5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

full throttle hesitation

Old 08-01-2008, 07:44 PM
  #1  
LOUDexhaust
3rd Gear Member
Thread Starter
 
LOUDexhaust's Avatar
 
Join Date: May 2006
Location: SC Upstate
Posts: 695
Default full throttle hesitation

I did the mods in my sig a few weeks ago and my car just started hesitating at full throttle. It's not very noticeable but what it's doing is cutting out ever so slightly repeatedly. I thought it may be my fuel injectors not being able to keep up but this just started happening so I'm not sure. any ideas?
LOUDexhaust is offline  
Old 08-01-2008, 09:19 PM
  #2  
LOUDexhaust
3rd Gear Member
Thread Starter
 
LOUDexhaust's Avatar
 
Join Date: May 2006
Location: SC Upstate
Posts: 695
Default RE: full throttle hesitation

i see my sig isn't showing so i'll tell ya what i got. GT40p's, explorer intake and TB, tfs stage 1 cam.
LOUDexhaust is offline  
Old 08-01-2008, 09:41 PM
  #3  
ctgreddy
6th Gear Member
 
ctgreddy's Avatar
 
Join Date: May 2007
Location: Dearborn, MI
Posts: 6,277
Default RE: full throttle hesitation

did you change the fuel pump? maybe its starting to die. throw a fuel pressure gauge on it if you can.
ctgreddy is offline  
Old 08-01-2008, 10:00 PM
  #4  
LOUDexhaust
3rd Gear Member
Thread Starter
 
LOUDexhaust's Avatar
 
Join Date: May 2006
Location: SC Upstate
Posts: 695
Default RE: full throttle hesitation

My pump is kinda loud, I suppose I might just change it out anyway. I will throw on a pressure gauge, what should it be at during idle?
LOUDexhaust is offline  
Old 08-01-2008, 11:09 PM
  #5  
mjr46
D.R. THE PATHETIC DORK
 
mjr46's Avatar
 
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
Default RE: full throttle hesitation

how are the tune up parts??
mjr46 is offline  
Old 08-02-2008, 12:38 AM
  #6  
immr.mustang
2nd Gear Member
 
immr.mustang's Avatar
 
Join Date: Feb 2007
Location:
Posts: 186
Default RE: full throttle hesitation

sounds like you may be running it lean. better be carefull.
immr.mustang is offline  
Old 08-06-2008, 09:59 PM
  #7  
LOUDexhaust
3rd Gear Member
Thread Starter
 
LOUDexhaust's Avatar
 
Join Date: May 2006
Location: SC Upstate
Posts: 695
Default RE: full throttle hesitation

I think I had some bad gas. Threw in some octane booster and voila.
LOUDexhaust is offline  
Old 08-06-2008, 10:51 PM
  #8  
TRexGAWD
4th Gear Member
 
TRexGAWD's Avatar
 
Join Date: Feb 2008
Location: Georgia
Posts: 1,761
Default RE: full throttle hesitation

What's your timimg set at?
TRexGAWD is offline  
Old 08-08-2008, 08:06 PM
  #9  
LOUDexhaust
3rd Gear Member
Thread Starter
 
LOUDexhaust's Avatar
 
Join Date: May 2006
Location: SC Upstate
Posts: 695
Default RE: full throttle hesitation

10 degrees base. I got down past quarter tank today and it started lurching past 2500rpm. topped off the tank and it seemed to get better by the time i got home. hopefully it's just bad gas.
LOUDexhaust is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Thunderball
4.6L (1996-2004 Modular) Mustang
15
11-22-2015 11:49 PM
TCStangerv6
Street/Strip
12
10-11-2015 05:57 PM
UrS4
S197 Handling Section
10
10-03-2015 06:23 AM
uedlose
The Racers Bench
4
10-01-2015 08:31 PM
junior04
4.6L (1996-2004 Modular) Mustang
1
09-28-2015 10:53 AM


Thread Tools
Search this Thread
Quick Reply: full throttle hesitation



All times are GMT -5. The time now is 09:16 AM.