Originally Posted by jr's3800
If the ICM is starting to fail in a bad way you may see the tach drop off for a split second at a time, almost as the car has stalled for a split second and them come back to life... Other times you may get an intermintent nasty stumble.... A not so happy coil can also cause a very nasty stumble...
Would you happen to have another ICM with coils still attached handy as a test?
I just checked ou the coils after the car has been running for 1/2 hour.
coil 1 (6,3) - 5,983 ohms
coil 2 (2,5) - 5,995 ohms
coil 3 (4,1) - 5,910 ohms
So the bottom is off by tad compared to the other 2. not sure if this is a big enough difference though
will that actron CP9110 or whatever scan this car with the right adapter cable and give me the information I need?