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


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-26-2013, 05:18 PM
jkinghorn6.0's Avatar
jkinghorn6.0 jkinghorn6.0 is offline
Senior User
 
Join Date: May 2011
Location: collingswood, N.J.
Posts: 123
jkinghorn6.0 is starting off with a positive reputation.
06 F250 with 5.4 new maf and now no power.

I just replaced my mass air flow sensor due to it being faulty (it would stall sometimes when shifting from drive to reverse) now I have no power after 1/4 throttle. It just seems to fall on its face. Should I disconnect the battery to reset the computer? I am not getting any codes now.
Reply With Quote
  #2  
Old 12-26-2013, 07:52 PM
jkinghorn6.0's Avatar
jkinghorn6.0 jkinghorn6.0 is offline
Senior User
 
Join Date: May 2011
Location: collingswood, N.J.
Posts: 123
jkinghorn6.0 is starting off with a positive reputation.
I am trying to figure out what would cause the loss of power when I throttle up above 1/2 throttle. My fuel pressure runs between 39 and 40 psi at the rails. And at idle maf is around 45 to 50. I'm really unhappy with the 5.4.
Reply With Quote
  #3  
Old 12-27-2013, 10:57 AM
jkinghorn6.0's Avatar
jkinghorn6.0 jkinghorn6.0 is offline
Senior User
 
Join Date: May 2011
Location: collingswood, N.J.
Posts: 123
jkinghorn6.0 is starting off with a positive reputation.
I disconnected the battery to reset the computer then I took it for a drive. Still running the same so I just checked my IAT and it says 212 f I also checked for vacuum leaks and didn't find any in the lines. I'm going to clean the maf and see if I have an intake leak. My computer has not shown any misses and I still don't have any codes but it will stall if I rev the engine to 2500 rpm in park. can someone help please. I am moving in a couple of months from New Jersey to Colorado and I will be towing a trailer and this truck must run well I can't afford any breakdowns on the way.
Reply With Quote
  #4  
Old 12-28-2013, 08:15 AM
jkinghorn6.0's Avatar
jkinghorn6.0 jkinghorn6.0 is offline
Senior User
 
Join Date: May 2011
Location: collingswood, N.J.
Posts: 123
jkinghorn6.0 is starting off with a positive reputation.
Now I have thrown a code. PM 17 and a pending for the other bank. New mass air flow sensor also cleaned it to make sure new air filter and I didn't find any vacuum leaks. Will check again tho. Any suggestions?
Reply With Quote
  #5  
Old 12-28-2013, 08:15 AM
jkinghorn6.0's Avatar
jkinghorn6.0 jkinghorn6.0 is offline
Senior User
 
Join Date: May 2011
Location: collingswood, N.J.
Posts: 123
jkinghorn6.0 is starting off with a positive reputation.
Sorry code p0174
Reply With Quote
Old 12-28-2013, 08:15 AM
 
 
 
Reply

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
4X4 light went off and now will not shift out Dr. Beeker Super Duty & Heavy Duty 5 08-09-2014 12:34 PM
chips litredneck 1999 - 2003 7.3L Power Stroke Diesel 4 07-29-2013 08:12 AM
New guy with a 6.2 TamaTruck 6.2L V8 23 04-26-2013 08:49 PM
new trans, no power mikerans 1987 - 1996 F150 & Larger F-Series Trucks 5 03-19-2013 03:41 PM
Power locks problem John90 1997 - 2003 F150 4 10-16-2012 10:42 PM



All times are GMT -5. The time now is 09:18 AM.


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. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup