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  • SN95 4.6L Mustang Tech

misfire only when warm???

  • Thread starter Thread starter DerekStangGT
  • Start date Start date Mar 10, 2009
D

DerekStangGT

My package is in the mail!
Feb 18, 2003
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Mar 10, 2009
#1
  • Mar 10, 2009
  • #1
im getting a bad misfire only when the car is warmed up, and mostly when the car is in low RPMs (under 2k) and slightly under WOT). any experience/suggestions before i start tearing into things??
 
S

SLN043

New Member
Jan 31, 2009
22
0
0
Sacramento, CA
Mar 10, 2009
#2
  • Mar 10, 2009
  • #2
is your check engine light on? how do you know if its really misfiring? can you determine what cylinder(s) its in?
 
D

DerekStangGT

My package is in the mail!
Feb 18, 2003
1,068
0
36
Mar 10, 2009
#3
  • Mar 10, 2009
  • #3
SLN043 said:
is your check engine light on? how do you know if its really misfiring? can you determine what cylinder(s) its in?
Click to expand...

no CEL. i know its misfiring, even at idle. feels like a bad stumble. no, i dont know what cylinder its in
 

Stan Weiss

Member
Dec 8, 2006
347
2
16
Philadelphia, PA
Mar 11, 2009
#4
  • Mar 11, 2009
  • #4
Barrow a coil from a friends car and rotate it from one cylinder to the next until you find the bad coil.
 
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