Question about 2001 Pontiac Montana

1 Answer

2000 Montana heater problems. Only get very little heat in warmer weather. Temp guage doesn't always move. A/C and air flow are both fine. What could this be?

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 44 Answers

Your thermostat may be stuck open. Your cooling system could be low on coolant, but if that was the case your temp gauage should still move.
Would probably start with a thermostat-you may even have trouble code stored for the thermostat(P0128).

Posted on Oct 03, 2009

Testimonial: "I also had a flush done because they kept saying it wasn't the thermostat but I am going to get the thermostat replaced anyways. Thanks."


1 Suggested Answer

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2001chevy mailbuheater won't work,my heat Gage isn't weather, , but" I can take out two relays and it works , but then the car over heats.why? What is the problems

What relays are you removing? If you remove the radiator fan relay, the vehicle will overheat. Does the temp guage move at all/very little? IF so suspect a thermostat problem. A thermostat that is stuck open will cause little/poor heat as well as the temp guage to stay on the cold side

Nov 29, 2015 | Cars & Trucks

1 Answer

Heater not blowing warm air

the windstar has a problem with heater control doors

Nov 30, 2011 | 2000 Ford Windstar

1 Answer

No heat for me and my daughter 201 ford taurs everything you can think of has been done to this car please help

i hate no heat. ford taurus 2001 are a problem sometimes with heat issues.on the firewall there are heater hoses that get clogged,pinched,and sometimes it's just a bad heater core. you said everything you can think of has been done?[replaced heater core? flushed the radiator? are the cooling fans coming on? is radiator full of coolant? have you took the cap off to be sure?like i said,i hate no heat. i'm still thinking.thermostat new?the blower works but only blows cold air?ok if thermostats good,radiator is full,blower works,radiators full,cooling fans coming on, no engine overheating but temperature is fine,let's do this for a short winter time solution only!in the front of your car with the hood up.look at the radiator,ok,in front of the radiator,place a peice of cardboard in front of radiator on the bumper side. think i'm crazy right? try this. cut just a small peice of cardboard about half the size of the radiator and insert it in FRONT BUMPER SIDE of the radiator, this will give you emegency heat,it will have to come out when the temperature outside warms up because it will make your car overheat.for sure.but in cold weather,it's a sure thing to bring the heat up inside the car. you are restricting the air that flows through your radiator while the cars moving down the road,do not let car idle as it will heat up,as long as you're moving you will be safe,keep an eye on your temp. guage as you may have to make an adjustment to the size of the cardboard. yep i was a truck driver for many years and know so well how cold the road is. i kept my cardboard handy in the winter and never got cold. you do have an existing problem with your heat,and unless you deal with it soon,you'll need those cardboard boxes and duct tape for a minute.if you don't beleive me,try'll be toasty in no time,just watch that temp guage and you'll be fine. thank you for choosing and by the way,let me know how it works for you,i love to hear that i've assisted someone,somewhere.

Jan 22, 2011 | 2001 Ford Taurus

1 Answer

My heater will not get warm

Check your collant level If your radiator is full then you can place carboard in from and over the lower third of the radiator to block the air flow. Watch your temp guage to be sure you don't over heat the engine. If it still does not heat up pproperly you can block more of the air flow as l;ong as the neging temp guage is not showing it running hot. If it runs too hot remove some of the carboard allowing more air flow. THe proimary reasom for the heater not putting out warm air is low coolant, blocked water flow to the heater core or a bad thgermostadt (wrong thermostadt; one that opens at too low of a temp, defective thermostadt trhat is blocked open or even a missing thermostadt. Regardles what you do just be sure to watch the temp guage as you can do serious damage to your engine if you overheat it too much. Again, be sure you have the radiator topped off properly before you start

Feb 10, 2010 | 2001 Ford Taurus

1 Answer

I have a pontiac montana 2000 my problem is i dont have warmth in front of in my heater and behing it is very warm

There are a couple of possible problems Carole.
First one is there may be a blockage inside the heater core causing poor flow of the coolant from the engine which gives you the heat.
If this is the case the core will need to be flushed out or possibly replaced.
Second problem may be the door that is supposed to move inside the heater box that changes the air flow from cold to hot may not be working properly. The controls may be defective or the door is seized.
Because your heater in the back is working well the thermostat and the coolant level should be OK.

Jan 23, 2010 | 2000 Pontiac Montana

1 Answer

From canada,heater blows warm heat in cold weather thermo replaced heater hoses are hot

one thing to remember about these particular engines is how to bleed them and that the casting when these are made leave behind some "mud" that can cause the same issue. start by flushing the system with a good chemical flush (follow the directions, about $10 U.S.) and when bleeding turn the heat on to high allow for engine to warm up with the resevoir cap off (please be careful).once the vehicles temp guage begins to rise, note the level in the resevoir and add if neccessary. replace the cap and hold to about 2000 rpms for a few minutes (not allowing the temp to get a little above half). note the temp coming out of the vents. there is a little bleed screw on the thermostat housing. it is brass so be careful not to damage this piece. when pouring in the coolant open this bleeder and allow for fluid to flow until no air bubbles are visible. then procede on. this should cure the issue as long as there are no other control issue faults (interior). cheers

Jan 21, 2010 | 2003 Chevrolet Malibu

1 Answer

Plenty of air but no heat one side of dash use to blow hot air. Now neither side blows hot air. 2000 jeep grand cherokee coolant is fine driver side seat heater doesn"t work air bag light comes on every...

Check to see that the blend door linkage is hooked up. Doubtful it is heater core, as you had heat to one side and not the other. Check coolant control valve linkage, verify it is moving the coolant valve from off to on when you switch temperature from cold to hot. Verify you have coolant flow to the heater core by feeling the heater hoses where they enter the firewall. If all checks out well, then look at hvac controls individually.

Jan 06, 2010 | 2000 Jeep Grand Cherokee

2 Answers

My 2000 s10 chev does not blow hot air on heat.the heater core is clean.the ac works fine.when you move heater control to heat just luke warm air comes out with temp at 195


May 07, 2009 | 2000 Chevrolet S-10

1 Answer

I have no heat in my 2000 expedition. Is it the heating coil? Or could there be another problem?

Is the blower fan for the heater going on, but only cold air? If the fan is working, but no hot air situation, 1st check the coolant level, if it's low, the coolant won't flow thru the heater core, so little or no heat. If level is ok, what does the engine temp gauge indicate? Is the engine running normal temp range, cold, hot? Let me know answers to these questions so I can help u.

Dec 08, 2008 | 2000 Ford Expedition

Not finding what you are looking for?
2001 Pontiac Montana Logo

280 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts


Level 3 Expert

85111 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides