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.

My 5.0 accelerates it self when i turn it on. What is wrong??

Thread Tools
 
Search this Thread
 
Old 01-20-2008, 12:49 AM
  #1  
Lman04
Thread Starter
 
Lman04's Avatar
 
Join Date: Jan 2008
Posts: 2
Default My 5.0 accelerates it self when i turn it on. What is wrong??

Every time i turn on my car for some weird reason the Car accelerates itself when i turn it on. I accelerates it self to 5500rpm and it ill maby accelerate more i just turn it off. It never did that on me untill i pulled out the engine because i was going to do a transmision swap. My car is a 93 5.0 lx and ive been trying to fix it for a week and i have no clue what it is???????????
Lman04 is offline  
Old 01-20-2008, 12:54 AM
  #2  
motorman524
MF Informant
 
motorman524's Avatar
 
Join Date: Sep 2006
Location: Missouri
Posts: 2,690
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

Why'd you pull out your engine to do a tranny swap? Are you sure that your engine is actually revving to that rpm or is it your tachometer saying that when you start your car?
motorman524 is offline  
Old 01-20-2008, 01:27 AM
  #3  
dimebag
6th Gear Member
 
dimebag's Avatar
 
Join Date: May 2006
Location: earleville md
Posts: 10,357
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

some one missed some sensor... or uh... the throttle body
dimebag is offline  
Old 01-20-2008, 05:07 AM
  #4  
PRO50SC
The Rogue Mod
 
PRO50SC's Avatar
 
Join Date: Feb 2006
Location: Maryland Sucka's!!
Posts: 21,918
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

The throttle would have to be wide open for that to happen. Check the linkage.
PRO50SC is offline  
Old 01-20-2008, 11:55 AM
  #5  
86HOGT
5th Gear Member
 
86HOGT's Avatar
 
Join Date: Sep 2003
Location: Phoenix, AZ
Posts: 3,105
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

Agreed, cable or throttle blade
86HOGT is offline  
Old 01-20-2008, 03:26 PM
  #6  
rebel_yell
2nd Gear Member
 
rebel_yell's Avatar
 
Join Date: Aug 2007
Location: Issaquah, WA
Posts: 154
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

i 3rd that statement your throttle linkage or cable is bound up somewhere i had the same problem wiht a honda once
rebel_yell is offline  
Old 01-20-2008, 03:33 PM
  #7  
mjr46
D.R. THE PATHETIC DORK
 
mjr46's Avatar
 
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

you need to check the linkage and see if it's hanging up or binding due to misrouting
mjr46 is offline  
Old 01-20-2008, 04:02 PM
  #8  
militarymustang88gt
2nd Gear Member
 
militarymustang88gt's Avatar
 
Join Date: Dec 2006
Location:
Posts: 221
Default RE: My 5.0 accelerates it self when i turn it on. What is wrong??

or check the tps i know mine did that and it was reading wide open even though it was completely shut. i was reading like 3.8v
militarymustang88gt is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dragonus18
4.6L (1996-2004 Modular) Mustang
8
09-09-2015 01:21 AM
cbird1177711
2005-2014 Mustangs
2
09-03-2015 08:43 PM
5.0 kevo
5.0L (1979-1995) Mustang
6
09-03-2015 06:24 PM
cbird1177711
2005-2014 Mustangs
0
09-02-2015 04:12 PM



Quick Reply: My 5.0 accelerates it self when i turn it on. What is wrong??



All times are GMT -5. The time now is 12:36 AM.