mxracer342
Cadet
- Joined
- Jul 14, 2014
- Messages
- 9
Man thank you for letting me know. My biggest concern was that I'd buy part after part and end up spending money I didn't have to. Can they test a coil at Oreilly's?I found the solution on my boat. The ignition coil was the imposter. It kept shorting and overloading the ICM when the coil warmed up. Must of been the coils expanding and touching each other due to faulty insulation in the Factory coil. After changing it on the boat never died on me since i took it out this sunday and i punched it pretty hard on plane too for way more than 30 minutes at high rpm. Go down to your local oreily/kragen and grab an ignition coil from them with a lifetime warranty included. Just tell them to match it up with a S10 chevy blazer 4.3 (same exact engine that is in your boat and make sure it's a borg warner coil which is the same exact coil as napas echelin). That should give you your fix. If not then another imposter would be a faulty circuit breaker acting like an inductor (talked to a guy with a mercruiser same exact engine). But for your case. I'd say it's just a bad coil (i'm never buying factory GM parts ever again) For me it was definitely a bad ignition coil backfeeding into the ICM ultimately frying it. Oh and lastly if you are mounting a new ICM. Make sure you put lots of thermal paste on it (not dielectric grease) The thermal paste will give the module far better heat transfer and ultimately keep it a bit cooler when operating.