Question about 1999 Pontiac Grand Am GT

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Thermostat I have a 99 pontiac grand am and I am unable to find where the thermostat supposed to go. I know that usually it fits inside the thermostat housing and the block but the opening on the block is to big for the thermostat to sit inside. Do I need any other parts?

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  • jaadam618 Mar 22, 2009

    i removed the thermostat housing out of my 99 grand am and there was no thermostat in it now im trying to put a new one in but it wont fit in the block. it wants to fall out so how do i go about getting it to stay in so i can put the housing back on. what a pain i need help. jaadam618@yahoo.com

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On the 6-cyl 3.4L, it's under the throttle body. Just follow the large hose from the top left side (driver's side) back to the engine.

Posted on Jul 09, 2008

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Where is the thermostat on my 2004 Pontiac grand am 4cylinder


Follow top radiator hose to engine. Thermostat usually inside the housing hose connects to.

May 07, 2015 | Pontiac Cars & Trucks

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Installing thermostat


Yes, usually there is a little recess the thermostat fits into. Check for proper direction, and which way is up. Instructions usually with new one. I recommend a new one. They're cheap.

Dec 01, 2013 | 2003 Pontiac Grand Prix

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Why won't the thermostat fit secure on the hole


the thermostat usually just fits in the groove of the housing, they aren't usually very tight as you can just pull them out by hand, make sure that you have the right one for your vehicle.....cheers.

Sep 10, 2011 | 2000 Pontiac Grand Am GT

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Where is the thermostat located on a 2001 pontiac grand am SE, 6 cylinder automatic


Follow the hose from the coolant reservoir to the engine. The thermostat is behind the housing where at hose connects. Below are instructions from autozone.com. Recommend you also read my post at http://www.fixya.com/cars/r5929960-s_thermostat, and thanks for using FixYa.


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.

Dec 20, 2010 | 2001 Pontiac Grand Am SE

1 Answer

Where to locate the thermostat on an 03 pontiac grand am?


Not sure which engine you have so please pick the appropriate engine:

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.

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Thermostat mounting-2.2L engine


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.

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.

Nov 01, 2010 | 2003 Pontiac Grand Am

2 Answers

Where is the thermostat located


This is the thermostat housing:


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The thermostat sits inside of it...which looks like this:


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These are the steps to remove and replace the thermostat:

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.

May 06, 2010 | 2000 Pontiac Grand Am GT

1 Answer

What years 3.1 engine will fit in 1998 pontiac grand prix


Unfortunately it's a (relatively) one year only engine (without major component changes). However, these will fit without those changes:

'97, '98, '99 Buick Century,

'98, '99 Lumina (car),

'98, '99 Grand Prix,

'99, Monte Carlo.

This is assuming that you have an (8th digit) "M" VIN. Off the top of my head.


Mar 07, 2010 | 1998 Pontiac Grand Prix

1 Answer

Where is the thermostat located on a pontiac grand am 2004 v6 3400


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.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Nov 23, 2009 | 2002 Pontiac Grand Am

2 Answers

Need to replace thermostat housing in a 2000 pontiac grand am 2.4L. I know where it is but I need to know about any precautions and what is involved in the process,


Engine should be cool

Catch leaking anti-freeze from thermostat housing hose when disconnected (if any)

Good idea to always disconnect negative battery cable anytime working under hood for extended period

Clean old gasket of block

These come to mind.

Charlie

Oct 01, 2009 | 2000 Pontiac Grand Am GT

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