Heat stop blowing from the dash,... help!

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Jan 17, 2008 | 03:33 AM

troyrhomeo

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Heat stop blowing from the dash,... help!

2001 Nav, the heat stop blowing from the dash-board,
however the heat blows well from the top head-board
control switch.

Q; what could possibly be the fix in getting the heat
blowing from the dash again?

thankyou for your help...

Jan 17, 2008 | 06:19 AM

projectSHO89

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Joined: Jan 2004

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From: St Louis

Vacuum leak, same as usual.

FAQ.

Steve

Jan 18, 2008 | 04:14 AM

troyrhomeo

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a vacuum leak ...?
where? under the hood? under the dash?

help.

Jan 18, 2008 | 06:46 AM

Ron W.

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Joined: Jan 2008

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From: Stockton Ca.

You seem to be implying that the fan motor is functional but you can't control which vent the air comes out of, if this is correct my first guess would be the blend door actuator.

Jan 18, 2008 | 09:13 AM

c_hohensee

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Joined: Feb 2006

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If you cannot control where the air flow comes from I would suspect a vacuum leak. I have yet to experience this on my truck but that is what happened on my Mustang. From what I have read in this forum the most common place for a leak is under the battery. I just discovered a leak from a windshield washer hose that seems to be coming from under the battery so I will be pulling the battery and tray out this weekend to check out what is going on under there.

Jan 18, 2008 | 11:45 AM

yankee7985

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Joined: Nov 2006

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From: Guyton, GA

I have seen the vacuum line cracked on the passenger side of the engine compartment just before it goes into the firewall.

Jan 21, 2008 | 03:21 AM

troyrhomeo

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please help...

i would like to thank you guys for the replys.
whats happening is, when the temperture control setting
on the dash is set to 90 degrees,
all that comes out the dashboard vents is cool air.

however, the heat above on the headliner console,
works perfectly.

all advise is greatly appreciated.
thanks.