1994 Dashboard Panel Vent problem

csteiger · 06-06-2003, 12:24 PM

Hi all,

I'm new to the forum so if I'm in the wrong place, please forgive me. My question is about heating / AC vent control. First of all, the heat and AC works fine except for the vent control which only blows out of the defrost duct. I'm pretty sure that its a vacuum problem, but I'm not sure where to start looking. Any help or suggestions would be greatly appreciated.

Thanks!!

jalangst · 05-11-2006, 09:12 PM

I see no one replied to your problem....did you ever figure it out. I'm having the same problem but it's only when I accelerate. Fine when cruising but I give it a little gas and the vents change places and head to the defrost location. Anyone have a clue?

tmoss · 05-12-2006, 07:11 AM

This should help a lot.........you either loast the vauum line in the engine compartment or often, pulling the conttol panel causes the yellow vacuum line to pull off the vacuum motor that changes the air from the windshield to the dash vents......

http://forums.mustangworks.com/attac...achmentid=5074

jalangst · 05-12-2006, 05:34 PM

I know it's a vacuum problem with mine. I've seen some people say you've got a leak somewhere. I pulled all my lines and checked them out. They look crack free. I figured since it lost vacuum hold only when I accelerated it was just a small leak and then wasn't strong enough to hold it at that point. I'm not sure. If anyone has any other ideas, let me know.

Gearhead999 · 05-12-2006, 05:50 PM

The vacuum resesivor is probably bad. It won't hold enough vacuum when you're accelerating to keep the door in place.

To find a leak you can blow smoke, with a smoke machine, through the hoses and components to see the leak.

06-06-2003, 12:24 PM	#1
csteiger Registered Member Join Date: Jun 2003 Location: Melbourne Florida Posts: 1	1994 Dashboard Panel Vent problem Hi all, I'm new to the forum so if I'm in the wrong place, please forgive me. My question is about heating / AC vent control. First of all, the heat and AC works fine except for the vent control which only blows out of the defrost duct. I'm pretty sure that its a vacuum problem, but I'm not sure where to start looking. Any help or suggestions would be greatly appreciated. Thanks!!

05-11-2006, 09:12 PM	#2
jalangst Registered Member Join Date: Sep 2002 Posts: 26	Re: 1994 Dashboard Panel Vent problem I see no one replied to your problem....did you ever figure it out. I'm having the same problem but it's only when I accelerate. Fine when cruising but I give it a little gas and the vents change places and head to the defrost location. Anyone have a clue?

05-12-2006, 07:11 AM	#3
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Re: 1994 Dashboard Panel Vent problem This should help a lot.........you either loast the vauum line in the engine compartment or often, pulling the conttol panel causes the yellow vacuum line to pull off the vacuum motor that changes the air from the windshield to the dash vents...... http://forums.mustangworks.com/attac...achmentid=5074 __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

05-12-2006, 05:34 PM	#4
jalangst Registered Member Join Date: Sep 2002 Posts: 26	Re: 1994 Dashboard Panel Vent problem I know it's a vacuum problem with mine. I've seen some people say you've got a leak somewhere. I pulled all my lines and checked them out. They look crack free. I figured since it lost vacuum hold only when I accelerated it was just a small leak and then wasn't strong enough to hold it at that point. I'm not sure. If anyone has any other ideas, let me know.

05-12-2006, 05:50 PM	#5
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: 1994 Dashboard Panel Vent problem The vacuum resesivor is probably bad. It won't hold enough vacuum when you're accelerating to keep the door in place. To find a leak you can blow smoke, with a smoke machine, through the hoses and components to see the leak. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

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