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Ford Excursion Forums > Ford Excursion V8, V10, and Powerstroke > Gas Engine Excursions
Vacuum leak
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HBJJAM
• Minneapolis, MN, USA
• Registered on 6/23/2005
• 94 posts
1 Vehicle
Posted:7/16/2010 04:53
I know I have a leak 'somewhere' since when ever I have the A/C on that dash vents will fluctuate between the front vents and the defrost
Really stinks when the outside temp is up like this past week.
What is the census on the best way to troubleshoot a leaking vacuum?
Anyone else have or had this and found maybe a particular area or componet that is more sustable to failure?
There are so many damn lines that it is hard to her this leak.

Btw, it is a 2000 V10 with aprox 109,000 on the dial.

thanks
LANDYOT  SuperMotors Member
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Subscriber since 11/23/2003
• Newport News, VA, USA
• Registered on 7/15/2003
• 1,110 posts
Posted:7/16/2010 12:45
My first guess would be the lines that service the locking hubs (assuming yours is 4WD).

I've known a couple folks who replaced all of the vacuum lines on a couple cars (not Excursions), and they both commented that the car "felt" much better afterwards. It might be time for yours.
HBJJAM
• Minneapolis, MN, USA
• Registered on 6/23/2005
• 94 posts
1 Vehicle
Posted:4/8/2011 16:36
YEA well this is still an issue
I have done all the testing I can find and am still coming up short!
I removed the vac res and just ran the lines together, at least doing this kept the vent control out the dash until i floored it on the test drive.
anything over 65mph or 22rpm also lost the vent to defrost direction
I am at a loss of what i am chasing.
I am starting to think it is more into the a/c controls then anything else

anyone have other ideas?
Ford Excursion Forums > Ford Excursion V8, V10, and Powerstroke > Gas Engine Excursions
Vacuum leak
Thread Statistics:     Users to Post: 2   |   Total Posts: 3   |   Total Views: 2869
You must be logged in to post in or subscribe to this thread.Pages: 1

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