Quote Originally Posted by JerseyPEPE View Post
Knock sensor is fine... I pulled the ECM and tested all the pins looking for a short. I found 2 shorts using a multi-meter doing a simple continuity test. I'm hoping the new marina can repair that. I spoke to the folks at Whipple Super Chargers ... they do ECM repair and reprogramming... the MEFI-4 is sealed and therefore can not be repaired.
Does anyone have experience replacing the entire wiring harness, ECM and getting full fresh start.
I just want to use the boat!
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.