Quote Originally Posted by secondsupra2004 View Post
Well, I’m sitting at the dock after getting towed 4 miles. Ran perfect for 4 days and just died in the middle of the lake. Fuel pump running, injectors seem to be spraying fine and engine turning over fine. No spark at the plugs. Pulled a plug, attached wire, grounded and cranked over but no spark. Hooked up my scanner and no codes showing. Checked all the fuses I could find and main relays. Had a brand new coil in the boat, installed it and still no fire. I’m out of ideas right now. I’m thinking spark control module in the distributor or the ECM. Either way,
Vacation is over. My 89’ Supra never quit on me in 24 years. Really disappointed. Any input would be appreciated.
Got back home, pulled out the manual and started checking the ignition system. Everything pointed to the ICM. Ordered a new one from Inboard Direct ($205.00) and installed it tonight. Boat fired right up. Found the same exact ICM thru Standard Ignition products for $47.00. I ordered one for a spare.
Part number is a LX-384.