Question about 2006 Pontiac G6

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CLICKING SOUND WHEN HEATER IS ON, UNLESS RECYCLE MODE IS ON

CLICKING SOUND, OR I SHOULD SAY A SOFT THUMP ABOUT EVERY TWO SECONDS ANY TIME THE HEATER, DEFROST OR AC IS RUNNING, UNLESS THE AIR RECYCLING MODE IN ON. IT ALMOST SOUNDS AS IF A BAFFLE OR CONTROL FLAP OF SOME KIND IS OPENING AND CLOSING.

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  • 58 Answers

Sound like a vacumm leak at one of the baffle door controlers. Look at heater box when makeing noise, should be able to see which controler is going in and out. Once you isolate which is the culprit check the hose circuit for that door.

Posted on Jun 19, 2009

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Posted on Jan 02, 2017

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1 Answer

Both heater an ac gone took car to dealer for ac problem now its both heater and ac


What A/C problem did you have , original complaint for taking to the dealer ? Does the blower motor blow air out of the vents , when switching from floor to center vent to defrost does air change direction ? What make model an year is your vehicle . Does your vehicle have manual or automatic climate control . Were there any codes stored in the control panel ? Mode door or temperature control problem ? Do you here any clicking behind the dash ?

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Hearter temp control was blowing too hot, now only blows cold


Clicking sound you hear is the worn brushes in your blower motor. At this point the blower moter may or may not start with the switch. THe blower motor is faulty so I would change that first, then check for vacuum leaks or faulty selector cable for the heat blend door. It could have came off door side or heater control side.

Dec 14, 2013 | 2010 Dodge Nitro

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If the moisture is oily, your heater core could be leaking.
If the moisture is dry, check to see if your ac compressor is running in defrost mode.
The air cond dries the air in defrost mode.

Feb 21, 2013 | 1996 Honda Accord

1 Answer

Ac light turns on when switch is on defrost position but ac switch is off


The defrost feature in most later vehicles utilizes the AC to speed the drying of the windshield inside. It is the mfr's choice as to whether to let you know that this is happening. ACs cool by extracting moisture from the air . . . or the inside of your windshield. BTW, in the defrost mode, you can use the heater while the AC is running this warms the air that the AC is drying- it works fine. Using the AC does increase fuel usage so some makers might not want you to know that it is operating while in the defrost mode.

Jun 01, 2012 | 2008 Pontiac Vibe

1 Answer

The air only blows out only on defrost on my 91 chevy truck


air blows out only defrost possible cause could be faulty ac and heater mode switch or broken vacuum line to ac and heater vacuum actuator.you have to remove ac and heater control switch to check it out.

Dec 05, 2011 | 1991 Chevrolet C1500

1 Answer

The heater/AC fan makes a clicking sound when it is in deforst mode.


the ac compressor cycles when you have the defrost on that is the clutches on the air compressor

Sep 21, 2011 | 2000 Chevrolet Silverado

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

1 Answer

My air conditioner or heater no sure is clicking alot when i turn the heater on how do i fix it


Lift the hood and watch AC compressor, you will probably see that engaging, and disengaging regularly when defrost is on. ( that is probably your clicking sound your hearing) The AC coming on while in defrost mode, is normal, as it aids in removing moisture, thus defrosts faster. If it appears to happen too often, you may be low on freon, otherwise, you can shut engine off, and remove connector at AC compressor, but be aware, it won't defrost as fast, or as efficiently. If you do remove that connector, I'd advise every once in a while to put it back on for a day or so, to keep the compressor from seizing up. The proper thing would be to have AC system checked first.

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1 Answer

Thumping sound under dash when start or shut down.


I take a shoot here you can try this. try pulling the fuse or fuses that go to your heater blower and heater controls. If it stops check your heater blower it may be going bad, if you find nothing there, leave the blower unplugged and try turning your key on and see if you still hear it. If so I would think that the heater control is mess up and open and close the air blend door or you may have a wire shorted out under the dash some where.

Nov 27, 2008 | 1994 Chevrolet C1500

2 Answers

Heater


Pull the AC control in the dash and verify that there is vacuum going to it, all the different air diversion doors are operated by seperate vacuum motors controlled by the ac control head in the dash, as you switch it it sends vacuum to the correct location to work that door for the desired air outlet, dash, floor etc..

Sep 18, 2008 | 2004 Chrysler Pacifica

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