Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Vacuum leak help

Thread Tools
 
Search this Thread
 
Old Sep 12, 2012 | 06:02 PM
  #1  
johngeorge's Avatar
johngeorge
Thread Starter
|
Cross-Country
Joined: Jun 2010
Posts: 68
Likes: 0
Vacuum leak help

I have a 95 F150 and the air will start blowing in the floor under acceleration and back to the dash registers when I let off so I figure I have a vacuum leak somewhere. My question is: Are there any typical areas to inspect first before I start going through everything in the dash? Thanks
 
Reply
Old Sep 12, 2012 | 10:51 PM
  #2  
rla2005's Avatar
rla2005
Fleet Owner
20 Year Member
Community Builder
Liked
Community Favorite
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Start with the white vacuum hose that leads to the HVAC system, it's under the hood on top of the blower motor/heater/evaporator box. VERY common problem.
 
Reply
Old Sep 13, 2012 | 11:18 AM
  #3  
Truckin Bob's Avatar
Truckin Bob
Elder User
Joined: Dec 2003
Posts: 660
Likes: 3
From: Northern California
Originally Posted by johngeorge
I have a 95 F150 and the air will start blowing in the floor under acceleration and back to the dash registers when I let off so I figure I have a vacuum leak somewhere. My question is: Are there any typical areas to inspect first before I start going through everything in the dash? Thanks
And check the vacuum cannister (coffee can) for leaks.

Bob
 
Reply
Old Sep 13, 2012 | 11:44 AM
  #4  
Puddy's Avatar
Puddy
FTE Chapter Leader
Joined: Dec 2007
Posts: 1,931
Likes: 16
From: Edmonton, Alberta
There is also a connector under the dash in the middle, should be a half moon clear connector with a few lines, check and see if it's loose or rubbed on some of the dash bracing
 
Reply
Old Sep 13, 2012 | 01:04 PM
  #5  
nintey4f150's Avatar
nintey4f150
Senior User
Joined: Jul 2007
Posts: 248
Likes: 1
From: south jersey
whats the best way to replace that white line? i notice it goes into one of the harnesses
 
Reply
Old Sep 13, 2012 | 01:15 PM
  #6  
rla2005's Avatar
rla2005
Fleet Owner
20 Year Member
Community Builder
Liked
Community Favorite
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
IMHO....pull that crappy white vinyl/plastic line all the way out of the bundle and replace all of it. For that matter replace all the under hood vacuum lines, all of them are a vacuum leak just waiting to happen.
 
Reply
Old Sep 13, 2012 | 01:36 PM
  #7  
nintey4f150's Avatar
nintey4f150
Senior User
Joined: Jul 2007
Posts: 248
Likes: 1
From: south jersey
i honestly dont even kno where the two ends connect too.. mine is disingrated lol
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
wirebender
1987 - 1996 F150 & Larger F-Series Trucks
8
Jul 23, 2018 09:26 PM
BRONC-OH
1997 - 2003 F150
6
Aug 24, 2017 09:04 AM
pcdocta
Cooling, Heating, Ventilation & A/C
43
Mar 19, 2017 04:16 PM
rollbutt
1968-Present E-Series Van/Cutaway/Chassis
2
Jun 18, 2011 11:57 PM
landjr
Cooling, Heating, Ventilation & A/C
3
Jul 11, 2005 08:56 PM




All times are GMT -5. The time now is 02:12 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE