coil pack issue
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Old February 4th, 2010, 12:12 PM   #1
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01 mustang gt
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coil pack issue


the problem im having is one of the coil packs in my car are intermitently shorting out, resulting in an obvious rough runing engine because it shuts down a cylinder

the coil packs on it are only a month old so dont think that age is the issue, infact what the issue happens to be is the motor got covered in oil at one point (long story) and since then ive been havin this problem... i actually had 2 that went bad but i found one because it was obvious and didnt work at all, however this second one works sometimes and sometimes doesnt.....aggravating to say the least

my question is this: does any one know of a way i can diagnose which coil pack is shortin out?
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Old February 14th, 2010, 01:56 AM   #2
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Run it hard till your check engine light comes on pointing to the cylinder affected. Checking coil packs with a meter won't tell you crap if the problem is intermittent. I just had the same problem on my '00 GT. Car would run great for about 10 minutes then would miss from idle to 5K rpms. All coils checked good with a meter and had no check engine light on. Ran my car for about 20 minutes which triggered a check engine light pointing to a #4 cylinder misfire. Went to AZ and bought a coil and swapped it in their parking lot, cleared code, and runs like a champ.
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