Ignition Coil Question

[90lxwhite]

Hey fellas whats going on? I have a couple 302 mustangs but the wife has an 09 expedition and the coils keep going bad. They've all been changed about a yr ago and now the new ones are starting to go out. Anyone know what causes premature coil failure?

 

[90lxwhite]

Not much action on these boards

 

[90lxwhite]

 

[MidnightBlk98GT]

When was the last time the plugs/wires were replaced? How are the connectors looking? Any arcing or "dark marks"on the connectiors? Is the computer throwing a code? Any diagnostics performed? Engine hesitation/misfiring? These are just some of the questions I can immediatly think of (I keep adding more the longer I leave this post open).

Hope that this "sparks" others to comment on this board. (Sorry but I had to do it.)

 

[90lxwhite]

The codes that come up are always cop related. Cel light is on now but haven't ran the code this time yet to see which coil it is. I have a miss when accelerating on the hwy w light throttle and I have to take it out of OD to get it to smoothe out. It's a pretty violent shake. It does it whether cel is on or not. The front plugs are new but I need to change the rear still. But the last time I had to replace a new coil was one that was on a new plug

 

[jcgafford]

i read on one of the explorer forums about those coils. something about the springs in the wiring arcing and frying stuff. it was a while ago so i don't recall most of it. sounds like a tune up is needed and codes cleared before delving any deeper here.

 

[jcgafford]

yup it was the screw down type wiresets that have a spring resting ontop of the spark plugs. guess it has given enough people a problem to have some trouble shooting threads about it.

 

[90lxwhite]

I hate em. Also the factory plugs are a 2 piece and notorious for breaking when changing plugs. A-holes should've recalled em

 

[jcgafford]

Yup. my wifes exploder has them and they were a pain to do a tune up with.

 

[MidnightBlk98GT]

Just performed a little search and WOW, what at PITA!! Can't believe that Ford issued a TSB for 2-piece plug removal! I don't have any 3 valve engines in the stable but I'm just amazed at some of the problems that have been identified. I'm in total agreement with 90lxwhite; they should have recalled them.