I have an '02 Pontiac Montana and it is over heating and blows out cold air. Yes the fluids are good and we just replaced the thermostat and it still is over heating and not blowing out heat.

Asked by Feb 03, 2015 at 09:11 PM about the 2002 Pontiac Montana

Question type: Maintenance & Repair

3 Answers

19,330

You have either an air pocket in the cooling system for the engine, a bad sending unit for the temp gauge/dash warning light, a blown intake gasket or blown head gasket.

2 of 2 people found this helpful.

I have a 2000 montana the heat don't work it does when is park but when I drive it for 15 min it blown cold air what it can be

19,330

A bad thermostat, a bad blend door motor, a broken blend door, plugged heater core. Check and see if you're low on anti-freeze, if it is low fill to proper levels in radiator and overflow bucket, then look for a leak(intake gaskets are EXTREMELY common on the 3.4 liter) If its not low let the van warm up, carefully grab the upper and lower radiator hoses. If they are both very warm/hot then move on the the heater hoses and do the same. If the radiator hoses are both not hot then its probably a thermostat. If the heater hoses aren't both hot then its most likely a heater core. If all of the hoses are hot then its probably a blend door, or blend door motor.

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

Montana

Looking for a Used Montana in your area?

CarGurus has 309 nationwide Montana listings and the tools to find you a great deal.

ZIP:

Search Pontiac Montana Questions

Pontiac Montana Experts

#1 Countrygal77
Countrygal77
Reputation 2,020
#2 Robert Reed
Robert Reed
Reputation 1,440
#3 Jim Space
Jim Space
Reputation 750
View All

Related Models For Sale

Used Toyota Sienna
224 Great Deals out of 29,699 listings starting at $1,495
Used Honda Odyssey
212 Great Deals out of 20,894 listings starting at $1,900
Used Chevrolet Venture
430 listings starting at $1,699
Used Chrysler Town & Country
272 Great Deals out of 16,150 listings starting at $900
Used Dodge Grand Caravan
165 Great Deals out of 26,543 listings starting at $2,300
Used Dodge Caravan
667 listings
Used Nissan Quest
64 Great Deals out of 2,759 listings starting at $2,499
Used Chevrolet Tahoe
556 Great Deals out of 31,361 listings starting at $1,500
Used Oldsmobile Silhouette
136 listings starting at $1,995
Used Nissan Pathfinder
279 Great Deals out of 22,990 listings starting at $1,499
Used Mazda MPV
3 Great Deals out of 323 listings starting at $2,500
Used Pontiac Grand Am
1,183 listings starting at $1,599

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.