Question about 2003 Pontiac Grand Am

1 Answer

2003 pontiac grand am heater isnt blowing hot air when engine is hot

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Pontiac Master
  • 21,873 Answers

Are both heater hoses hot ? Cooling system full ?

Posted on Nov 17, 2015

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have an 2003 pontiac grand am replaced the heater core but still blows hot for a bit than goes cold turn the temp knob and it blows hot again for a bit than back to cold


the blending door runs on vacume check your vac lines around the heater to make sure they are plugged in sounds like u turn it and it works for a bit until it loses vacume i believe the temp switch on the dash works off vac too so it might be your problem

Apr 04, 2013 | 2003 Pontiac Grand Prix

1 Answer

Heater isnt blowing warm air in 2003 grand caravan


Assuming the radiator is full of coolant, you are describing a faulty thermostat. The thermostat is closed when the engine is cold to restrict coolant flow until it warms up.

Feb 01, 2013 | 2003 Dodge Caravan

1 Answer

2005 pontiac grand prix had the radiator flushed


For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

---------------------------

Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.

Feb 03, 2012 | 2005 Pontiac Grand Prix

2 Answers

My in heater in a 2007 grand prix doesnt work the air blows but isnt hot temperture gauge looks fine an have changed out thermostat


You have a plugged up heater core. Try pulling the heater hoses of where they go into the firewall, put a garden hose with a spray nozzle in one hose and gently flush the system out. you will need to pull both heater hoses off to do this.

Feb 11, 2011 | 2007 Pontiac Grand Prix GXP Sedan

1 Answer

Is there some type of fuse on my 2003 Dodge Grand caravan that I may need to change if it isnt blowing warm air, when the heat is on?


Hello, if its not blowing hot air its probably either the thermostate is stuck open or your heater core is stopped up.

Dec 15, 2010 | 2001 Dodge Grand Caravan

1 Answer

Heater not blowing hot air will blow cold air


Make sure that the pipe is not blocked and the shift to hot is opening the valves to the blower unit. If this is choked , blocked or not reacting , the section must be checked and flushed out for free water flow.
So remove from the line from the engine and use an external water line to test.

Sep 28, 2010 | 2003 Pontiac Grand Am

2 Answers

2003 Grand Prix not blowing hot air. Does the heater coil need to be replaced? If so where is it located?


If the heater coil was bad, it would be leaking radiator fluid... probably into your dash/floorboard (depending on where it is installed in your model car). There is a switch that diverts the hot radiator fluid through the heater coil when you want heat. There is also an air diverter valve that helps to mix the hot and cold air. The fluid valve is controlled by the A/C settings control. The one that you use to choose between heater/air conditioner/vent/ defrost. The air diverter is controlled by the temp mixing controller. The most simple explanation is that one of those valves or the controller of one of those valves is not working. If the hot water cant be diverted through the heater coil, the coil can't exchange the heat (warming the air). If the air diverter (hot/cold controller) cant move to add heat, then all you will feel is air from the vent side (from outside) or from the A/C cooling the air.

I would guess that its either a controller or one of the valves themselves. Odds are, it is a controller. That tends to be what malfunctions first.

Feb 25, 2010 | 2003 Pontiac Grand Prix

1 Answer

Grand cherokee heater blows cold air


Check the coolant level, sounds like you may be slightly low....Be sure heater is on high when filling the system....Look for any air bleeds...

Dec 06, 2009 | 2003 Jeep Grand Cherokee

2 Answers

Replaced the heater core. now i cant get good heat


the heater control valve is likely crusted shut ...replace that and any hoses that where crimped for a long time to heater core and backflush system with heater open full...also be sure head units cables vacuum lines and electrical were not disturbed when you tore out heater core

Jan 13, 2009 | 1997 Pontiac Grand Am

Not finding what you are looking for?
2003 Pontiac Grand Am Logo

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

Marvin
Marvin

Level 3 Expert

85223 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

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

Answer questions

Manuals & User Guides

Loading...