Question about 1996 Jeep Grand Cherokee

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A/c dashboard will not change levels such as from bi-level to defrost level to floor level ect.....

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Sounds like a bad blower motor resistor or vacuum leak.

Posted on Jul 12, 2010

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My ac on my 1998 oldsmobile 88 won't blow out the be-level what could it be


I believe you mean "BI-LEVEL" mode, which means it should blow air simultaneously out of the dashboard registers and the lower register. The Temperature of the air blowing out of both of them is regulated by the temperature preset.
Does the fan still blow when you move the switch to BI-LEVEL? If it does but the air comes out of the DEFROST registers, that means your diverter is not functioning correctly, most likely due to a vacuum leak under the dash. If the fan shuts off in BI-LEVEL mode but still operates in HEAT mode, your selector module is bad. If the fan shuts off in BI-LEVEL mode and in HEAT mode, either your engine coolant is not hot enough to provide heat (automatic function), or the temperature sensor for your climate control system has failed.

Jul 19, 2014 | Cars & Trucks

1 Answer

Air only blows out the bi-level, won't switch to defrost or floor


The air diverter door in the heater/AC case is not moving. The cause could be anything from a stuck door to a bad vacuum line, bad servo (door actuator), or the rotary switch on the control panel.

Apr 21, 2013 | 2006 Dodge Grand Caravan

1 Answer

Heat blows cold air


The LH models (LHS, Concorde, New Yorker, Intrepid, Vision) do have self-diagnostic capability with the standard type heater controls. I don't know about the Sebring heater controls (my '95 manual doesn't mention it) but if you have the various controlknobs/buttons that I will describe you could give it a try.
There is a rear window defogger that is initiated by a push button with an LED light. That light is the readout, by its blinking. To begin the diagnostic mode, run the vehicle at idle with the controls set as follows: the blower speed knob should be on any position other than OFF, the temperature knob should be set in full COOL, and the mode knob should be set on Defrost mode.
To enter the diagnostic mode, press the defogger switch in for five seconds, until it begins to blink, then release it. It will continue to blink for about 30 seconds while it calibrates. If it goes out, the calibration is OK and you can skip 3 paragraphs to "Position...mix mode" below.
If the light stayed on, switch the mode knob to the MIX (defroster-floor) position. If the light stays on there is a problem with the control head unit.
Switch the mode knob to the FLOOR position, if the light stays on, it indicates a problem in the blend door or the blend door actuator wiring.
Move the knob to the Bi-level (panel-floor) position where a continuous light indicates a problem with mode actuator or circuit.
Position the knob in the MIX mode. The LED light should now flash twice then pause, and continue a two-flash sequence, indicating that the MIX mode is OK.
In the FLOOR mode the light should flash three times, meaning that the FLOOR mode is OK.
In the Bi-Level Mode, a four-flash sequence indicates that mode is OK.
In the PANEL mode the light should flash 5 times to indicate no problems there, and in the recirc-panel mode 6 times and seven times in the recirc Bi-level mode.
The temperature control can be checked by switching the mode knob to Defrost and rotating the temperture knob. If the temperature contol is OK, the light will flash faster the more you turn the temperature knob up, until the light goes out at the hottest setting.
Switch the knob between Panel and Recirc-Panel and watch the recirc door (unit under the dash). Proper operation means that circuit and components are OK.
To get out of the self-diagnostic mode, turn off the blower or push the air conditioning button once.
If this doesn't seem to apply to your control head or you get no response from an LED light for the rear defroster, then the Sebring may not have this capability. Please let me know your results if any

Dec 02, 2010 | 2001 Chrysler Sebring

2 Answers

When I turn my air conditioner on, the air blows out on the dashboard for the windshield and not from the vents. What can I do??


The blend door actuated by solenoids may not be working correctly causing a/c cool air to come out of the windshield vents, rather than the regular front vents.

Defroster Valve Actuator 1996 – 1999 1996 – 1999 HVAC Actuators gm-10-00-1840.gif

To Remove:
  1. Remove the air distributor assembly.
  2. Unclip the defroster valve actuator from the air inlet.
  3. Disconnect the defroster valve actuator from the valve.
To Install:
  1. Disconnect the defroster valve actuator from the valve.
  2. Clip the defroster valve actuator from the air inlet.
  3. Install the air distributor assembly.
Heater/Bi-Level Actuator 1996 – 1999 1996 – 1999 HVAC Actuators gm-10-00-1840.gif

To Remove:
  1. Remove the air distributor assembly.
  2. Remove the clip and the screws that fasten the 2 halves of the air distributor assembly and separate the air distributor assembly.
  3. Unclip and disconnect the heater/bi-level actuator from the valve.
To Install:
  1. Connect and clip the heater/bi-level actuator to the valve.
  2. Fasten the 2 halves of the air distributor assembly together and torque the fasteners to 13 in-lbs (1.5 Nm).
  3. Install the air distributor assembly.
---
Removal & Installation Recirculation Actuator 1996 – 1999 1996 – 1999 HVAC Actuators gm-10-00-1840.gif

To Remove:
  1. Remove the left sound insulator panel.
  2. Disconnect the vacuum hose from the recirculation actuator.
  3. Remove the recirculation actuator from the valve.
To Install:
  1. Connect the recirculation actuator to the valve.
  2. Clip the recirculation actuator to the air inlet.
  3. Connect the vacuum hose to the recirculation actuator.
  4. Install the left sound insulator panel.

Aug 13, 2010 | 1997 Buick LeSabre

1 Answer

The radiator fan turns on as soon as I turn on the car even before starting.


is the defroster or bi-level on? a fan will run while the a/c is on, which is the case when defrost or bi-level is selected. manufacturers incorporated this feature to run the a/c in winter to keep seals from drying out

Mar 23, 2010 | Toyota Corolla Cars & Trucks

1 Answer

1988 1500 series half ton. Air vents to mid dash and defroster won't open up. Heat and air blows on the floor only.


It sounds like the door on the defroster isn't opening. Check for a vacuum leak and also check the temp.control valve this should have several vacuum hoses coming from it. This valve controls all the doors, Bi-level, Defroster, and Floor positions.

Oct 05, 2009 | 1988 Chevrolet K1500

1 Answer

Heat selector switch?


The switch might be bad, but if it's vacuum operated, there is a vacuum operated diaphram
under the dashboard that operates a door to close
the air from defrost to direct it to floor or mix.It's possible there might might be an air leak.

Jan 21, 2009 | 1994 Ford Mustang

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