95 explorer heater problems, plz help

stumped · 04-21-2007, 09:35 PM

I have a '95 explorer and about 2 or 3 months ago, the heater started messing up. Air comes out of the defroster and the rear air works fine, but if i select floor , mix , or vents it still blows out the defroster and wont change. Any ideas on what might resolve this problem?

*dogfriend* · 04-22-2007, 12:10 AM

My recollection is that the air diverter door (controls whether the air is sent to the defrost vents or panel or floor) is vacuum controlled. You may have a vacuum leak somewhere that doesn't allow the door to work.

**BrooklynBay** · 04-22-2007, 12:14 AM

Welcome to this forum! Plastic vacuum lines are known for cracking at the base where they attach. Follow the vacuum diagram which is under the hood.

nolimitssjca · 04-22-2007, 01:09 PM

in case you're still confused, open the glove box. pull the sides together to allow the box to drop free exposing the dash behind it. Then check on the left. You will see some of the vacuum hoses that control this setup. Good luck!

stumped · 04-24-2007, 04:52 AM

any ideas on where to start looking first, where does that vaccum start? manifold etc. could the switch be bad?

*dogfriend* · 04-24-2007, 09:28 AM

I would start at the switch and see if you have vacuum present. If so, it may be the switch. If not, then you will need to start looking at the hoses to see if they are cracked or broken. Like Brooklyn said, its common for the ends of the hoses to crack when they get old and brittle.

From the 97 manual. Yours should be very similar or the same.

**Turdle** · 04-24-2007, 09:34 AM

Check the lines on the vacuum reservoir bottle.It is a black globe, about 5 inches in diameter, located in the passenger wheel well area--toward front of tire. There are 2 hard lines connected to it-one is supply vacuum (black) the other one goes to the function door (grey)--they run along the passenger wheel well, and can get broken.
Also-check the bottle for water inside-(condensation) by removing it, and shaking it out.
good luck

04-21-2007, 09:35 PM	#1
stumped Wannabe Elite Explorer oregon, usa 1995 explorer xlt Join Date: Apr 2007 Posts: 2 Vehicle Specs (Original Poster)	95 explorer heater problems, plz help I have a '95 explorer and about 2 or 3 months ago, the heater started messing up. Air comes out of the defroster and the rear air works fine, but if i select floor , mix , or vents it still blows out the defroster and wont change. Any ideas on what might resolve this problem?

04-22-2007, 12:14 AM	#3
BrooklynBay Aerostar Forum Moderator Brooklyn, NY 88 89 93 95 96 Aerostars Join Date: Nov 2005 Posts: 45,678 Vehicle Specs	Welcome to this forum! Plastic vacuum lines are known for cracking at the base where they attach. Follow the vacuum diagram which is under the hood. __________________ My list of useful threads. My photo gallery. My product reviews. My list of items for sale. Aerostar owners thread. Aerostar parts work in Explorers, Rangers, and Bronco II thread. History of the Aerostar thread. Aerostar Forum. New Members Forum. Ford/Lincoln/Mercury Forum.

04-22-2007, 01:09 PM	#4
nolimitssjca Wannabe Elite Explorer San Jose, CA 95 XLT, 96 XLT, 97 Mounty Join Date: Aug 2006 Posts: 243 Vehicle Specs	in case you're still confused, open the glove box. pull the sides together to allow the box to drop free exposing the dash behind it. Then check on the left. You will see some of the vacuum hoses that control this setup. Good luck! __________________ 1995 4WD XLT 4.0 OHV 263k (sold) 1996 AWD XLT 5.0 160k 1997 AWD Mounty 5.0 123k 2002 Kawasaki Vulcan 1990 Four Winns 200 Horizon

04-24-2007, 09:28 AM	#6
dogfriend Human-Animal Hybrid Carmichael, CA '97 Sport 4x4 Join Date: Jul 2002 Posts: 8,828 Vehicle Specs	I would start at the switch and see if you have vacuum present. If so, it may be the switch. If not, then you will need to start looking at the hoses to see if they are cracked or broken. Like Brooklyn said, its common for the ends of the hoses to crack when they get old and brittle. From the 97 manual. Yours should be very similar or the same. Attached Images

04-24-2007, 09:34 AM	#7
Turdle Old and in the way Humboldt, Kansas 2000 Mounty Join Date: Jun 2003 Posts: 23,740 Vehicle Specs	Check the lines on the vacuum reservoir bottle.It is a black globe, about 5 inches in diameter, located in the passenger wheel well area--toward front of tire. There are 2 hard lines connected to it-one is supply vacuum (black) the other one goes to the function door (grey)--they run along the passenger wheel well, and can get broken. Also-check the bottle for water inside-(condensation) by removing it, and shaking it out. good luck __________________ Jon 2000 Mountaineer Turdle-gone Vitamin D Wagon Sold also

04-22-2007, 12:10 AM	#2
dogfriend Human-Animal Hybrid Carmichael, CA '97 Sport 4x4 Join Date: Jul 2002 Posts: 8,828 Vehicle Specs	My recollection is that the air diverter door (controls whether the air is sent to the defrost vents or panel or floor) is vacuum controlled. You may have a vacuum leak somewhere that doesn't allow the door to work.

04-24-2007, 04:52 AM	#5
stumped Wannabe Elite Explorer oregon, usa 1995 explorer xlt Join Date: Apr 2007 Posts: 2 Vehicle Specs (Original Poster)	any ideas on where to start looking first, where does that vaccum start? manifold etc. could the switch be bad?