From: email@example.com (F.H.)
A couple of weeks back I posted a request for Help with an ignition
problem. Out of the blue, my T-Bird just started missing like crazy. One
minute it was running fine, the next it was missing and popping with the
service engine light blinking.
I replaced one coil and that did nothing. Bought another coil and a set
of plugs. Installed the plugs and viola! it ran like a top again.
General consensus was it was the brand of plugs (Bosch Platinum) that
caused the problem. The Bosch plugs had few miles on them and looked
fine. In spite of the fact the replacing them fixed the problem I always
had this funny feeling about the whole thing.
Friday it started missing again. I was stumped. The only thing I could
think of was to open the hood at night and check for a light show. Did
OK, I thought, maybe one cylinder is somehow killing a plug or
something. I loosened the boot around the 5 plugs I could get at easily
and started it up. One at a time, I pulled the plug wires up and away
from the plug until I could hear the spark arcing and notice the miss. I
did this with all 5 of the plugs. Then I shut it off and pushed the
boots back down into place and...... viola! it runs perfect again.
Gotta be some education here. Whats say you experts? Computer
malfunction? Other coil?
===========here's an outside chance this could be it. it's a weird one.
have the 4.6 t-bird. had a miss. did everything you did. didn't go
after pulling my hair out, finally took it to the ford garage. it was
so strange that the tech ran the test twice, then called his buddy over
to verify it. here's what they found.
bad brain box to the #2 cylinder the triggered the fuel injector. since
the engine wasn't getting any fuel, it had a miss, hence - thinking it
cost was 421 dollars, not what i wanted, but they said the program had
to be downloaded from ford onto the chip. has driven great ever since.
hope this helps.
knowledge is power - growing old is mandatory - growing wise is optional
"Many more men die with prostate cancer than of it. Growing old is
invariably fatal. Prostate cancer is only sometimes so."