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I had this problem before in a different car and found out the duct work to the vent had come loose. The duct work could also have holes in it or blocked. To check this out you have to go into the dash.
Water is dripping on your ac from a duct? Or is the unit it self leaking Are you sure you don't need a Professional Air Duct Inspection?
If you are in the market for an Air Duct cleaning check out Air Duct Cleaning Dallas Tx.
you will have to inspect the blend doors. These are the ones that control the flow of the air in the AC duct. It is under the dashboard. There might be loose linkages or parts that you may just need fitting or a bad motor for the door.
Drain the engine coolant into a suitable container.
CAUTION
When draining engine coolant, keep in mind that cats and dogs are
attracted to ethylene glycol antifreeze and could drink any that is
left in an uncovered container or in puddles on the ground. This will
prove fatal in sufficient quantity. Always drain coolant into a
sealable container. Coolant should be reused unless it is contaminated
or is several years old.
Disconnect the heater hoses. Be careful not to damage the core by
pulling on the hose to remove. Cut the hoses if they will not come off
easily.
Remove the instrument panel.
Disconnect the resistor assembly.
If possible, disconnect and move the duct (non air conditioning)
or the evaporator housing (air conditioning) to the right to gain
clearance for the heater unit. If equipped with air conditioning, do
not disconnect air conditioning system until absolutely necessary.
Refer to
for discharging, evacuating and recharging the system.
Remove the instrument panel stay and heater unit.
Disassemble the heater unit by removing the duct, mode control case, core assembly and heater core.
To install:
Assemble the heater unit by installing the duct, mode control case, core assembly and heater core.
Install the heater unit and instrument panel stay.
Connect the duct (non air conditioning) or the evaporator housing
(air conditioning) to the heater unit. Evacuate and recharge the air
conditioning system if the system was discharged to remove the
evaporator assembly.
Connect the resistor assembly.
Install the instrument panel as outlined in this section.
Connect the heater hoses. Be careful not to damage the core by pulling on the hose.
Refill the engine coolant into a suitable container.
Connect the negative (-) battery cable and check for leaks.
Disconnect the negative battery cable from the remote battery post located near the right strut tower.
CAUTION
After disconnecting the negative battery cable, wait 2 minutes for the driver-s/passenger-s air bag system capacitor to discharge before attempting to do any work around the steering column or instrument Remove the instrument panel by removing or disconnecting the following:
NOTE
On the LHS or 300M, remove the center bezel prior to the shifter bezel Shifter knob Allen screwBoth instrument panel end coversUsing a trim stick tool, gently pry upward on the shifter bezel; then, disconnect both wiring connectors and a light bulb socket connector; then, remove the socket.
Remove the 2 lower instrument panel cover screws (outside end) and disconnect the deck lid release switch wiring connector. Pull the lower instrument panel cover rearward releasing the clips. Remove the cable-to-brake release handle. Pull the cover rearward and remove it.
If equipped for 6 passengers, remove the lower floor bin.
If equipped for 5 passengers, remove or disconnect the following items:
Center bezel using the trim stickHeater/air conditioning housing assembly control switch and the traction control switch wiring harnessesBezel from the vehicleTwo left side console side cover screws, pull the cover outward and remove from the vehicleLower glove box door; the 2 screws are located at the right console side cover, pull outward and remove it2 bracket screws and the 2 inside the console bin; then, remove the console2 center lower instrument panel nuts4 steel reinforcement-to-lower instrument panel cover bottom bolts16-way DLC from the reinforcementleft floor duct/silencer pad screw and the padSteering column shroudsShift interlock cable at the ignition switchColumn wiringThe under column duct sectionLeft panel air conditioning outlet ductThe 4 brake pedal support bracket-to-column mounting boltsLower the steering columnHeater/air conditioning housing and the Air bag Control Module (ACM) harness connectors then, the 2 ground eyelets from the floor tunnel near the bulkheadUsing a trim stick, carefully, pry out on the left and right A-pillar trim moldings and slide them rearward to remove them.
Using a trim stick, carefully pry upward on the instrument panel top cover, and remove it.
From both sides, remove the scuff plate screw. Using a trim stick, carefully, pry out the scuff plates and remove them.
Remove or disconnect the following:
3 right side cowl panel screws and the panel3 left side cowl panel screws and the panelRemove the right side under dash silencer and pad2 right side radio antenna and amplifier harness connectorsLeft side junction block and Body Control Module (BCM) harness connectors8 instrument panel-to-chassis screwsPull the instrument panel rearwardInstrument panel from the vehicle with the help of an assistantischarge and recover the air conditioning system refrigerant.
Drain the cooling system into a clean container for reuse.
Place shop cloths in the interior to catch any excess coolant.
Remove or disconnect the following:
WARNING
The air conditioning lubricant used in this system absorbs moisture readily. Do not leave any portion of the system open for any long period of time.
Air cleaner hose and the air distribution ductHeater hoses-to-dash panel spring type fasteners and the heater hoses from the heater core. Plug the openings to prevent coolant spillage.Refrigerant lines-to-expansion valve nut and separate the refrigerant lines from the expansion valve. Plug the openings to prevent contamination.3 heater/air conditioning housing assembly-to-chassis nuts from the engine compartment2 defroster duct screws and the ductHeater/air conditioning housing assembly-to-dash panel nuts and screws4 rear seat heat duct nuts and the ductRear seat heat duct elbow push-pin fastenerElectrical connector from the heater/air conditioning housing assemblyPull the heater/air conditioning housing assembly rearward and remove it from the vehicle2 heater core-to-heater/air conditioning housing assembly screwsHeater core from the heater/air conditioning housing assembly
contact me and i can tell you how to put it back together
ALL 850 and S-70 models with climate control have these issues and i am an ASE VOLVO MASTER TECH and you must have a lot of experiance to troubleshoot and fix these systems and 20 pages of tests it sounds like one of the damper motors is not working these motors direct air flow to different duct outlets
That air duct is much too new to fail on its own. Sounds like you might have a mouse living in the duct work - blocking the vents. Have you looked at the cabin filter compartment? Strange smells? How does the heat work?
It sounds like a restriction in your ducting. Feel the A/C vents in the hot rooms to see if cold air is blowing out of them. If the ducts are restricted, then it is possible that the air conditioning coils are freezing up from lack of circulation. Inspect the ducts if you can to see if there is any restriction.
Note that even if you feel air coming out of the ducts, it could be ambient as opposed to cold. The best thing is to measure the air temperature coming out of the ducts. It should be around 20 degrees colder than the ambient air at the intake of the A/C.
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