My friend's '92 Civic (1.5L 16-valve non-VTEC) quit while running and won't restart. It's not getting spark. I checked all the measurements of the ICM and coil per the Hayne's manual. All measurements fell smack in the middle of the range except one. Everyone suggests replacing the ICM as this is most likely the problem. The Hayne's manual specifies a resistance of 0.6 - 0.8 ohms for the ICM (middle and offset prongs). Well, my ohmmeter registered 1.0 ohms. I know this falls outside the range, but is it enough to cause the car not to run? Ignition components can usually handle some stress without totally giving out. I mean it DOES have continuity - I would think that the ICM would still be good unless it was incredibly out of range or I got an infinity/open reading. Only 0.2 ohms higher would just result in weak spark and poor performance (right??) I don't know how tight of tolerance the ICM is designed to withstand so would a resistance that's 0.2 ohms too high result in no spark? As always, any help is greatly appreciated.

Thank you,
Trav

 

If you consider that spec to be .7 plus or minus .1 then .3 could be too much. I would text for a signal at the negative coil while someone else cranks, you'll know whether or not the ICM is telling the coil to fire. Did you measure coil resistances?