Go Back   Ford Expedition Forum > Ford Expedition Forum > General Discussion

Sponsored Ads
Register to remove these ads.


General Discussion

Vaccumm Leak Or Something Else Going On?


This is a discussion on Vaccumm Leak Or Something Else Going On? within the General Discussion forums, part of the Ford Expedition Forum category!
Register to remove these ads. It's free! 2001 Ford Expedition bought this truck about 4 months ago with a check ...



Reply
 
LinkBack Thread Tools Display Modes
Old 11-17-2010, 10:30 PM   #1 (permalink)
 
Extortion's Avatar
Registered User

 
Join Date: Oct 2010
Location: Tampa
Posts: 38
Angry Vaccumm Leak Or Something Else Going On?


Register to remove these ads. It's free!
2001 Ford Expedition

bought this truck about 4 months ago with a check engine light on... i was told it was a vaccumm
leak but the truck ran good.. the obd2 code that comes up is p0171 & P0174 (Too Lean)

last night there was heavy rain.. idk if that could have a role in it.. but today started it up fine and drove it for about 20 min then started noticing it was missing/stumbling.. even at idle but it comes and goes.. could this be the vacumm leak just now getting worse?? or fuel related

i had low fuel as well ....added some and it is still missing
Extortion is offline   Reply With Quote
Old 11-18-2010, 01:48 AM   #2 (permalink)
 
Lane24's Avatar
technical advisor

 
Join Date: Dec 2006
Location: Alberta , Canada
Posts: 1,869
Default

Try ths link. It may help you... http://expeditionforum.com/showthread.php?t=4926 And you may also have to clean your MAF, and clean or replace your IAC. Let us know if this helps.
__________________

98' Eddie Bauer 5.4L / 5 inch lift / Hankook Dynapro AT-M 315/75/16's
Official member of the LIFTED EXPY Club / Official Member of the Red Eddie Bauer Club

Last edited by Lane24; 11-18-2010 at 01:54 AM.
Lane24 is offline   Reply With Quote
Old 11-18-2010, 10:58 AM   #3 (permalink)
 
ssbroly's Avatar
Full Access Members

 
Join Date: Mar 2010
Location: Ohio
Posts: 153
Default

That's a really good link. Hopefully it's an easy fix for ya. In my case, I spent 3 weeks searching for the problem, no dice. Shop had it for 5 days and finally found that the gasket between the intake and the the block had a leak on the back side of the engine.
__________________

2000 Eddie Bauer 5.4L
Mac Cold Air Intake
Clear Headlights and corner markers
Weathertech Rain Guards F&R
Strutmaster conversion kit
147K
"I feel sorry for people who don't drink. When they wake up in the morning, that's as good as they're going to feel all day"
Frank Sinatra
ssbroly is offline   Reply With Quote
Old 11-18-2010, 11:21 AM   #4 (permalink)
 
Extortion's Avatar
Registered User

 
Join Date: Oct 2010
Location: Tampa
Posts: 38
Default

how much was that to have fixed?
Extortion is offline   Reply With Quote
Old 11-18-2010, 11:27 AM   #5 (permalink)
 
ssbroly's Avatar
Full Access Members

 
Join Date: Mar 2010
Location: Ohio
Posts: 153
Default

round 700. I actually spent about 45 minutes on the phone with the head mechanic going over everything I had already checked. He was stumped too. They ended up smoking the engine to find the leak. The gasket would seal itself back up once the truck warmed up. That was the reason it was so hard to find. It just had a real bad idle when warming up, would almost stall out at times.
__________________

2000 Eddie Bauer 5.4L
Mac Cold Air Intake
Clear Headlights and corner markers
Weathertech Rain Guards F&R
Strutmaster conversion kit
147K
"I feel sorry for people who don't drink. When they wake up in the morning, that's as good as they're going to feel all day"
Frank Sinatra
ssbroly is offline   Reply With Quote
Old 11-18-2010, 11:32 AM   #6 (permalink)
 
Extortion's Avatar
Registered User

 
Join Date: Oct 2010
Location: Tampa
Posts: 38
Default

mines almost doing the opposite.. runs fine but after 20 min of driving it just starts stummbling at lights and driving
Extortion is offline   Reply With Quote
Old 11-21-2010, 11:10 PM   #7 (permalink)
 
Extortion's Avatar
Registered User

 
Join Date: Oct 2010
Location: Tampa
Posts: 38
Default

turned out i had 2 bad coils.. so i replaced those and all the spark plugs.. running back to normal..
also found the vacuum leak. intake gasket needs replaced

Last edited by Extortion; 11-21-2010 at 11:11 PM.
Extortion is offline   Reply With Quote
Old 11-22-2010, 05:57 AM   #8 (permalink)
Registered User

 
Join Date: Jun 2010
Location: Atlanta, GA
Posts: 48
Default

I'm having a similar problem. While in GA, I replaced an extremely dirty air filter then drove the truck back to Baltimore. The truck ran ran fine on the way back an I even notice smoother acceleration. The next morning I start it up and the check engine light comes on and it is idling horribly. I drive the truck and it drives fine but nearly stalls at every light. I disconnect the battery and the check engine light goes out, but the problem persist. I get new plugs and wires thinking that will solve the problem. That fixes the idling problem but a new problem arises. When cruising at any speed and the engine RPM's drop below 1800, if I try to accelerate gradual, the engine stutters. Either flooring it it letting off the gas a bit corrects the problem, but gradual acceleration will produce stutter until the RPM's get above 2000. Could this be a combination of a vacuum leak and bad coils? I was thinking fuel related, filter, injectors etc.

Last edited by curleywon; 11-22-2010 at 05:59 AM.
curleywon is offline   Reply With Quote
Old 11-22-2010, 08:45 AM   #9 (permalink)
 
walnuts4x4's Avatar
Supporting Member

 
Join Date: Jun 2009
Location: Watertown, NY
Age: 31
Posts: 6,464
Default

Originally Posted by curleywon View Post
When cruising at any speed and the engine RPM's drop below 1800, if I try to accelerate gradual, the engine stutters. Either flooring it it letting off the gas a bit corrects the problem, but gradual acceleration will produce stutter until the RPM's get above 2000. Could this be a combination of a vacuum leak and bad coils? I was thinking fuel related, filter, injectors etc.
I'm gonna say vaccum before fuel problem... when I had a similar problem mine was the 90 deg elbow on the PCV hose.... check that first simple and cheap then look for more $$$ problems
__________________

2012 Jeep Patriot....
Formerly a 99 expy with 11" lift and 37s...
walnuts4x4 is offline   Reply With Quote
Old 11-22-2010, 09:42 AM   #10 (permalink)
 
Extortion's Avatar
Registered User

 
Join Date: Oct 2010
Location: Tampa
Posts: 38
Default


Register to remove these ads. It's free!
This is exactly what happened in my Caprice & Roadmaster..
Driving Fine Til about 45 mph.. letting off the gas or flooring it stopped the sputter.. it was Injectors going bad.. Hope That Helped a little

Last edited by Extortion; 11-22-2010 at 09:45 AM.
Extortion is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




GM Truck Forum
Ford Raptor Forum
Chevy Tahoe Forum
Chevy Cobalt Forum
Chevy Camaro Forum
FJ Cruiser Forum
Ford Truck Forum
88-98 GM Truck Forum
73-87 Gm Truck Forum
Dodge Ram Forum
Chevy Equinox Forum
Chevy Cruze Forum
Jeep Liberty Forum
Jeep Forum
Dodge Ram SRT10 Forum
Chrysler 200 Forum
Scion xD Forum
Scion xB Forum
Dodge Challenger Forum
Scion FR-S Forum
Softball Forum
SRT Forum
Nissan Titan Forum
Buick Enclave Forum
Cadillac Forum
Cadillac XTS Forum