Help Ignition Coil
09-04-2010, 08:20 AM
#1
Thread Starter
Join Date: Jul 2010
Location: Georgia
Posts: 7
Help Ignition Coil
I have a 99 Gt. So i had a coil go bad. It happens. I changed coil. Well the new coil lasted well about 2 minutes. So i followed the Ford pinout. Determined I had a bad ECM. Got New ECM installed. Still blowing the #5 Coil. Where should i go next. I am thinking the engine harness? Any help would be appreciated.
09-08-2010, 10:11 PM
#2
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
Did you pull the plug to see what it looks like?
Primary side problems that can kill a COP are pretty rare, did the replacement COP include a new boot and "spring"--if not it could be that the boot has developed a HV breakthrough-- that will kill a COP pretty quickly.
Primary side problems that can kill a COP are pretty rare, did the replacement COP include a new boot and "spring"--if not it could be that the boot has developed a HV breakthrough-- that will kill a COP pretty quickly.
09-09-2010, 11:56 AM
#3
have you considered a bad injector? I just finihed woking on a 4.6 that was throwing a misfire on cyl #8. I assumed bad coil so put one from a different cyl on #8 and poblem still there. Had them take it to stealership so they could diognose it better ad turns out the injector was not even working. They wanted $500 to fix it. I did it for $42 and took me 30 min.
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