Notices
1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by: Real Truck

Vacuum Leak???

Thread Tools
 
Search this Thread
 
Old Aug 24, 2012 | 08:54 AM
  #1  
hawgystyle's Avatar
hawgystyle
Thread Starter
|
Senior User
Joined: Jun 2008
Posts: 278
Likes: 0
From: Jupiter, Fl
Vacuum Leak???

I have a 2002 Ford F-250 w/ 7.3L. I beleive there is a vacuum leak in my system somewhere. My A/C is stuck on defrost on any setting. But I have an electronic shift 4x4 and it clicks on instantly and I think that is vacuum opperated. Where should I start to try and fix this problem.
 
Reply
Old Aug 25, 2012 | 05:32 AM
  #2  
CPaulsen's Avatar
CPaulsen
Senior User
Joined: Apr 2011
Posts: 447
Likes: 1
From: Southern Oregon
Mine did the defroster thing also...first thing I checked was the connection to the vacuum box where the pump is. It was a loose connection.
 
Reply
Old Aug 26, 2012 | 12:21 AM
  #3  
hawgystyle's Avatar
hawgystyle
Thread Starter
|
Senior User
Joined: Jun 2008
Posts: 278
Likes: 0
From: Jupiter, Fl
I just started playing with some hoses and i followed two hoses to this little box thing that has wires going to it. I do not know what this is, or what it could be called.
 
Reply
Old Aug 26, 2012 | 04:27 AM
  #4  
CPaulsen's Avatar
CPaulsen
Senior User
Joined: Apr 2011
Posts: 447
Likes: 1
From: Southern Oregon
That is the vacuum reservoir and pump.
 
Reply
Old Aug 26, 2012 | 05:29 PM
  #5  
hawgystyle's Avatar
hawgystyle
Thread Starter
|
Senior User
Joined: Jun 2008
Posts: 278
Likes: 0
From: Jupiter, Fl
not those, its two lines that come off the reservoir that go into what im taking about. but its right next to both of those. i'll take a picture of it when this tropical storm passes
 
Reply
Old Aug 26, 2012 | 05:39 PM
  #6  
Papa Tiger's Avatar
Papa Tiger
Fleet Owner
10 Year Member
Community Builder
Liked
Loved
Joined: Mar 2012
Posts: 26,246
Likes: 4,152
From: Near Cal. Avenue
Bad seal in the blend door controller.
 
Reply
Old Aug 27, 2012 | 12:52 AM
  #7  
GorillaNuts's Avatar
GorillaNuts
New User
Joined: Aug 2012
Posts: 10
Likes: 0
Just start pulling and plugging hoses. Start at the ones u can reach by the pump it self, play with those for a while. Then if your getting vac still, go to hubs and unplug the hoses and plug them with something ( I used a Robertson....lol) I found out both my hub seals are gone, and with other diagnosing my solenoid is no good.....
 
Reply
Old Aug 27, 2012 | 05:11 PM
  #8  
redford's Avatar
redford
FTE Leadership Emeritus
25 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2000
Posts: 23,174
Likes: 1,679
From: Stephensville WI
Club FTE Gold Member
I would check the vacuum seal on your hubs or at the vacuum solenoid.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Ways Ford is LOSING to the Competition

 Joe Kucinski
story-1

Top 6 Best Deals Available on New Fords & Lincolns Right Now

 Brett Foote
story-2

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-3

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-4

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-5

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-6

Every 2026 Ford Engine Explained

 Brett Foote
story-7

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-8

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-9

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
djsr369
1999 - 2016 Super Duty
0
Sep 28, 2018 04:05 PM
RV_Tech
1999 - 2003 7.3L Power Stroke Diesel
12
Nov 4, 2016 02:19 PM
mh34444
6.0L Power Stroke Diesel
5
May 29, 2010 06:40 AM




All times are GMT -5. The time now is 06:15 PM.

story-0
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-1
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-2
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-3
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-4
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-5
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-6
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-7
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-8
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-9
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE