4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Throttle problems

Thread Tools
 
Search this Thread
 
Old Mar 3, 2010 | 09:55 PM
  #1  
mstngfrk41's Avatar
mstngfrk41
Thread Starter
 
Joined: Mar 2010
Posts: 3
From: Texas
Default Throttle problems

Hi guys im new to the sight and don't know how things really work but i was wondering if anyone could help me out here. i have a "REVING" problem. if i stomp on the gas it takes forever for it to come back down. now i have changed out my throttle body, throttle air sensor, and throttle air control valve. After all that its still lagging on coming down when i punch it anyone have any suggestion?
Old Mar 4, 2010 | 03:22 AM
  #2  
JerseyTrueBlue's Avatar
JerseyTrueBlue
1st Gear Member
 
Joined: Dec 2009
Posts: 70
From: New Jersey
Default

All of our cars have the "hanging rpm" problem. Best way to fix it is to do the IAC mod, do some searches I can't find the link right now sorry man.
Old Mar 4, 2010 | 06:25 AM
  #3  
cliffyk's Avatar
cliffyk
TECH SAVANT
 
Joined: Dec 2006
Posts: 10,937
From: Saint Augustine, FL
Default

Whay you are experiencing is the electronic dashpot function. It's an emissions related use of the IAC to prevent the overly rich mixture that occurs when you "chop" the throttle.

That aside, you should not routinely be "punching" the throttle just to rev the engine up and sound cool--it's not good for the engine, for a variety of reasons...
Old Mar 4, 2010 | 08:18 PM
  #4  
mstngfrk41's Avatar
mstngfrk41
Thread Starter
 
Joined: Mar 2010
Posts: 3
From: Texas
Default

its not a routine thing i did it when i bought it and only do it when i have a buddy looking at it giving there openion about i it know its bad. you must respect your pony or she will not respect you!!!!
Old Mar 4, 2010 | 08:26 PM
  #5  
cliffyk's Avatar
cliffyk
TECH SAVANT
 
Joined: Dec 2006
Posts: 10,937
From: Saint Augustine, FL
Default

Originally Posted by mstngfrk41
its not a routine thing i did it when i bought it and only do it when i have a buddy looking at it giving there openion about i it know its bad. you must respect your pony or she will not respect you!!!!
I know what you mean, my grandson and some of his friends came by a couple weekends or so--we had the hood open on my car and I couldn't resist blipping throttle a couple times...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
TfcCDR
V6 (1994-2004) Mustangs
1
Sep 14, 2015 12:08 PM
tj@steeda
Steeda Autosports
0
Sep 8, 2015 11:50 AM
94stangnewbe
V6 General Discussion
0
Sep 7, 2015 07:39 PM
zanemoseley
2005-2014 Mustangs
6
Sep 6, 2015 12:58 PM
5.0 kevo
5.0L (1979-1995) Mustang
6
Sep 3, 2015 06:24 PM




All times are GMT -5. The time now is 12:22 PM.