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06 pt ac not working

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Old 16 Feb 2014, 03:33 am
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Join Date: Apr 2012
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Default 06 pt ac not working

I have an 06 cruiser. The ac quit in it. Also, about the same time, the floor heat stopped working. If I set it to the floor, it only goes to defrost. I tested the LPS already. The ac lines do get cold and frosty. However, no cool air comes out. I tried changed the control panel with the cables hooked to it. It did not make a difference. Can anyone tell me what might be the problem here?
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Old 16 Feb 2014, 11:30 am
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Join Date: Jun 2013
Location: Corpus Christi,Tx.
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Post Re: 06 pt ac not working

Originally Posted by snddoc1 View Post
I tried changed the control panel with the cables hooked to it. It did not make a difference. Can anyone tell me what might be the problem here?
Did you check the actual HVAC assembly behind the glovebox?...Because there is also a 'Blend Door Vacuum Actuator',and if there is a vacuum leak in the little hose,it will not operate properly.
So,in addition to checking the climate control panel,some of this may help also.....

Here follows a cut and paste from a 2003 shop manual.
The system pulls outside (ambient) air through the cowl opening at the base of the windshield. Then it goes into the plenum chamber above the heater-A/C housing. On air conditioned vehicles, the air passes through the evaporator. Air flow can be directed either through or around the heater core. This is done by adjusting the blend-air door with the TEMP control on the instrument panel. The air flow can then be directed from the panel, floor and defrost outlets in various combinations using the mode selector.
There are 17 different mode selections possible. Air flow velocity can be adjusted with the blower speed selector switch on the instrument panel.
On A/C equipped vehicles the ambient air intake can be controlled by opening and closing the recirculating air door. When placed in RECIRC, air that is inside vehicle is removed continuously and recirculated through unit housing. Ambient air cannot be controlled on vehicles without A/C. The system uses outside air at all times. The air conditioning compressor can be engaged by turning the fan switch counterclockwise from the off position. It can also be engaged by placing the mode control in the mix to defrost positions. This will remove heat and humidity from the air before it is directed through or around the heater core.
All vehicles are equipped with a common heater- A/C housing assembly. The system combines air conditioning, heating, and ventilating capabilities in a single unit housing mounted under the instrument panel. On heater-only systems, the evaporator coil is omitted from the housing and replaced with an air restrictor plate. Outside air enters the vehicle through the cowl top opening at the base of the windshield, and passes through a plenum chamber to the heater-A/C system blower housing. Air flow velocity can then be adjusted with the blower motor speed selector switch on the heater-A/C control panel. The air intake openings must be kept free of snow, ice, leaves, and other obstructions for the heater-A/C system to receive a
sufficient volume of outside air. It is also important to keep the air intake openings clear of debris because leaf particles and other debris
that are small enough to pass through the cowl plenum screen can accumulate within the heater-A/C housing. The closed, warm, damp and dark environment created within the heater-A/C housing is ideal for the growth of certain molds, mildews and other fungi. Any accumulation of decaying plant matter provides an additional food source for fungal spores, which enter the housing with the fresh air. Excess debris, as well as objectionable odors created by decaying plant matter and growing fungi can be discharged into the passenger compartment during heater-A/C system operation.
The heater and optional air conditioner are blend-air type systems. In a blend-air system, a blend-air door controls the amount of unconditioned air (or cooled air from the evaporator on models with air conditioning) that is allowed to flow through, or around, the heater core. A temperature control knob on the heater-A/C control panel determines the discharge air temperature by moving a cable, which operates the blend-air door. This allows an almost immediate manual control of the output air temperature of the system.
The mode control knob on the heater-only or heater- A/C control panel is used to direct the conditioned air to the selected system outlets. The mode control switch uses a cable to control the mode door, while
the recirculation air door is operated by a vacuum actuator motor.
On air conditioned vehicles, the outside air intake can be shut off by selecting the recirculation mode (Recirc) with the mode control knob. This will operate a vacuum actuated recirculating air door that closes off the outside fresh air intake and recirculates the air that is already inside the vehicle.
The optional air conditioner for all models is designed for the use of non-CFC, R-134a refrigerant. The air conditioning system has an evaporator to cool
and dehumidify the incoming air prior to blending it with the heated air. This air conditioning system uses an evaporator probe to maintain minimum evaporator temperature and prevent evaporator freezing, and cycles the compressor clutch.-

The vehicle uses vacuum to operate only the recirculation door. All other controls are cable. When vacuum is supplied to the actuator, the door moves to the Recirculation position. The actuator is spring loaded so the door moves to the Outside-air position when there is no vacuum supplied. The operation of the door can be viewed by removing the blower motor and looking up into the unit inlet.
Normally, vacuum is supplied to the actuator by placing the Circulation control knob in the Recirculation position. The Mode and the circulation control are mechanically interlocked so the circulation control cannot be placed in the RECIRC position if the mode control is at or between the mix and defrost positions. Vacuum is supplied to the actuator only when circulation control is at the RECIRC position. If the circulation control is between the outside air position and RECIRC position the system will be in outside air. If the circulation control is in the RECIRC position and the mode control is moved from the floor to the defrost positions, the circulation control
will move from the RECIRC position, to the outside air position beginning at the mix position. This is to prevent window fogging.
The recirculation door actuator is a vacuum controlled actuator used to control movement of the recirculation door in air conditioner equipped vehicles.
The instrument panel must be removed from the
vehicle to gain access to the recirculation door actuator.
(1) Remove the battery negative cable
(2) Remove instrument panel from vehicle
(3) Disconnect vacuum line harness connector from
the nipple on the recirculation door actuator.
(4) Release the latch that secures the recirculation door actuator mount to the stanchion on the heater- A/C unit housing, and disengage the recirculation door actuator from the housing.
(5) Disconnect the recirculation door actuator linkage
from the recirculation door lever.
(6) Remove the recirculation door actuator from the heater-A/C unit housing.
2003 PT Cruiser (Base-N/A) Patriot Blue Pearl Purchased @ Police Impound Auction for $1,000.
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Old 29 May 2014, 09:07 pm
Young Cruiser
Join Date: May 2014
Location: Lyons, Oregon
Posts: 87
Default Re: 06 pt ac not working

I know this is a little old but is there a difference between the 03 setup and the 06? Thanks.
'06 Cruiser Touring, 157k, Cool Vanilla, Auto
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