Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-08-2013, 03:41 PM
Nick Browning Nick Browning is offline
New User
 
Join Date: Dec 2013
Posts: 2
Nick Browning is starting off with a positive reputation.
Angry Killing me - any help appreciated!

Hi there - first post.

2007 Ford Expedition 5.4L 3V with 92,000 miles on it. Ran like a champ until last night, while on freeway, in cruise, the engine bogs as if it had run out of gas (tank is over 3/4 full), then snaps back, then does it again, I pull over, engine dies. Will sometimes start from then, and will idle fitfully, then die. Sometimes will start and allow rev's to 3000 in park, but any attempt to drive vehicle results in stall.

OBD-II tester shows NO codes.

Fuel pressure tested at Schrader valve shows 60-70 psi regardless of revs (when it decides to run). Holds pressure with no problems.

I replaced the TPS (common things being common) with no change in behavior. Throttle body had very limited deposits and the throttle plate moved through its rotation without binding.

I looked for the FPDM, but could not find it in the left rear area, and all indications are that it is in with the fuel pump.

It feels like there is limited or intermittent fuel flow, but that seems highly unlikely given the adequate fuel pressure.

I could also be convinced there was a problem with the electronic throttle control, but it seems like that would throw a code. I feel a little foolish for replacing the TPS without getting a code, but it seemed easy.

Any ideas would be greatly appreciated.
Reply With Quote
  #2  
Old 12-09-2013, 04:13 PM
Nick Browning Nick Browning is offline
New User
 
Join Date: Dec 2013
Posts: 2
Nick Browning is starting off with a positive reputation.
Fixed and caught by the oldest trick in the book - empty fuel tank. Fuel sending unit malfunctioned I didn't realize. Fuel pressure was good, but flow was not.
Reply With Quote
  #3  
Old 12-09-2013, 04:33 PM
offroadnt's Avatar
offroadnt offroadnt is offline
Junior User
 
Join Date: Feb 2011
Posts: 96
offroadnt is starting off with a positive reputation.
Derned sensor eh? I just got a 2010 F250, it has a bad sender too. I usually reset one of the trip meters at each fuelup and use that as a backup fuel gauge, I know this truck will travel at least 600km on a tank so I'll fuel up anytime before then.
Reply With Quote
  #4  
Old 12-26-2013, 12:31 AM
Mat523 Mat523 is offline
New User
 
Join Date: Dec 2013
Location: SW Chicago burbs
Posts: 23
Mat523 is starting off with a positive reputation.
What...I misread this thread. I thought you needed assistance in a Dr kavorkian kind of way. Just kidding of course. Merry Christmas
Reply With Quote
  #5  
Old 12-26-2013, 07:02 AM
JWA's Avatar
JWA JWA is offline
Post Fiend
 
Join Date: Aug 2010
Location: Reynoldsburg, Ohio
Posts: 6,976
JWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputation
Quote:
Originally Posted by Mat523 View Post
What...I misread this thread. I thought you needed assistance in a Dr kavorkian kind of way. Just kidding of course. Merry Christmas
Well, that's a heckuva Christmas greeting huh?
Reply With Quote
  #6  
Old 12-27-2013, 07:52 PM
Mat523 Mat523 is offline
New User
 
Join Date: Dec 2013
Location: SW Chicago burbs
Posts: 23
Mat523 is starting off with a positive reputation.
My apologizes, I am used to sick humor.....It was just to tempting to resist.
Reply With Quote
  #7  
Old 12-28-2013, 07:48 AM
JWA's Avatar
JWA JWA is offline
Post Fiend
 
Join Date: Aug 2010
Location: Reynoldsburg, Ohio
Posts: 6,976
JWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputation
Quote:
Originally Posted by Mat523 View Post
My apologizes, I am used to sick humor.....It was just to tempting to resist.
I think most of us took it in humor--I did so no worries!
Reply With Quote
Old 12-28-2013, 07:48 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Loses all power and seems fuel starved after 5 min of running?? schlik83 6.0L Power Stroke Diesel 19 05-19-2011 04:43 PM
Truck will not go past 20mph if that haligen 1987 - 1996 F150 & Larger F-Series Trucks 16 08-09-2010 10:20 PM
1989 F350 stalling the_fitter 1987 - 1996 F150 & Larger F-Series Trucks 6 07-02-2009 07:40 PM
rough idle jemini 1987 - 1996 F150 & Larger F-Series Trucks 17 09-30-2007 07:23 AM
88 E350 351W engine problems cr9c1 Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 8 06-07-2007 10:00 PM


Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 03:14 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup