How did you check the ignition module? The only sure test is with a "known
module. Loss of IDM and PIP is usually a good sign of module or dist. pickup
With the problems with the Ford TFI module, thats probably the culprit.
Lots of folk here dont know how to do a voltage drop test. I know how to do it
correctly, you know how to do it correctly, but they may not. And it's not
accurate, especially on the IDM circuit in the module. I try to offer a down
dirty way for approxomate diagnosis, unless it will harm the vehicle or the
The easiest way, in this case, is to connect a "known good" module, given the
failure rate of TFI modules on these vehicles.
Do yourself a favor and drop prick one into the killfile right alongside
hurc.ast. I'd guess both worked for a Ford dealership but neither really
knows what the fuck they are doing. Years ago I tested an ignition module on
the SBDS with "pass" results. After an hour of testing the different
circuits and not finding anything wrong I slapped on a test module.... guess
what... the vehicle started right up. Before the SBDS came out a test module
was the first step in my "no spark" diagnostic procedure. His voltage drop
test is pretty much worthless, along with his advice that a restricted
exhaust can't cause overheating.
I took both the coil and icm to parts store for testing.The only way to
check with known good part,is to spend $80.00 and buy one and possibly get
stuck with something i may not need.With a PIP code ya think I may be
looking at bad pickup coil? When this happened the car jerked a couple of
times and just shutdown.BTW I appreciate all the input!thanks
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