The Mustang Source - Ford Mustang Forums

Fox Mustangs 1979-1993 Mustangs Member Tech & Restoration Discussion

Car jerking aftet the eninge heats up

   
Old Apr 26, 2011 | 05:17 PM
Share
  #1  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
Car jerking aftet the eninge heats up
I have a 93 Foxbody that is supercharged and after driving for a while the car starts to jerk when you get on the gas, but at idle it's fine? Anyone know what can be causing this? Thanks
Reply
0
Old Apr 26, 2011 | 05:35 PM
Share
  #2  
HOSS429's Avatar
HOSS429
legacy Tms Member
 
Joined: January 27, 2007
Posts: 4,617
Likes: 176
From: alerbamer
plug wires breaking down ?.. look at your engine running in the dark and see if there is any arching from the wires ..
Reply
0
Old Apr 26, 2011 | 06:45 PM
Share
  #3  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
It's only does it sometimes, usually after driving the car after a while. But I'll check thanks
Reply
0
Old Apr 26, 2011 | 07:55 PM
Share
  #4  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
It will hesitate when you get on the gas and then jerk really bad but the it will work itself out
Reply
0
Old Apr 27, 2011 | 07:54 AM
Share
  #5  
Evil_Capri's Avatar
Evil_Capri
Post *****
 
Joined: February 3, 2004
Posts: 14,160
Likes: 73
Moving to 'Fox Mustang' section, but will leave a link for today . . . .
Reply
0
Old Apr 27, 2011 | 08:38 AM
Share
  #6  
afr347strokerman's Avatar
afr347strokerman
V6 Member
 
Joined: December 9, 2010
Posts: 66
Likes: 0
What size injectors and fuel pump do you have? Is the car tuned?
Reply
0
Old Apr 27, 2011 | 12:55 PM
Share
  #7  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
I'm running 42lb injectors and a 255 walbro pump. And it is tuned
Reply
0
Old Apr 28, 2011 | 12:42 PM
Share
  #8  
afr347strokerman's Avatar
afr347strokerman
V6 Member
 
Joined: December 9, 2010
Posts: 66
Likes: 0
That pump might be on the small side...not saying its the answer but process of elimination...
Reply
0
Old Apr 28, 2011 | 02:03 PM
Share
  #9  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
What would you suggest going with then?
Reply
0
Old Apr 28, 2011 | 03:39 PM
Share
  #10  
afr347strokerman's Avatar
afr347strokerman
V6 Member
 
Joined: December 9, 2010
Posts: 66
Likes: 0
Maybe a hi pressure pump for superchargers...check out aeromotive...pricey but worth it. Pull your plugs and re me what color they are ... black...grey...etc
Reply
0
Old Apr 28, 2011 | 05:57 PM
Share
  #11  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
They are black. Is possible that since I got my tune done I did some other work to the engine and that's throwing it off
Reply
0
Old Apr 28, 2011 | 10:47 PM
Share
  #12  
afr347strokerman's Avatar
afr347strokerman
V6 Member
 
Joined: December 9, 2010
Posts: 66
Likes: 0
Originally Posted by darkhorse93
They are black. Is possible that since I got my tune done I did some other work to the engine and that's throwing it off
Too rich...check your fuel pressure. Who makes your injectors? Mass air might be trippn...how's the idle?
Reply
0
Old Apr 29, 2011 | 04:25 AM
Share
  #13  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
They are ford racing injectors. The idle is fine till it starts acting up.
Reply
0
Old May 15, 2011 | 07:41 AM
Share
  #14  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
So I figured out what it was. It was a combination of the spark plug wires and the fuel filter. I'm pretty sure it might have been the original.
Reply
0
Old May 16, 2011 | 06:24 PM
Share
  #15  
HOSS429's Avatar
HOSS429
legacy Tms Member
 
Joined: January 27, 2007
Posts: 4,617
Likes: 176
From: alerbamer
Originally Posted by HOSS429
plug wires breaking down ?.. look at your engine running in the dark and see if there is any arching from the wires ..
you`re welcome
Reply
0
Old May 16, 2011 | 08:14 PM
Share
  #16  
darkhorse93's Avatar
darkhorse93
Thread Starter
Member
 
Joined: April 25, 2011
Posts: 30
Likes: 0
From: Kansas
And then today I opened up the distributer cap and there's a ton of carbon and all the teeth are worn. Maybe that's it
Reply
0
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Mustang 3.5L Ecoboost engine swap
Ecostang
'10-14 V6 Modifications
1661
Nov 3, 2022 08:50 PM
2014 Mustang GT Engine tick/knock
jc46002003
Repair and Service Help
70
Apr 15, 2016 03:00 PM
Borla S-Type rattle sound
apial
'10-14 V6 Modifications
4
Sep 6, 2015 10:40 AM
These things fell off of my car. Can anybody tell what they are?
f1-cobra
Repair and Service Help
8
Aug 1, 2015 08:02 PM
Adding heated seats
GT227
'10-14 Interior and Audio
0
Jul 13, 2015 11:42 AM
Back to Subforum
Fox Mustangs
View Next Unread
Need help finding B-pillar cap seals for 1990 convertible


Thread Tools
Search this Thread
Search this Thread:

Advanced Search

Advanced Search

All times are GMT -6. The time now is 07:53 AM.