Question about 2004 Pontiac Grand Am

2 Answers

Where is the bleeder valve located to bleed any trapped air from getting to the matrix? Why would I not be getting hot air to any of the vents?

Currently blowing cold air from all the vents, can select/change from floor to defroster, etc...both inlet and outlet heater core hoses are hot during normal running temps. The heat/temp selector knob seems to have no effect.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Cheetah:

    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 202 Answers

Which engine do you have? 3400 have a bleeder on the water outlet that connects to the upper rad hose. If both are hot I'd say low coolant so air is still in the system (if you rev it may get hot the back off to cold). If not then look into the blend door actuator or the switch controlling it may be bad.

Posted on Nov 12, 2014

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 61 Answers

Not sure if there is a bleeder valve on these. Not giving a description of what was going on makes it difficult.You may have a plugged heater core. Maybe low coolant. Sometimes it needs to be bled off with a vaccuum drawing the coolant through the heater core. Part of the problem is with these the heater core is higher than the cooling system so the coolant doesnt natrually flow into it, it takes some type of external force to make it go in. I have had luck getting the nose of the car up on car ramps to get the core lower and its naturally started flowing. That is if there is not an obstruction preventing it from doing so.

Posted on Nov 12, 2014

6 Suggested Answers

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 expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

james klgr
  • 362 Answers

SOURCE: 2002 montana getting overheated

sounds like a stuck thermostat. but check if the system has a bleeder screw if it does burp it and that will help also.

Posted on Dec 13, 2008

  • 57 Answers

SOURCE: 1994 pontiac firebird HAS NO HEAT

Okay. warm up vehicle, get radiator hoses hot.  Turn on heater, fan on low.  Grip both rubber heater hoses close to the firewall, from the engine compartment side.  They should be too hot to hold for long.  If they are not hot, then you have a lack of coolant circulation to the heater hoses.  If they are hot then access heater core, behind glove box area.  Blend door which moves as you chose HOT or Cold, should be cable controlled, move the controls and be sure the door is actually moving. Keep me posted 

Posted on Dec 17, 2008

dgjtex
  • 405 Answers

SOURCE: 2004 Pontiac Montana blows cold air in defrost

There is a mix damper inside your duct that controls the heat over heater core and ac evaporator that to your floor and one to your defrost. it is probable an electric actuator, that is not functioning properly. If yu can locate it and manually move it, you might have to remove the actuator motor first, you should be able to figure out your problem, I hope this helps! merry Christmas!

Posted on Dec 22, 2008

emissionwiz
  • 75797 Answers

SOURCE: i want to flush the heater core

Take off the hoses at the bulkhead/firewall that go to te heater core, use a garden hose and back flush the core by forcing water through the smaller of the 2 hose nipples, if the water runs right through then you have a heater air temp control door actuator problem

Posted on Dec 24, 2008

  • 4 Answers

SOURCE: Air comes out of the defroster and floor vents but not the air co

under the hood on the firewall there is a square boxlike cover beside the maxifuse&relay. there is a vacucum hose there that controls the vent shutoff had same problem with my 93 bonneville sse when purchased, check to see it has no cracks or has pulled out of rubber connecter .

Posted on Mar 28, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

2.5l. Where is the bleeder valve for the cooling system?


Check on top of thermostat housing, there could be a bleed screw on that. If not there locate two heater pipes that travel in the engine bay toward the dashboard. These lead to heater matrix inside the car. If you follow these with your hand the higher one may have like a plastic screw moulded into it. If its there loosen it ( but not right out. Cos you will drop it) also be extremely careful as this is very hot water! Leave it open until only water (coolant) comes out then tighten it up good and tight. Once might not be enough. It could also be somewhere on radiator body but high up. Low level bleed screws don't work as air always rises

Dec 26, 2015 | 1999 Mazda 626

1 Answer

Still running hot, can a intake vacuum hose make this car run hot, and does the bleeder screw need to be all the way open to bleed out all air


Vacuum leaks can (in some cases) make an engine run lean, and that will indeed make it run hot and potentially even burn valves. Modern computer controlled systems usually adjust fuel mix for minor leaks, and set codes for major vacuum leaks that can't be compensated for. Bleeder screw does not IMHO need to be open all the way, however I have seen some cars where the valve is not located at the high spot of the cooling system such that air can be trapped somewhere.

Jul 06, 2015 | Cars & Trucks

2 Answers

I have a 2003 honda Odyssey. Does it have a releif valve or nut to release trapped air in my cooling system? I just drained my radiater and replaced my therastat and its running hot when im driving.


locate the coolant temperature sensor nearto the thermostat housing. Unplug, loosen then plug back up. To bleed, loosen slightly to release trapped air. Once air is relieved, only liquid will come out at this time the air bleeding is done.

Dec 21, 2014 | 2003 Honda Odyssey

1 Answer

How to bleed clutch 2007 compass


GRAVITY BLEEDING CLUTCH HYDRAULIC CIRCUIT

1. Verify fluid level in brake master cylinder. Top off with DOT 3 brake fluid as necessary. Leave cap off.

2. Raise vehicle on hoist.

3. Remove bleed port protective cap and install suitable size and length of clear hose (4) to monitor and divert fluid into suitable container.

4. Open up the bleed circuit by turning the thumb screw (3) counter clockwise this will start the air purge and fluid fill process.

5. Lower vehicle, but only enough to gain access to and fill the brake master cylinder. NOTE: Do not allow clutch master cylinder to run dry while fluid exits bleed port.

6. Top off brake master cylinder fluid level while air is purged and fluid drains from bleed port. Continue this until no air bubbles are seen and a solid column of fluid exists.

7. Close hydraulic bleed circuit, remove drain hose and replace dust cap on bleed port.

8. From driver's seat, actuate clutch pedal 60-100 times.

9. Apply parking brake. Start engine and verify clutch operation and pedal feel. If pedal feels fine and clutch operates as designed, stop here. If pedal still feels spongy or clutch does not fully disengage, excessive air is still trapped within the system, most likely at the master cylinder.

10. Top off brake master cylinder fluid level with DOT 3 brake fluid as necessary.

POWER BLEEDING CLUTCH HYDRAULIC CIRCUIT

1. Remove reservoir cap and connect bleeder cap to reservoir. NOTE: Use Bleeder Cap/Modified reservoir cap adapter Snap-on #901-059 or equivalent.

2. Connect service filling machine to bleeder cap. NOTE: Use Service Filling Machine/Brake power bleeder Brake power bleeder or equivalent.

3. Service filling machine should be pressurized to at least 2.5 bar (36 PSI).

4. Remove dust cap from bleeder valve and connect the transparent bleeder hose to bleeder valve.

5. Place the other end of hose in the bleeder container to capture the used fluid. The end of the hose MUST be submerged in the DOT 3 brake fluid.

NOTE: Use Bleeder Container To capture hydraulic fluid and Transparent Bleeder Hose To route fluid to container.

6. Turn on the service filling machine.

7. Crack open the bleeder valve (3).

8. Allow fluid to flow out of bleed port until no more air bubbles can be seen in the transparent bleeder hose.

9. Once fluid is free of air bubbles; make 15 quick actuations between clutch pedal stop positions.

10. Close the bleeder valve and disconnect the service filling machine.

11. To remove remaining air, actuate pedal 10 times slowly between pedal stop positions.

12. Check clutch pedal to see if vehicle is properly bled.

13. If vehicle is not properly bled, repeat procedure.

14. Remove bleeder cap from reservoir and replace reservoir cap.

15. Disconnect transparent bleeder hose from bleeder valve and replace dust cap.

Oct 15, 2013 | 2007 Jeep Compass Limited

1 Answer

2003 lincoln aviator water boiling and car overheating


Check to coolant level after it cools off and check to see if coolant-water mixture is correct. If those are ok. You could have to much air in the coolant system. Most radiator caps will automatically vent the air out of the coolant system. It could be as simple as a coolant cap that gone bad. Or you may have a air bleed valve on it and you need to bleed the air out manually. To bleed it you will have to crank engine and get it warm. Touch top radiator hose to see if its warm. If not then the thermostat has not opened yet. That could also be the problem. After it gets warm open the bleeder valve if equipped and bleed all the air out. Once the steam and hot air from the valve starts to be gone and pure coolant coming from the valve. You have successfully bleed the coolant system. Cool engine back off and check coolant level once more. Hope this helps.

Nov 27, 2012 | Cars & Trucks

1 Answer

Where can is the cooling system bleeder valve located?


Automotive cooling system has no bleeder valve. Removing trapped air (bleeding) from the system is done by loosening the upper radiator hose with the engine running, and letting some coolant to ooze out. If the coolant coming out already has no bubbles with it, then you already expelled out the trapped air. Simply running the system with out the radiator cap will also do the trick.

Oct 23, 2012 | 2005 Nissan Sentra

1 Answer

2001 nissan frontier brake pedal goes almost to the floor , have bled brakes 3 times ;


Do you have any leaks? Make sure that all bleeder screws are fully tightened after bleeding. When you bleed the brakes make sure that you do not let up the pedal while tightening / loosening the bleeder - otherwise air will return to the lines. If the problem continues you may need to have the ABS system bled with a computer attached - sometimes air can get trapped in the valve block and can only be released with a computer opening the valves and a pressure bleeder attacher to the reservoir.

Mar 15, 2011 | 2001 Nissan Frontier Crew Cab

1 Answer

I hve a 96 chevy 1500 4wd with brake issues. ABS light is on in the dash. Have replaced both frt calipers, pads, hoses. Replaced rear brakes and drums. Replaced master cylinder. Bled two quarts of...


you may have air trapped in the ABS EHCU. Did you use this procedure?

Bleeding the EHCU

Bleeding the EHCU requires the use of the TECH-1 scanner or its equivalent and the appropriate cartridge. Additionally, 3 tools, J-39177 or equivalent, are required. Bleeding cannot be performed without this equipment.
The EHCU must be bled after replacement or if air is trapped within the unit. It must be bled after bleeding the master cylinder and before bleeding the individual wheel circuits.
The Internal Bleed Valves on either side of the unit must be opened 1 / 4 - 1 / 2 turn before bleeding begins. These valves open internal passages within the unit. Actual bleeding is performed at the two bleeders on the front of the EHCU module. The bleeders must not be opened when the system is not pressurized. The ignition switch must be OFF or false trouble codes may be set.
  1. Open the internal bleed valve 1 / 4 - 1 / 2 turn each.
  2. Install one tool J-39177 on the left bleed stem of the EHCU. Install one tool on the right bleed stem and install the third tool on the combination valve.
  3. Inspect the fluid level in the master cylinder, filling if needed.
  4. Slowly depress the brake pedal and hold it down.
  5. Open the left bleeder on the front of the unit. Allow fluid to flow until no air is seen or until the brake pedal bottoms.
  6. Close the left bleeder, then slowly release the pedal. Wait 15 seconds.
  7. Repeat Steps 4, 5 and 6, including the 15 second wait, until no air is seen in the fluid.
  8. Tighten the left internal bleed valve to 5 ft. lbs. (7 Nm).
  9. Repeat Steps 3-7 at the right bleeder on the front of the unit.
  10. When bleeding of the right port is complete, tighten the right internal bleed valve to 5 ft. lbs. (7 Nm).
  11. Remove the 3 special tools.
  12. Check the master cylinder fluid level, refilling as necessary.
  13. Bleed the individual brake circuits at each wheel.
  14. Switch the ignition ON . Use the hand scanner to perform 3 function tests on the system.
  15. Carefully test drive the vehicle at moderate speeds; check for proper pedal feel and brake operation. If any problem is noted in feel or function, repeat the entire bleeding procedure.

Oct 10, 2010 | Chevrolet 1500 Cars & Trucks

1 Answer

Replaced radiator in 2001 chevy venture now no heat?


the most commen problem with no heat is an air lock in the cooling system
when the vehicle is cold remove the rad cap
then there is a air bleed screw on the coolant pipe that goes across the front valve cover open the bleed screw about 3/4 to a full turn
use a funnel and over fill the rad into the funnel (this will make a mess)
make sure you have a steady streem of coolant coming out of the bleeder when you have a steady streem close the bleeder then there is a bleeder screw on the thermostat hosing open it and when you have a steady streem from it close that one then put the rad cap back on
and start the vehicle put your heat controls on VENT ,HOT AND HIGH BLOWER SPEED
run the vehicle and make sure you have HOT AIR COMMING OUT OF THE VENTS NOT WARM if its just warm then shut the engine off and open the bleeder on the pipe not the T-STAT HOUSING
keep repeating till you get HOT AIR COMMING FROM THE VENTS
top up the over flow bottle the rad will be fine
hope this helps

Mar 23, 2010 | 2001 Chevrolet Venture

1 Answer

Cooling system is air bound, how can I bleed it out?


Look for bleeder valves somewhere on the top of the cooling system. If you see any use them to remove trapped air. Start the engine and slowly turn the screw to remove trapped air. If there are no bleeder screws then remove the radiator cap from a cool engine. Make sure the radiator is full. Start the engine and watch for escaping air bubbles. Keep the radiator full at all times. When the engine reaches close to full operating temperature and you see no more air bubbles escaping put the cap back on. You may have to do this one more time if you experience any more trapped air in the system. Just make sure to look closely for bleeder valves. They will look like tire valves with a cap.

Jan 10, 2010 | Chevrolet Silverado 2500 Cars & Trucks

Not finding what you are looking for?
2004 Pontiac Grand Am Logo

99 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8152 Answers

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

Answer questions

Manuals & User Guides

Loading...