which engine? 4L or 4.7L?????
the pack shorted,
buy a new pack,
and pray it didnt burn up the PCM.
ALL high voltage coils fail.
Ignition, induction coils.
by dirt, heat, and the fact there is the giant
E fails (electrostat fields)
all three work hard to kill insulation and plastic potted coil packs.
also bad spark plugs can make this happen faster
as the voltage hits 100,000 volts in a misfire.
the heat and time can crack most plastics.
cracks are sure DOOM thing.
the coil can also burn up if the ecu ignitor transistor shorts. causing gross infinite dwell
that burns up all coil packs .
i always check my ignitor for shorts before
putting in any new expensive coil.
if you dont, you risk burning up the new coil in less than 5 mins.
some swap packs and now you have 2 burned
fun to watch that? not.
what i do is crank engine and measure my ignitor pulse. (with no pack there) if good
a new pack works. if no pulses the ignitor is bad.
(where is your ignitor)? INSIDE THE PCM. this year.
swap it out.
why not just read the free FSm, as posted here over 200 times
2000 WJ jeep it is, and the book , see chapter spark.
and error on this page, see instrument cluster and get igntiion
grin, not my error.? grin
chapter 8i -page 10 (8,eye)
4.0L and 4.7L sorry cant guess engines this life.
the 4L has huge 6 pack coil RAIL that?
athe 4.7L has, uses 8 COP got that?
my wild guess, based on tea leaves and dosing rods.
is V8
page 10 covers it
http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service usually the left side goes bad, carbon tracking
most COP i just buy a new cop boot set for small money.
why not youtube 1000 replacing a COP.
you never posted a photo of the melt,
as when i see real damage it talks to me big time.
if the actual coil section melts, bad news
as you can see, it's just 1 screw at id 2.
and one plug at id 3... super simple, to remove
twist CCW, CW, CCW ,say 2 or three time,
the pull out while TWISTING.. to avoid damage.
the put back with dielectric silicon grease on tip
and where body fits tight to head well bore
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