Question about 2000 Pontiac Grand Prix

1 Answer

Heater is not working properly.

I get warm air when the car is warmed up, but not very much. the higher I adjust the fan the cooler the air becomes. Note: I took my car to get the oil changed awhile back and they took my cabin filter out and showed me that it was dirty, but I had them put it back in because I figured I could replace it myself for cheaper. I dont know where the thing is located at. Thanks for any information you can give.
Also, is it possible that the cabin filter may be obstructing the mechanism that controls the heater core flow?

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

At operating temperature is you car at the middle mark in between 160F and 210F? If not your thremostat is stuck open not allowing your engine to warm up before the coolant from the radiator enters the engine. Any "CHECK ENGINE SOON". lights? Just had a similar prob. Changed the thermostat and light went ount at next drive!

Posted on Feb 08, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My heater on 2002 olds silhouette blows cold. from cold start water temp heats up properly. get slight warming in car but then blows cooler


If the fan is moving air at the proper velocity, it is most likely a clog in the heater core or the hose leading into it. Generally, there are 2 hoses about 1 inch in diameter going through the firewall. Those hoses go into a small radiator inside the cars passenger compartment. Go to YouTube and look for 2002 Silhouette heater core removal for specifics. If warm radiator water won't flow freely through the core, that's the problem.

Nov 15, 2017 | Cars & Trucks

1 Answer

Air conditioning not blowing cold


may have air trapped in it still or thermostat is not working properly..

Jan 26, 2014 | Hummer Cars & Trucks

2 Answers

The air coming from my heater in my 2007 Pontiac Grand Prix isn't very warm. What could be the problem?


Could be the thermostat in the engine is stuck open , but your engine temp guage would show that the engine is running cooler than usual. Could be a partially blocked heater core , low flow of hot coolant makes for cool air.

Feb 08, 2011 | 2007 Pontiac Grand Prix GXP Sedan

1 Answer

Engine heats up but takes a long time for warm air to blow. Once working, the thermostat works fine. Sometimes, warm air starts to blow and then goes cooler.


low fluid level or heater control valve may need replace..check hoses going to heater core...if cold...between heater control valve and heater core..replace control valve

Jan 11, 2011 | 2003 Toyota Matrix

2 Answers

When the car is idling, the heater blows out cool air but when the car is moving, the heater works fine


When the coolant in the heater core is hot from the engine and your fan is on hot air will blow through the hot fan coil, i figured it out, when i stepped on the gas i could here the coolant squeezing by the control or limiter valve, because the higher rpms make the belt spin faster which makes the water pump pump harder causing more pressure, so when u idle that hot coolant will cool down from the fan blowing on it, u need to find the control valve and open it up to full blast, then hot coolant will always be flowing through your heater coil. ;)

Dec 17, 2010 | 2008 Pontiac G6

1 Answer

Does not blow hot air


1st off check your (cold) radiator (not the overflow tank) make sure it's
full, next locate heater hoses at firewall with eng. warmed up hold both
hoses 1hose should be hot going into the the other just a little cooler
coming out when it's working right but if 1 hose is hot and the return
is just warm you may have a restriction possibly plugged heater core
now if both hoses are warm not hot it could be thermostat is not closing
properly there is also the heater ctrl. valve but i don't know if you have
a mechanical- electric or vacum operated valve.
ps do these tests with eng at operating temp. fan on med. temp set on
hot. any other ? gimme a shout good luck

Jan 13, 2010 | 2000 Jeep Cherokee

2 Answers

The heater in my 2006 Dodge Grand Caravan only blows warm air while on low. If the dial is turned to high it blows cold air. What is the problem?


It sounds like the heater valve is not operating. Find the valve on the engine firewall passenger side and manually open the valve. Find it by following the 3/4 inch heater hose to the firewall where it is connected to the valve. Most likely the cable ( or vaccum hose)from the temperature dial to the valve needs replacing.

Dec 31, 2009 | 2006 Dodge Grand Caravan

1 Answer

When my car warms up the heater blows out warm but gradually gets cooler and cooler after about 10 min. It will stay cold ( about three degrees above outside temp.) It does this on cold days. And after you...


It may be the valve that controls the amount of water entering heating core but I'm wondering if your engine thermostat isn't stuck open. This is what controls the coolant temperature in your engine. It closes off while engine is off. It will remain closed after you start your car until the water warms to a certain temperature then it starts to open enough to keep your car at the proper operating temperature. If it stick open then it will take a lot longer for the engine to heat up and on smaller cars might never heat up enough for your heater. If you live in very cold climates such as where I live in Wyoming, we have to change to a higher degree thermostat so we have a good heater when it's 30 below zero.

Be very cautious here but one way you can check this is to put a piece of cardboard in front of your radiator and stop the airflow that cools your engine coolant. THIS WILL CAUSE YOUR CAR TO HEAT UP AND CAN CAUSE ENGINE DAMAGE IF IT OVERHEATS. Don't completely cover the radiator but if your heater warms up when you put the cardboard in front of radiator it's a good sign that your thermostat is stuck open and needs to be replaced.

Dec 04, 2009 | 1989 Lincoln Town Car

Not finding what you are looking for?
2000 Pontiac Grand Prix Logo

122 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8826 Answers

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

Answer questions

Manuals & User Guides

Loading...