2003 Mustang GT (misfire in motor)

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10-26-2009, 10:01 PM

cgraeser7

Thread Starter

Join Date: Oct 2009

Location: missouri

Posts: 2

2003 Mustang GT (misfire in motor)

hey can anyone out there tell me why my car misfires? changed plugs and coils are fine. what do i do please help me !!!!

10-26-2009, 10:04 PM

hpwrestler220

6th Gear Member

Join Date: Oct 2006

Location: NJ

Posts: 6,817

is your CEL on??

how do you know that your coils are fine?

10-26-2009, 11:24 PM

1999mustang2000

5th Gear Member

Join Date: Jan 2008

Location: HENDO,KY

Posts: 2,583

i ended up replacing the whole wiring harness before i finally fixed my misfire

10-27-2009, 09:34 AM

sainthk

2nd Gear Member

Join Date: Apr 2007

Location: Houston, Texas

Posts: 297

Quote:

Originally Posted by 1999mustang2000

i ended up replacing the whole wiring harness before i finally fixed my misfire

what did the whole harness cost?

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