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Need to find manual or info on why when on heat the air is cool on the other side getting to flows when I need only HEATER

Posted by Anonymous on


5 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

Hi there,
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2005 Pathfinder Heat Flow problem

I am having/had the same problem. My rear heater has not worked the last 2 winters, still trying to figure that one out. But I think I solved the front heat problem myself. The heater was blowing cold air while idling and hot air when the car was moving.

I jacked up the front of the vehicle, took the cap off of the reserve tank for the radiator, turned the car on and ran the heat (AC off) for 15 minutes. This is supposed to release any air bubbles in the coolant system and I did see air bubbles emerge as I was watching (this might be normal occurance, I'm far from a mechanical expert). Anyway, this did not immediately solve the problem, still blowing cold air as it sat there idling after 15 minutes. Dejected, I put the cap back on, lowered the vehicle and resigned myself to taking it to a dealer.

But a funny thing happened the next day, the coolant level was a lower (no leaks on the floor) so I filled up, and sure enough, when I started the car and let it warm up a little, hot air started coming out of the heater!!!

As far as my wife knows, I fixed the problem for the price of a bottle of coolant, so I am a hero...but at first I thought it didn't work. Here we are a month later and still blowing warm air and haven't had to replace any more coolant...the internet is a wonderful thing!

Hope this works for you, and I hope I can figure out my rear heater problem as well.

Posted on Jan 30, 2009

  • 335 Answers

SOURCE: air conditioner works fine on both sides but

Hello and welcome. this is caused by a bad temp door actuator for the drivers side temp door. it is stuck on cold. the temp door actuator will need to be replaced to repair this concern. here is a picture. it is mounted to the drivers side of heater a/c case, behinde the dash.


Posted on Sep 21, 2010

  • 6826 Answers

SOURCE: Bought my jag late Spring,

The blend door(s) is (or are) not functioning correctly.

Here are instructions on how to remove and replace the various blend door actuators:

Re-Circulation Blend Door Actuator

  1. Remove the glove compartment.
  2. Remove the recirculation blend door actuator retaining bolts.
  3. Disconnect the recirculation blend door actuator electrical connector.
  4. Remove the recirculation blend door actuator and disconnect the control rod.
  5. To install, reverse removal procedure.

Instrument Panel Blend Door Actuator

  1. Disconnect the negative battery cable.
  2. Remove the glove compartment.
  3. Disconnect the electrical connector.
  4. Disconnect the instrument panel blend door actuator remote linkage.
  5. Remove the instrument panel blend door actuator retaining bolts.
  6. Remove the instrument panel blend door actuator.
  7. To install, reverse removal procedure.

Defrost Vent/Register Blend Door Actuator

  1. Disconnect the negative battery cable.
  2. Remove the instrument panel.
  3. Disconnect the electrical connector. Remove the defrost vent/register blend door actuator.
  4. To install, reverse removal procedure.

Footwell Vent/Duct Blend Door Actuator

  1. Disconnect the negative battery cable.
  2. Reposition the in-vehicle temperature sensor venturi pipe.
  3. Disconnect the electrical connector.
  4. Remove the retaining bolts.
  5. Remove the footwell vent/duct blend door actuator.
  6. To install, reverse removal procedure.

Cold Air Bypass Blend Door Actuator

  1. Disconnect the negative battery cable.
  2. Remove the driver side instrument panel lower trim panel.
  3. Disconnect the cold air bypass blend door actuator electrical connector.
  4. Remove the cold air bypass blend door actuator retaining bolts.
  5. Remove cold air bypass blend door actuator.
  6. To install, reverse removal procedure.

Posted on Oct 23, 2010

  • 147 Answers

SOURCE: 2008 Chevy Uplander has 21,000 miles. Nno heat

Uplanders with the 3.9 engine are prone to no heat at idle speeds. Probably weeping head gasket. Air bubble trapped. Dealers will remove rad cap and let it sit at about 25 deg. angle for a couple hours. Good for awhile.

Posted on Nov 23, 2010

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1 Answer

Which actuator controls what? There are 4 actuators (that I've found) in my 2002 Envoy. Question is, which one controls what? There are three on the drivers side and one on the passengers side?

There's this website
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Mar 17, 2018 | 2002 GMC Envoy

1 Answer

I have a 2002 lincoln town car it blow cool air on right but nothing on left side

There are vacuum controlled actuators behind the dash that direct air flow to the correct vents . Floor , defrost , center etc... The dash in most cases needs to be pulled to fix these type problems ! You should go an buy a repair manual at the parts store or you can get a on line service manual from alldata for the diy'er $ 20 .00 for a year ! This will give you step by step instuctions OE Info for Student and DIY er

Aug 11, 2016 | 2002 Lincoln Town Car

1 Answer

Why is it blowing warm on and off on the driver side and blowing cool on the passenger side?

Here's is a little background and a couple of thoughts. Turning to the background, first. The heater/air conditioner system in your 02 uses the same set of ducts located in the instrument panel. In turn, those ducts are linked to what can be considered miniature version of the cooling system in the engine compartment (yes, this is a greatly simplified version). The whole system, in fact, is run off the main heater/ac system, however, it has a separate series of controls so that it can function properly.

When you dial a temperature, a signal is sent to the heater/cooling system telling the system to open a series of baffles, directing a flow of heated or cooled anti-freeze/coolant to the proper "radiator" behind the face of the instrument panel. In turn, the fan system activates a series of doors behind the instrument panel so that the flow of air is directed through the "radiator" and into the passenger compartment. This is essentially the heater/cooling system work.

Now, you say that the driver's side is hot, while the passenger side is cool. What has happened is that the flow of heated coolant that is supposed to heat the passenger side of the duct system is blocked. Since there is no heat to warm the air that is flowing past the fins of the "radiator," the flowing air remains cool to cold, depending on the weather and ambient temperature. The result is that one side of the car remains cool. And, since the other side of the "radiator" is normal and the air is heated, it is warmed.

That is the most likely explanation for this.

Another possibility is that the baffles themselves are stuck and the coolant that is supposed to be directed to the passenger side is not being directed their.

Either way, your technician has some work ahead.

Jun 05, 2015 | 2002 GMC Envoy XL

2 Answers

Cool air wont work But heat works

Take to Midas,they also do a.c. work,they do mine and give a warranty and good price.

Dec 17, 2013 | 2004 Cadillac Deville

1 Answer

No air is coming out of vents.

is the blower blowing (sounds) on HIGH , and all modes blow no air.
if blower is dead (silent ) it can blow, is it blowing, both in sound and air ?
where are the controls? have you tried all controls.
every test.
here (works for all cars)

we have the fsm. on this car.
its here. (but you have to know above , to use below (basics)

my guess is you need heat, NOT IN KEYWEST?
it only takes 2 thing to get HEAT (HVAC)
1: engine coolant at 180F flowing through the core
2: and air flowing through the same cab core.

just 2 rules.

Aug 13, 2013 | 1991 Honda Accord

1 Answer

Heat does not come out passenger side of the car but comes out drivers side

There is a blend door problem.

prev.gif next.gif HEATING AND AIR CONDITIONING Refer to Section 1 for discharging and charging of the air conditioning system. The heating system provides heating, ventilation and defrosting for the windshield and side windows. The heater core is a heat exchanger supplied with coolant from the engine cooling system. Temperature is controlled by the temperature valve which moves an air door that directs air flow through the heater core for more heat or bypasses the heater core for less heat. Vacuum actuators control the mode doors which direct air flow to the outlet ducts. The mode selector on the control panel directs engine vacuum to the actuators. The position of the mode doors determines whether air flows from the floor, panel, defrost or panel and defrost ducts (bi-level mode).

Oct 28, 2010 | 1998 Oldsmobile Regency

4 Answers

Car overheating no heat coming from vents just cold air

NO heat because there is no coolant flowing throught the heaster core. Car is overheat since there is no coolant circulating in engine water jacket.
Check the coolant, if it is low, then check the oil level. If oil level is high then the head gasket is blown so coolant gets into the engine therefore there is not enough coolant to cool the engine.
If the oil level is OK and coolant level is OK then Need to check 3 following things:
-Bad thermostat is not open causing coolant stagnant then engine overhet.
-Bad water pump is not pumping coolant so there is no coolant circulating to disipate the heat.
-Bad radiator blocks the coolant flow from top to bottom radiator.
Good luck.

Dec 15, 2009 | 1998 Oldsmobile Aurora

1 Answer

2005 Chevy Impala driver's side heat blows cold, but works on passenger side. Was told a vent is probably not opening to allow for the heat to get to the driver's side? Where can I locate this vent? a drivers side air flow actuator at a auto parts place for dual zone heating/cooling.
(NAPA etc will have it.....or the dealer)
Open the glove compartment.....all the may have to take the screws out at the bottom......look in at the heater assembly....look over to the will see the two air flow actuators.
Look at the part you have and match it to the part on the heater assembly.
The actuator that is closest to the engine is the drivers side control.
Replace it.
Try your controls and check for heat and cooling on both sides.
The stepper motor in these actuators goes bad on quite a few...but over look have a great car,good for many miles of trouble free driving.

Nov 03, 2009 | 2005 Chevrolet Impala

1 Answer

No air flow through 4 top rear vents

Don't worry, it's designed that way. The owner's manual is pretty unclear about this. But the heated air only comes out the floor vents underneath the front seats and the "heat vents" at the forward and side of the rear A/C compartment near the floor. The cooled or vent air flows from the overhead vents.

Nov 28, 2008 | 2004 Honda Odyssey

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