 Answers

Where is the thermostat on a 1991 olds cutlass ciera 3.3 v-6


Top right hand side of the motor, follow top rad hose into manifold and loosen two bolts to remove the therm. Note which way it comes out so you replace it correctly. Good luck

Dec 01, 2009 | 1991 Oldsmobile Cutlass Ciera

1 Answer

I have a leak on the thermostat gasket. Is it a quick fix?


Grand Am 1999-2005 - Repair Guide
  1. If equipped with an automatic transaxle, remove the exhaust manifold, as outlined in this section.
  2. Drain the cooling system.
  3. Remove the thermostat housing to water pump feed pipe bolts.
  4. Remove the thermostat housing to water pump feed pipe.

    acd006d.jpg

    Fig. Thermostat mounting-2.2L engine
  5. Remove the thermostat.
Check the seal.

For other engines (3.1L and 3.4L) visit autozone.com (free register).

I hope helped with this (remember rated this) Good luck.

Oct 21, 2009 | 1999 Pontiac Grand Am GT

2 Answers

Cant figure out how to change the thermostat on my 2003 Olds Alero.


  1. (This is for a 2.2L engine) If equipped with an automatic transmission, remove the exhaust manifold.
  2. Drain the cooling system.
  3. Remove the thermostat housing to water pump feed pipe bolts.
  4. Remove the thermostat housing to water pump feed pipe.
  5. Remove the thermostat.

Jun 24, 2009 | 2003 Oldsmobile Alero

2 Answers

Unable to locate thermostat on 1994 cutlass


follow the upper radiator hose to the motor and you will find the thermostat housing there

Apr 13, 2009 | 1995 Oldsmobile Cutlass Supreme

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