Question about 2002 Pontiac Montana

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How to change thermostat on a 2002 Pontiac Montana

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Goodwrench4

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I believe the Montana has a 3.4 Liter V6 Engine.
This thermostat is located under the exhaust "crossover" pipe that runs between both the front and rear cylinder heads. Divers side.
Remove the heat shields (10mm bolts) and then the nuts on the exhaust studs. (6 total)
Two bolts hold the T stat housing to the intake.

Posted on Feb 24, 2010

Testimonial: "thankyou for this information, Do I need to remove the throtle above the thermostat housing?"

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Ronnie Houston

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SOURCE: 2002 Pontiac Montana Thermostat replacement

check the coolant level fiirst...if that is low it wont give you any heat.....to change the thermostat you have to follow the top radiator hose to the engine.at the send of it you will see a clamp take it loose...then you will see the thermostat housing its held in place by 2 bolts . once you remove them you have the thermostat....make sure you clean all the old gasket material off both the housing and mount.also make sure you get a new gasket.

Posted on Jan 29, 2009

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NOT ME

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SOURCE: I need to replace the

Where the upper radiator hose connects to the engine you will find the thermostat under that housing. You must drain the radiator and remove the upper hose. Then remove the 2 bolts holding the housing in place. Make sure to pay attention to which way the thermostat is mounted, spring up or spring down.

Posted on Aug 02, 2009

Anonymous

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SOURCE: replace thermostat 2003 pontiac montana

yes but with the right shaped wrenches and tiny hands it can be done without removing the exhaust crossover pipe

Posted on Oct 16, 2008

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1 Answer

My 2002 Pontiac Montana gets to hot in a short distance. I don't know what it is I have an idea it's either the thermostat or a blown head gasket not sure which one. So which one is it?


You would need to figure out if the thermostat is stuck closed, or not.
Most mechanics would either replace it or take it out and run the engine without it as a test. If the engine still overheats with the thermostat out, it could be a faulty water pump, restriction in the radiator, or other problems.
A blown head gasket should leak coolant out on the ground or into the engine.

Jul 28, 2012 | 2002 Pontiac Montana

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Jul 05, 2010 | 2002 Pontiac Montana

1 Answer

Help please need to change thermostate


OK FOLLOW YOUR TOP RAD, HOSE TO YOUR ENGINE THAT WILL BE THE THERMOSTAT HOUSING ON A 3.4 IT IS BEHIND EXHAUST CROSSOVER PIPE THE BOOK CALLS FOR YOU TO TAKE THIS OFF. ONCE YOU GET IEXHAUST OFF THERE IS TWO BOLTS ON THE HOUSING PULL THEM PAY ATTEN. TO WHICH WAY THE THERMOSTAT IS SETTING (VERY IMPORTANT) THEN PUT TOGETHER IN REVERSE. P.S I HAVE DID THIS WITH OUT PULLING EXHAUST PIPE.

Feb 12, 2010 | 2002 Pontiac Montana

1 Answer

2002 pontiac montana will not start when cold outside. No codes. any suggestions?


There could be many things that can cause this. I'll assume it runs great once it's warmed up. If so change your coolant sensor. It is near the thermostat housing close to the upper rad hose. This action will allow the sensor mode to change to it's proper position & alter engine timing to be correct for start up. Good luck!

Feb 10, 2010 | 2002 Pontiac Montana

1 Answer

2002 Pontiac Montana, No Heat, I put the temp control on


the cabel from the heat dial to the heater box behind the dash could be snaped or jamed thus not opperating the lever which operates the flap which open and closes the heat box next to the matrix. or if your coolant is brown in colour it could be your matrix is clogged with sedament and needs flushing out. or it could be your water pump not pumping coolant round your engine or it could be a knackerd thermostat i hope these will help you id start with the easyest first thermostat

Dec 17, 2009 | 2002 Pontiac Montana

1 Answer

I need to replace the thermostat on a 2002 pontiac montana. I have a Haynes repair manual for 2001 pontiac montana with picture location of thermostat housing but I cannot visually find it even using a...


Where the upper radiator hose connects to the engine you will find the thermostat under that housing. You must drain the radiator and remove the upper hose. Then remove the 2 bolts holding the housing in place. Make sure to pay attention to which way the thermostat is mounted, spring up or spring down.

Aug 02, 2009 | 2002 Pontiac Montana

1 Answer

2002 Pontiac Montana Thermostat replacement


check the coolant level fiirst...if that is low it wont give you any heat.....to change the thermostat you have to follow the top radiator hose to the engine.at the send of it you will see a clamp take it loose...then you will see the thermostat housing its held in place by 2 bolts . once you remove them you have the thermostat....make sure you clean all the old gasket material off both the housing and mount.also make sure you get a new gasket.

Jan 29, 2009 | 2002 Pontiac Montana

1 Answer

Looking for an engine diadram of where a thermostat housing is on


Is that an European Pontiac, is not such thing in USA call Montana

Jan 22, 2009 | 2001 Pontiac Montana

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