Question about 1996 Honda Civic

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Lack of air flow ( from defroster outlets only)

All other air outlets are working.how to repair problem

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Could be

flapper door in airbox to divert air to defrost brokener, cable to same broken, lever on dash broken or cable unhooked.

You will be upside down with your head in the footwell before you figure out how to get to the thing.   Hopefully you WON"T have to take the dash out.

good luck,

Posted on Oct 29, 2008

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2 Answers

My ac air is


Without doing so testing it would be hard to say , would just be guessing . Where did you have it checked ? If it does change every once and a while , I would think it could be a sticking actuator or in the heater and A/C programmer module . The heater and A/C programmer will direct the blended air in one of several air delivery modes. The side window outlets receive the airflow during all of the modes of the operation. The heater and A/C programmer directs air to the other outlets by energizing specific vacuum valves. This feeds the appropriate combination of mode valve actuators.
1
  1. Turn the engine ON.
  2. Select HI BLOWER.
  3. Connect the Scan Tool .
  4. Use the Scan Tool in order to command recirculation door movement.
Does the recirculation door operate?
--
Go to Step 2
Go to Step 3

2
Using the
Scan Tool , select AIR DOWN.
Is most of the air flowing from the heater (floor) vents, with only a small bleed out of either the defrost vents or the A/C vents?
--
Go to Step 7
Go to Step 4

3

  1. Remove the programmer vacuum hose connector.
  2. Measure the vacuum on the orange hose.
Is the vacuum less than the specified value?
10 in Hg
Go to Step 14
Go to Step 13

4

Attach a hand held vacuum pump to the YEL CKT.
Does the vacuum pump hold vacuum?
--
Go to Step 5
Go to Step 6

5

  1. Inspect for a stuck up/down valve or actuator.
  2. Inspect for the proper hose routing. If the routing is OK, replace the heater and A/C programmer. Refer to .
Is the repair complete?
--
Go to Step 16
--

6

Repair the leaking hose or the actuator.
Is the repair complete?
--
Go to Step 16
--

7
Using the
Scan Tool , select A/C DEFROST.
Is most of the air flowing from the the A/C vents or the defrost vents, with only a small bleed from the heater vents?
--
YES Go to Step 8
NO Go to Step 9

8

Is most of the air out of the defroster vents?
--
YES Go to Step 10
NO Go to Step 11

9

Attach the hand held vacuum pump to the RED CKT.
Does the pump hold vacuum?
--
YES Go to Step 5
NO Go to Step 6

10
Using the
Scan Tool , select AIR UP.
Is most of the air flowing from the A/C vents with only a small bleed out of the defroster vents?
--
System OK
Go to Step 12

11

  1. Inspect for a stuck A/C-defrost valve (door) or actuator.
  2. Inspect for proper hose routing. If the hose routing is OK, replace the heater and A/C programmer. Refer to .
Is the repair complete?
--
Go to Step 16
--

12
  1. Repair the leaking hose or actuator.
  2. Inspect for a stuck A/C-defrost valve (door) or actuator.
  3. Inspect for proper hose routing.
Is the repair complete?
--
Go to Step 16
--

13

Attach the hand held vacuum pump to the ORN CKT.
Does the pump hold vacuum?
--
Go to Step 15
Go to Step 6

14

Repair the vacuum source.
Is the repair complete?
--
Go to Step 16
--

15

  1. Inspect for a stuck inlet valve (door) or actuator.
  2. Inspect for proper hose routing. If OK, replace the heater and A/C programmer. Refer to .
Is the repair complete?
--
Go to Step 16
--

16

  1. Clear the DTCs.
  2. Verify that the system is operating properly.
Did you clear the DTCs and verify the operation?
--
System OK

Good luck hope this helps ! Do you need directions on how to get the heater / A/C controller out .

Jun 17, 2016 | 1999 Cadillac DeVille

1 Answer

1991 dodge dakota heater vacuum air flow shutters son't move


Taking your heating box apart may be a really big job.
It would be good to check the vacuum supply at the heater box, and/or at the controls.
Lack of sufficient vacuum can cause the heater to not work.
The low vacuum could be due to a vacuum leak somewhere before it gets to the controls or the heater box.
Then, the heater box or flaps could be stuck or warped, causing malfunction.
It is all repairable, but can cost you a lot of time and effort fixing this.
God bless your efforts.

Dec 22, 2015 | 1991 Dodge Dakota

1 Answer

Front defroster not working


Hi. The 2 most common causes of this is 1) lack of air flow due to the pollen filter being blocked; 2) the aircon has no gas, and is not drying the air properly.

Dec 30, 2013 | 1998 Volkswagen Beetle

1 Answer

Air flow at middle instrument panel outlets not working.


sound like you are in defrost mode if air going to the window.you vent mode for air flow through instrument panel or bi level some air flow through instrument panel and some airflow direct to floor.your vechicle has climate control. dealership has to check out programmer to climate control in which dealership has to recalibrate check the programmer.

May 23, 2013 | 1998 Buick LeSabre

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

1 Answer

I cannot get any air, hot or cold, fresh or a/c, to come thru the vents in the dash. Floor vents and defrost are the only source of air flow. What now ???


Sounds like the lil motor on the bottom side vent is bad or else garbabe fell down defrost outlet and has the motor blocked from working..Take something like an screwdriver and work some of the junk out the bottom vent..Hope this helps...

Jul 23, 2010 | 1997 GMC Sierra

1 Answer

The a/c is working but the air comes out only to the windshield and feet , where can I find a climate control panel to replace the old one?


it may not be the panel - but a vacuum leak to the panel - hear any hissing noise ?? generally vacuum from the engine is used to open & shut the doors within the heater / ac box - lack of vacuum automatically diverts air flow to the defroster ...

Oct 27, 2009 | 1989 GMC S-15 Jimmy

1 Answer

The doors on the ac keeps opening an closing air cond will not work rite


do u mean the air flow switches to diff outlets like the defrost, not sure of what you mean?

Aug 07, 2009 | 1998 GMC Jimmy

1 Answer

A/c flow


A: Cable has come off door on defroster.

B: Fuse is blown on that part of wiring. May or may not be listed under A/C; could also be under heater.

C: I believe 96 models still had some inline fuses in the wires. Wouldn't hurt to check.

May 24, 2009 | 1996 GMC Jimmy

1 Answer

Front window defroster and floor, no air flow.


I had the same issue and then I got into a slight accident with a curb. When the collision place was fixing the car, I told them about the defroster and floor and they told me that they had to clean out a whole bunch of leaves and then airflow was restored. Have it cleaned, you may be surprised.

Feb 15, 2009 | 2004 Chrysler Pacifica

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