Question about 2004 Pontiac Montana

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I have a 2001 pontiac montana heating gauge goes to hot but it does not over heat and we loose power sometimes we get heat and sometimes we dont we put in a new thermostat and waterpump and thermostat housing sensor and it still acts the same way the hoses are soft and full of antifreeze but we dont get heat

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  • 117 Answers

Did you bleed the coolant lines to let all of the air out? If there's air in the lines, you will have the issues you're describing.

Posted on Dec 30, 2017

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Posted on Jan 02, 2017

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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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SOURCE: How to remove heater core from 2000 Pontiac

Heater Core Cover Removal procedure
Remove the right instrument panel insulator. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Console.
Remove the left instrument panel insulator. Refer to Closeout/Insulator Panel Replacement - Left in Instrument Panel, Gauges and Console.
Remove the lower center console. Refer to Console Replacement - Front Floor in Instrument Panel, Gauges and Console.
Remove the console bracket. Refer to Bracket Replacement - Console Floor in Instrument Panel, Gauges and Console.
Remove the floor duct brace
Remove the floor duct

Remove the screws retaining the heater core outlet cover.
Remove the heater core outlet cover.

Remove the screws retaining the heater core cover.
Remove the heater core cover.

nstall the heater core cover.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the heater core cover retaining screws.

Tighten
Tighten the screws to 1.6 N·m (14 lb in).

Installation procedcure

Install the heater core outlet cover.
Install the heater core outlet cover retaining screws.

Tighten
Tighten the screws to 1.6 N·m (14 lb in).

Install the floor duct.
Install the floor duct brace.
Install the floor duct brace retaining nuts.

Tighten
Tighten the nuts to 10 N·m ( 89 lb in).

Install the console bracket. Refer to Bracket Replacement - Console Floor in Instrument Panel, Gauges and Console.
Install the lower center console. Refer to Console Replacement - Front Floor in Instrument Panel, Gauges and Console.
Install the left instrument panel insulator. Refer to Closeout/Insulator Panel Replacement - Left in Instrument Panel, Gauges and Console.
Install the right instrument panel insulator. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Console.


Posted on Aug 31, 2009

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2 Answers

My 2000 Montana gauge is showing that's over heating even when it's driven a short distance and when driven on the freeway it's not smelling like its over heating or there no steam coming


If the gas gauge does not work correctly and the temp gauge reads hot, you could have a problem with the instrument panel.
Both gauges get power from the same circuit, but each gauge is grounded by its own sending unit.
If the temp gauge is reading correctly, you could have air in the cooling system and it is not actually full of liquid coolant.

Apr 14, 2013 | 2000 Pontiac Montana

1 Answer

No heat but car does not over heat


If both heater hoses are getting hot, you may have a problem with a blend door under the dash. The blend doors direct air thru the heater core and the vents.

Dec 12, 2012 | 2001 Pontiac Montana

1 Answer

My 2003 pontiac montana keeps over heating


Check your catalytic converter..It's before the muffler..See if it's getting extra hot...That will make your car motor very hot.

Dec 06, 2017 | 2001 Pontiac Montana

1 Answer

No temp gage on montana van. fan starts on start up engine seems cold after it should be hot


Check the heat gauge sending unit. Or "engine coolant temperature sensor" as they call them these days. ECT. It should be somewhere near your thermostat housing. I hope that's the problem. Good luck.

May 19, 2009 | 2001 Pontiac Montana

1 Answer

1999 pontiac montana 3.4 heat ing problums


sounds like a blown head gasket to me.  Does the coolant smell like exhaust?

Mar 31, 2009 | 2001 Pontiac Montana

1 Answer

Temp gauge and gas gauge not working


I had the same problem with my 2001 Pontiac Montana and the intake manifold gasket. This is a major problem with these 3.4L engines, if you are in the states I'm pretty sure there is a class action law suite against GM for this. I had my manifold gasket replaced and it was about $1000 CAD. You need to get your vehicle looked at right away as this could cause major engine damage, coolant will leak into the engine and soon enough you will be replacing that too. Good Luck

Jan 04, 2009 | 2001 Pontiac Montana

1 Answer

Not hot enough


check the thermastat

Nov 23, 2008 | 2002 Pontiac Montana

1 Answer

Possible overheating, 2004 pontiac montana


Its definitly a bad reading, you would know if your vehicle is overheating, you can usually smell it right away.I would say its your temperature gauge sending unit is defective, check the wires to see if they are well connected or broken. ask a backyard mechanic for assistance.

Nov 19, 2008 | 2003 Pontiac Montana

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