390Express
Regular Contributor
I have a 1996 Trojan Express. The port motor runs fine, the starboard motor ran fine, until it developed the following issue at the end of last year:
Turn key to ready, fuel pump kicks on, start the motor, motor starts, runs fine, then shuts off in about 10-15 seconds. Starts back up immediately, but always shuts back off. Last year the timing was jumping around, and I knew the distributor was on its way out. Boat has a new distributor, new coil, and has fuel pressure and injectors fire as its stalling.
The wires at the helm have been eliminated from the potential problem source, via swapping the wiring harness at the helm. Tried swapping ECU's, no difference.
Any other ideas as to what it could be, in terms of a sensor or wire stopping ignition from the ECU? I removed and cleaned all ground cables. I haven't been inside the main fuse panel to clean those connections or to mess with the relay. That said, I don't think that's the source of the problem, as the fuel pump and TBI continue to fire as the motor is shutting down.
Turn key to ready, fuel pump kicks on, start the motor, motor starts, runs fine, then shuts off in about 10-15 seconds. Starts back up immediately, but always shuts back off. Last year the timing was jumping around, and I knew the distributor was on its way out. Boat has a new distributor, new coil, and has fuel pressure and injectors fire as its stalling.
The wires at the helm have been eliminated from the potential problem source, via swapping the wiring harness at the helm. Tried swapping ECU's, no difference.
Any other ideas as to what it could be, in terms of a sensor or wire stopping ignition from the ECU? I removed and cleaned all ground cables. I haven't been inside the main fuse panel to clean those connections or to mess with the relay. That said, I don't think that's the source of the problem, as the fuel pump and TBI continue to fire as the motor is shutting down.