hello everyone, long time lurker, first time poster. I finally decided to create an account because I am stumped.
Preface: Been boating with friends and family for 10 years or so. bought myself a 2005 Ebbtide 2100 Funcruiser single console earlier this year with a Volvo Penta 5.0 mpi.
Problem: About a month ago, my brother bought a 2002 Tahoe 202 with the Mercruiser 5.0 mpi and Alpha One outdrive. We test drove in the local lake and everything ran great. Took it out for a week to Havasu, and on the second to last day, the engine cut off and refused to start. We got it out of the water and took it home.
Fast forward to last week. Finally got around to troubleshooting. Here is what I see:
-turn the key, no initial 2 beeps, no fuel pump priming. wait about 6 seconds, and the fuel pump kicks on with a constant alarm. You can hear both the alarm and the fuel pump cut in and out for a split second at times but both continue in a synchronized fashion. When the alarm sounds, the pump runs. When the alarm turns off, the pump turns off.
-engine refuses to turn over(run) until the alarm sounds and the pump runs. Once it does run, its rough and dies instantly unless throttle is given.
-Oil pressure is good at the dash gauge.
-swapped the 2 relays and the problem persists.
-My brother threw a new IAC and MAP sensor for the heck of it and no change
- drive lube is full and wiggled around the floater and no change - I can't physically see the floater with the fluid to the fill line.
Any ideas here? Any help would be much appreciated
Serial number: M346419
ECM 555
Preface: Been boating with friends and family for 10 years or so. bought myself a 2005 Ebbtide 2100 Funcruiser single console earlier this year with a Volvo Penta 5.0 mpi.
Problem: About a month ago, my brother bought a 2002 Tahoe 202 with the Mercruiser 5.0 mpi and Alpha One outdrive. We test drove in the local lake and everything ran great. Took it out for a week to Havasu, and on the second to last day, the engine cut off and refused to start. We got it out of the water and took it home.
Fast forward to last week. Finally got around to troubleshooting. Here is what I see:
-turn the key, no initial 2 beeps, no fuel pump priming. wait about 6 seconds, and the fuel pump kicks on with a constant alarm. You can hear both the alarm and the fuel pump cut in and out for a split second at times but both continue in a synchronized fashion. When the alarm sounds, the pump runs. When the alarm turns off, the pump turns off.
-engine refuses to turn over(run) until the alarm sounds and the pump runs. Once it does run, its rough and dies instantly unless throttle is given.
-Oil pressure is good at the dash gauge.
-swapped the 2 relays and the problem persists.
-My brother threw a new IAC and MAP sensor for the heck of it and no change
- drive lube is full and wiggled around the floater and no change - I can't physically see the floater with the fluid to the fill line.
Any ideas here? Any help would be much appreciated
Serial number: M346419
ECM 555