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After shutting vehicle off, air comes out of ducts in bursts about 15 seconds apart Its a 2004 Envoy and the cooling system is fine, no leaks,and the AC works

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  • yadayada
    yadayada Apr 23, 2017

    No make, no model, no year, Please advise.



6 Suggested Answers

  • 2 Answers

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

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Good luck!

Posted on Jan 02, 2017


SOURCE: 2004 Envoy AC works but does not come out the front vents. Only @ windshield

You most likely have a bad mode actuator.

Posted on Sep 26, 2008

  • 3600 Answers

SOURCE: AC blows cool air on passenger side but warm on driver's

Yes there is both a door and a flapper you have a problem with a blend door motor, it is not switching to cold it is half open and half closed so you need to replace the motor vacuum motor it is under the dash near the heater on the passenger side and if it is the other motor under dash you will have to take part of the dash apart to get to it, to test buy a piece of vacuum hose 1/8 inch diameter about 3 feet long and you can hook it to each of the vacuum motors and **** on the end of the line to see which one is causing you the problem, also could be the control head for the AC inside the car where the controls are, you have to remove the ac cluster ot get to the vacuum switch it's all vacuum operated and if you pull it out you will be able to here an audible sound of air leaking if it's the switch.

Posted on Jun 17, 2009

  • 6927 Answers

SOURCE: I have 2003 gmc envoy my front ac control does not

Need to check to see if the blower motor is running.If it is,but not threw the vents,most likely a vent door actuator motor.The actuator motor in this case would be bad,it is hard to get to,unless you are mechanically inclined,You can do it your self.If the blower motor is bad,just replace it.Check fuses first,and the blower relay.If I can help,let me know.

Posted on Aug 29, 2009

  • 59 Answers

SOURCE: Passenger ac vent cools and driver side ac vent do not

It sounds like a heater blend door issue inside the heater box that is actually not closing all the way to allow either cool or hot air or visa/versa.

Posted on Sep 07, 2009

  • 2 Answers

SOURCE: duo therm ac problem

Same problem. I have a 2005 on a Rockwood Roo. Worked fine in October 2009. Not working June 2010. Problem is not a freon leak, compressor went bad. I banged the compressor gently with rubber mallet then with a hammer but that did not work. The fan runs, the compressor runs but gets hot. Also no indication of freon moving through system as everything gets warm from the compressor outward.

Posted on Jul 25, 2010

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Why will my Dometic air conditioner only cool to 15 degrees below ambient temperature?

A few things can determine that , or cause it. First of all, where are you checking the ambient air temperature and what type of system do you have, is it ducted, blows out of ceiling assy? Has unit been properly cleaned lately? If ducted, have you checked for cool air leaking by to return air box?

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Flush clogged heater core

The coolant is green because there is anti freeze and rust inhibitor that colours the water. If there was a blockage the engine would overheat. I suspect the thermostat has jammed open.

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I have a 2004 GMC Envoy really can't find where the Blower motor Resistor is located? I have checked the motor it works fine the

In my experience, the resistor is located somewhere in the air flow. The reason for this is so the air can cool the device. I am not familiar with the duct work of this particular vehicle, so more that that I cannot say.

Thanks for your visit today.

Jan 06, 2011 | 2003 GMC Envoy

1 Answer

I have a 2003 envoy where the rear end is riding realy low any ideas

I had the same problem with my '02 Envoy 4x4; had the soap test done and there were no leaks; also had the air compressor motor checked and mechanics said it was fine. The rear air bags were worn and cracked so I had them replaced. It lifted and rode at the correct ride height for a few weeks.
After having the rear air bags replaced I noticed that it was starting to not lift as before. Had another diagnostic check; the air compressor was not forcing air through the system in order to lift the vehicle. The air compressor motor was replaced. Compressor comes on and shuts off now.
Vehicle is at the normal ride height now.
Rear air bags and air compressor motor were dealership parts; unable to find after market; not recommended to replace with used parts.
I had the dealership to run the diagnostics and had another mechanic to replace the parts. Total repair for bags, motor + labor = $1500

Nov 14, 2010 | 2002 GMC Envoy

2 Answers

Laptop toshiba l300 series always shutdown pls. help me

A large percentage of the time, this issue is directly related to the laptop is overheating.

Specifically the Processor. When the Processor becomes too hot, (Goes past it's Thermal Limit), it turns off.
This is a Fail Safe feature that is built-in, to keep the Processor from burning up.

The reason the Processor is overheating;

1) The inside of the laptop is dirty.
The hardware components inside a laptop are cooled by air.
There is a small Cooling Fan which draws air into the Air Intake Duct.

Foreign material such as Dirt, Dust, Hair, Food Crumbs, Lint, and other objects collect on the Cooling Fan, and in the Air Intake Duct.

The Air Intake Duct leads to a Cooling Tube, which in turn leads to a Heatsink.

A typical Heatsink is composed of a flat metal plate, which has tall fins protruding from it.
Heat is absorbed by the flat plate, and into the tall fins. The fins absorb the heat, and radiate it out.

Air drawn in by the fan, flows through the spaces in-between the fins, and carries the heat away.

The Heatsink is attached to the Processor, and may also be attached to the GPU.
(Graphics Processing Unit)

Once the Air Intake Duct, Cooling Fan, Cooling Tube, and Heatsink are clogged with the 'Gunk' mentioned above, the cooling capacity of the cooling system drops tremendously.

Solution is to remove the AC adapter (Charger), and the Battery.
A can of compressed air for computers is used, and the Air Intake Duct, and Cooling Fan are cleaned out with the air.

(Be SURE it is the intake side, and not the exhaust side. If you blow air in the exhaust side, you will be pushing the gunk back in, not removing it.

Your Air Intake Duct is on the bottom of the laptop, in the circular grille shape)

Attach the plastic straw to the can of air's nozzle.

Hold the laptop up on it's Left side, and the back facing you, on a towel placed on a table, with one hand.

Use the other hand for the can of air, and bring the plastic straw about a finger length away, from the Air Intake grille opening.

Use Short Bursts of air, as you are real close to the Cooling Fan. If you use a long burst of air, you may spin the fan faster than it was designed for, and cause damage to the fan's bearings.

A Short Burst of air is squeezing the trigger in all the way, then letting go.

Start at one side of that round opening, and go across to the other side. Come down in rows as you proceed.

After you are satisfied that the Air Intake Duct, and Cooling Fan is clean, lay the laptop down in it's normal position.

Prop the Left side up with a book on it's side, for about 10 minutes.
This will allow any moisture that may have been caused by the can of compressed air, to dissipate.

Now remove the book, reinstall the Battery, and plug in the AC adapter.

This link shows you - Disassembly of a Toshiba Satellite L355, or L355D laptop.
It is not an invitation to disassembling your laptop, I just want to show you the hardware components, I've been referring to above.

(It's part of the Toshiba Satellite L300 series of laptops)

Step 1 shows you the Air Intake Duct grille, and the Cooling fan under the grille. The round opening on the upper right side.
You can left-click on the photo to enlarge it.

The page numbers are on the bottom of the page.
Page1::Page2::Page 3::Find another model

Click on Page 2
Step 9 shows the Keyboard removed, and the top of the Cooling Fan.

If the above solution doesn't cure your problem, the laptop may have to opened up to this state, and the fan blades, and surrounding shroud, cleaned out.

You may feel this is beyond your ability. In any case, I am showing you what the computer repair tech will be doing.

The repair tech will be using a small soft bristle brush to dislodge the heavy gunk, then a can of air is used.

Q-tips can be used in a pinch to substitute for the brush, then short bursts with a can of air are used.

Page 3, Steps 16, 19 and 20 give you a bottom view of the Cooling Fan, and the shroud that surrounds the fan.
Step 20 shows you the Cooling Fan, the Cooling Tube, and the Heatsink.

The curved copper colored tube is the Cooling Tube.
There are two Heatsinks used.

One is at the left side, that has two screws circled in Red. Has a V shaped piece of metal on top, and an upside down V shaped piece of metal on bottom.
This Heatsink is for the GPU.

To the right of this Heatsink is another Heatsink with two screws circled in Red.
This is the Processor heatsink.
The Processor is underneath this Heatsink.

2) The laptop's Air Intake Duct opening is blocked.
The Air Intake Duct opening is on the bottom of the laptop.

Laying the laptop on your lap can block this opening.
The cooling capacity of the cooling system drops, the Processor overheats, and turns off.

Laying the laptop on a bed, couch, or directly on a carpet floor, can have the same effect.

3) The cooling system for a laptop is very inefficient.

All of the hardware components of a laptop are crammed into a small box, and a small fan is used to keep them cool.

To help the cooling system you can use a laptop cooler pad.
The cooler pad has fans built in it's base. Most are powered by plugging into a USB port on the laptop.

Below are a few examples. (Not an advertisement for the manufacturers, or the website)

Mar 05, 2010 | Computers & Internet

2 Answers

Fridgefreezer top fridge section has stopped

see if the back panel inside the refr comes off if it does and u have a fan back there make sure it is working if not make sure its gettin power to it and if it is and not running then replace it and see if this corrects the problem if this fails see if u have a duct going from the freezer to the refr if u do take it apart and see if somethings blocking the airflow or if it has a door thats stuck shut and not letting air go thru

Mar 01, 2010 | Refrigerators

1 Answer

My dell inspiron notebook 6400 shuts down and starts up automatically...what is going on...I don't use a battery so its not that...just use the ac

By your description it sounds like your laptop is overheating. Many a laptop faces this issues because the Air Intake Duct is dirty, and the internal hardware.

When a processor in a computer becomes too hot, it shuts off. (More specifically BIOS turns it off) NO processor running, NO computer.

Since the opening for the Air Intake Duct, (Left front side), is on the side close to the bottom, it makes an excellent(?) location to 'inhale' foreign debris. Dust/Dirt/Hair/Food Crumbs/Lint, you name it.
When this foreign debris goes inside the Air Intake Duct it clogs it up, dramatically reducing the cooling efficiency of the cooling system.

The Air Intake Duct is connected directly to the System Fan, and this fan blows air through the Cooling Tube for the processor, and graphics.
The Cooling Tubes, One for the Processor, One for the Graphics), is about the width, and height of your little finger!

Use a can of compressed air for computers, and blow out the Air Intake Duct. (AC adapter removed,{Charger}, and battery removed)
Do NOT blow out the Exhaust Duct!

Use Short Bursts of air, not Long bursts.
You will be blowing air directly on the System Fan. This fan is only designed to spin so fast. Spinning it faster than it was designed for, can lead to premature failure of the fan's bearings.

Take a look at this,
See Number 12? That is the Processor Thermal Cooling Assembly. The copper colored S-shaped piece is the Cooling Tube.
Number 14 is the System Fan.

This is the Service Manual main page,

Would appreciate it if you would rate my answer.

Jul 19, 2009 | Dell Inspiron 6400 Notebook

1 Answer

Air/ air conditioning does not blow air out of dash

If you are mechanically can fix it..the A/C and heater air is directed to different places by the doors in the duct work..and these door are actuated by vacuum..and you might have a hole in a vac line or the vac line came off of a diaphram or a diaphram has went bad..the duct wor could have come apart or the heat/A/C module has went bad..but most of the dash will have to be taken apart to get to the duct work..i hope this will help..if not..write me back

Jun 29, 2009 | 2004 GMC Envoy

1 Answer

Blower motor wont shut off

Check your blower resister in duct right in from of motor. These tend to burn out and short every once in a while

Dec 31, 2008 | 2004 GMC Envoy

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