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  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2014 Specific V6 Tech

Misfiring I Need Help

  • Thread starter Thread starter Deathcards
  • Start date Start date Aug 7, 2012

Deathcards

New Member
Aug 7, 2012
5
0
1
Iowa
Aug 7, 2012
#1
  • Aug 7, 2012
  • #1
my 05 stang is wanting to die at an idle. it runs great but idling is a different story. the check engine light has came on and it says its misfiring in 3 cylinders but i cant figure out why. any ideas?
 

echo7

10 Year Member
Mar 30, 2005
706
41
59
FL
Aug 11, 2012
#2
  • Aug 11, 2012
  • #2
How many miles and do you have? New spark plugs yet? I'm about to do mine at 100k miles but I'm not having any issues with them. It runs fine when you get on the throttle though? Just rough at idle?
 

Deathcards

New Member
Aug 7, 2012
5
0
1
Iowa
Aug 12, 2012
#3
  • Aug 12, 2012
  • #3
ive got 95k on her and yeah new plugs. it runs great when i get on the throttle not even tryin to run it hard just a normal curse it runs fine. only when i set still it really rough
 

echo7

10 Year Member
Mar 30, 2005
706
41
59
FL
Aug 12, 2012
#4
  • Aug 12, 2012
  • #4
Well, i can't help you. What RPM is it trying to idle at when it gets rough?
 

Deathcards

New Member
Aug 7, 2012
5
0
1
Iowa
Aug 13, 2012
#5
  • Aug 13, 2012
  • #5
600 rpm she usely idles at 1000....would a bad alternator cause it?
 

echo7

10 Year Member
Mar 30, 2005
706
41
59
FL
Aug 13, 2012
#6
  • Aug 13, 2012
  • #6
Yeah, mine doesn't idle near 600rpm unless it's in drive (auto) and usually like 800-1k in neutral/park. Can't say on the alternator part.
 

Mishimoto

Member
Jun 28, 2010
60
5
19
Aug 14, 2012
#7
  • Aug 14, 2012
  • #7
What cylinders are misfiring? How new are the plugs? Did you change the wires when you changed the plugs?
 

Deathcards

New Member
Aug 7, 2012
5
0
1
Iowa
Aug 21, 2012
#8
  • Aug 21, 2012
  • #8
2 3 and 6 brand new plugs still didnt fix the problem yeah thats about where mine idles but right now when i put it into gear it goes down to like 4 or 500 and then trys to kill it self or is real jumpy
 

GrayPony

Member
May 9, 2006
62
0
7
Aug 23, 2012
#9
  • Aug 23, 2012
  • #9
Did you mix up the plug wires when changing plugs?
 

Deathcards

New Member
Aug 7, 2012
5
0
1
Iowa
Aug 24, 2012
#10
  • Aug 24, 2012
  • #10
nope i did then 1 by 1 to make sure i didnt get them crossed
 
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