Question about 2001 Suzuki Grand Vitara

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No air coming out of defrost

Strange clicking sound under radio and no air coming through vent in defrost position

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It sounds like you have a bad blend door actuator that will need to be replaced.

Posted on Nov 03, 2012

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Posted on Jan 02, 2017

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My 99 chevrolet monte carlo z34 heat is not that hot and air works for defrost but not dash vents?


check radiator fluid level it take hot radiator fluid to pass through the heater core to produce the heat in your car VIA the fan. also check or replace your thermostat it could be bad and stuck in an open position thus radiator fluid not getting hot, no hot fluid no hot air
the other problem sounds like a duct hose under you dash has come loose locate and reattach.

Apr 30, 2012 | 1999 Chevrolet Monte Carlo

1 Answer

Clicking noise from dash near a/c controls and radio area. possibly fan assembly fault


I doubt if you have a fan problem. More than likely you have a bad actutor motor. There are 2 small electric actuator motors under the dash. The temperture door actuator moves the air temperature door, which controls the temperature of the air coming from either the a/c or heater vents. The mode actuator (which is probably the one you hear clicking) controls the mode of operation, or more simply, which vents the air will be coming out of. When the internal gears of the mode actuator fail and start slipping, they make a loud repetative "clicking" sound, which is what you are hearing. Another symptom that may or may not accompany this situation is a longer than usual wait time for your mode selection to occur. So to sum up, a loud repetative clicking sound from the center of the dashboard possibly accompanied by a longer than usual wait time for your ac,heat or defrost mode to occur, usually indicates a failing mode door actuator.

Sep 20, 2011 | Mercury Grand Marquis Cars & Trucks

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I HAVE A 2002 FORD TAURUS 3.0 ENGINE. MY AIR ALL OF THE SUDDEN HAS STOPPED COMING THROUGH THE VENTS, BUT STRANGELY ITS COMING OUT OF MY DASH VENTS. I HAD STOP LEAK AND FREON INSTALLED AND STILL NOTHING,...


If you cannot change the air flow from the heater vents, defroster vents, to dash vents, etc. as your control switch indicates the problem could be a loose vacuum line. It could have come loose from the engine under the hood. If not you will need to remove the control from the dash and check for vacuum at the control. If you have vacuum there you will need to replace the switch,

Aug 02, 2011 | 2002 Ford Taurus

1 Answer

Vent control for climate control does not change positions


Air will only come out of the defrost vents on the dash i assume? The defrost vent is the default position when the system looses vacuum. Under the hood look for a broken or disconnected vacuum line on or near the engine in the area of the passenger side of the firewall. You may even hear the a slight "hisss" indicating a vacuum leak. Reconnecting the line to the appropriate port will restore proper vent operation.

Sep 04, 2010 | 2000 Oldsmobile Bravada

1 Answer

Heater control to feet has never worked 95% of the time since new


sounds like vent flap valve wire has come off (under dash beried in plastic cowling.....

Feb 14, 2010 | 2006 Honda CR-V

1 Answer

Air conditioing stops coming out vents and comes out defrost vent


It sounds like you have a vacuum problem. When the engine is running it generates a vacuum in the exhaust manifold. That vacuum is used to move the actuators inside your dash to the position you chose with your controls. If you have a vacuum leak or something interrupts the vacuum, the actuator will move to its default position which is the defrost vents. It sounds like the act of accelerating is somehow interrupting the vacuum. I'd look for little cracks in your vacuum lines and check your ERG valve.

Jun 17, 2009 | 1994 Oldsmobile Cutlass Ciera

2 Answers

Dash vents will not blow air


It may be the mode actuator. Have you heard any clicking or other strange noise ? Under the drivers rear seat, in a plastic box is a fuse panel. Remove the two retainers, and the cover. Remove the HVAC or A/C fuse for a minute or two. Reinstall the fuse and this will make the A/C system relearn. Whwn you put the fuses back do not touch the A/C controls. Start the truck and leave it run for two or three minutes. Then try to change the vent from floor to vent and defrost. If this does not work you will need a mode motor. Good Luck

May 22, 2009 | 2006 GMC Envoy

1 Answer

Front vents will not work


If they are stuck on defrost,then the problem is a little vaccum line that comes through the firewall as all the climate controls are vaccum controlled,so look for a small green or black plastic line unhooked.

Dec 25, 2008 | 2005 Chrysler Town & Country

1 Answer

Air condition


Have you checked the diverter doors under the dash??
It sounds like a vaccum hose may have fallen off your vent controller.
I have had similar problems and found that the air WAS moving, but it was all going up through the defrost vents at the windshield.
A quick check of the vac. lines showed that one under the glove box was pulled off.
with the engine running, try setting the air settings to all the options ( vent/floor/defrost..etc..)
See it you can feel or hear the diverters moving under the dash..

Jul 02, 2008 | 1994 Chevrolet Lumina APV

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