FordExcursions.com Forums
papajoe
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• Snellville, GA, USA |
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• Registered on 6/6/2007 |
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• 2 posts |
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 Posted:6/6/2007 18:12 |
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I purchased a 2000 Excursion used from another retired couple and it came to me with a fair share of issues. The last major issue was ALL door locks would not work but I resolved that by replacing the resistors on the motors. The one that has me stumped right now is the A/C control system... for some reason the air will only blow out the top air vents which makes it a pain in this warm GA weather. I know the controls work off a vacuum system but am not sure where to track down the problem. Are there any savvy ones out there that might be able to provide me with a suggestion or solution...?
Thanks,
Joe  |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
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Posted:6/6/2007 18:33 |
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Hi Joe,you definitely have a vacuum leak which causes the heat/air system blend dor to send all air to the defroster vents.
There's place to check for vacuum leaks,one is the line/s that go to the front axle hubs(if you have 4x4) as they sometimes crack and leak or plain disconnect.
Another is the grey vacuum line that goes to the coolant shut off valve that interacts with your AC system when set to "Max" sometimes that line can pop off.
I'll run out to the truck and take a pic of it's location.
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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papajoe
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• Snellville, GA, USA |
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• Registered on 6/6/2007 |
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• 2 posts |
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Posted:6/6/2007 19:23 |
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I've tried tracking all air lines from vacuum pump, but it appears all the lines are in ok shape. The vacuum pump seems to make a crazy clicking noise so I'm curious if that may be the issue. |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
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Posted:6/6/2007 21:33 |
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Could be the vacuum pump altogether but I don't know what the pesky critters go for at the parts store?
Here's a couple photos of the suspected leaky vacuum areas,the first is the coolant shutoff valve the second is the line going to the front right hub.
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Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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Ace
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• Malibu, CA, USA |
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• Registered on 10/27/2005 |
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• 54 posts |
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Posted:7/10/2007 01:42 |
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you know, I have the same problem with my X, I quickly checked before it got dark tonight and didn't see anything that was disconnected or cracked, I'll check again tomorrow. Is there any other reasons for this? It is starting to bug me, especially since summer is here in So Cal! |
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monsta
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• The Big Island, HI, USA |
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• Registered on 1/5/2002 |
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• 1,056 posts |
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Posted:7/10/2007 13:09 |
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There is also a vacuum line up under the passenger footwell that can break or become disconnected. For the life of me though I can't tell you where it is exactly.
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
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Posted:7/12/2007 20:01 |
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Just behind the glovebox is multiple vacuum lines,here's some photos from my 2002 but should be the same for all years Excursions.
  
Similar Thread
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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