F150 Hesitation on Acceleration - Ford Truck Enthusiasts Forums



2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 engine

F150 Hesitation on Acceleration

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 05-14-2004, 07:59 AM
brooknbrown brooknbrown is offline
New User
Thread Starter
 
Join Date: Mar 2004
Posts: 20
brooknbrown is starting off with a positive reputation.
F150 Hesitation on Acceleration

i recently purchased a f150 fx4 5.4L w/ 18" rims and lt275/65rx18 owl all-terain wheels. at about 1000 miles i have noticed that when i start my acceleration, there seems to be a slight delay or hesitation. i can't seem to determine if it is coming from the engine or the rear or the tires. any thoughts?
Reply With Quote
  #2  
Old 05-14-2004, 08:21 AM
Slade901's Avatar
Slade901 Slade901 is offline
Senior User
 
Join Date: Dec 2003
Location: Memphis, TN USA
Posts: 354
Slade901 is starting off with a positive reputation.
I think this post is in the wrong section. The'll move this later on.

Anyway, what year is this vehicle? carburetor? tbi (Throttle body injector)? fi (fuel injector)?

I've encountered this problem before and here's what my recomendation.

Three things I want you to check.

1. Take out your IAC (Idle Air Control solenoid) which is located on the throttle body. Clean it with a throttle body cleaner and a brush. Clean the spot where the IAC goes in to the throttle body.
If that does not work you may have to replace the IAC $29.

2. The TPS (Throttle Position Sensor) also causes problem which is located below the IAC. The TPS at IDLE provides voltage value to the computer and that's what how computer determine the position of the throttle plate. If there is a dead spot on the TPS providing incorrect voltage then it will throw the computer a little bit. The TPS can't be cleaned and you just have to replace it $19.

3. The MAF (Mass Air Flow sensor usually located right after the air filter box) or ACT (Air Charge Temperature sensor usually located on the side of the air filter box). Try cleaning them with some throttle body cleaner and let it dry.

Check the connectors as well of all sensors.
Reply With Quote
  #3  
Old 05-14-2004, 09:21 AM
bigjack's Avatar
bigjack bigjack is offline
Elder User
 
Join Date: Jan 2004
Location: N Ga. Mountains
Posts: 626
bigjack is starting off with a positive reputation.
Quote:
Originally Posted by brooknbrown
i recently purchased a f150 fx4 5.4L w/ 18" rims and lt275/65rx18 owl all-terain wheels. at about 1000 miles i have noticed that when i start my acceleration, there seems to be a slight delay or hesitation. i can't seem to determine if it is coming from the engine or the rear or the tires. any thoughts?
I assume it's an 04. The 04's are "drive by wire". There is no throttle cable, There is a sensor at the pedal that tells a motor at the throttle body how much gas you are giving it by the position of the pedal. Some people have noticed a hesitation when first stepping on the gas, some worse than others. I have an 04 but I don't notice any hesitation. Do a search for "hesitation" or "throttle" on the 04 F150 forum, this subject has been exhaustively discussed there.
Reply With Quote
  #4  
Old 05-14-2004, 10:00 AM
MustangGT221's Avatar
MustangGT221 MustangGT221 is offline
Post Fiend
 
Join Date: Nov 2001
Location: Topsfield, MA
Posts: 14,945
MustangGT221 has a good reputation on FTE.MustangGT221 has a good reputation on FTE.MustangGT221 has a good reputation on FTE.
Moved to 04 forum
Reply With Quote
  #5  
Old 05-22-2004, 01:09 AM
jimmybl jimmybl is offline
Junior User
 
Join Date: Apr 2004
Location: New Kensington, PA
Posts: 87
jimmybl is starting off with a positive reputation.
Brooknbrown, take it to your dealer and have the throttle reprogramed, there are other posts about this and a simple updated reprogramming fixed this problem in each case.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2007 F150 hesitation Adam0181 2004 - 2008 F150 1 08-13-2016 12:09 PM
2000 Ford F150 4.2l hesitation when tank not full ocomas16 1997 - 2003 F150 2 03-16-2016 06:26 PM
1989 F150 six cylinder hesitates on acceleration dieterschmied 1987 - 1996 F150 & Larger F-Series Trucks 1 04-19-2011 09:15 AM
2005 5.4 hesitation on acceleration BARRY HAMPTON 2004 - 2008 F150 5 04-15-2011 08:57 PM
Hesitation after engine warms up chillybone Modular V8 (4.6L, 5.4L) 4 02-20-2004 02:44 AM


Go Back   Ford Truck Enthusiasts Forums >

Tags
150, 1982, 1995, 2006, 2007, 49, 54, 58l, accel, acceleration, accelleration, exeleration, f150, ford, hesitation

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 11:40 AM.


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.