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Hello, I am hoping someone can lend some assistance.
Last year I purchased a 2000 150 hp OX66. After servicing it ran flawlessly for 3/4 of the season. One day the engine warning buzzer sounded and the power was cut back to safe mode. Found that the engine mounted oil reservoir was low with plenty of oil in the remote tank. Used the emergency button on the back of the engine to fill the reservoir which worked perfectly. As the season end was approaching this became a daily occurrence. Before I would leave the dock I would remove the cowling and manually, using the e-switch, fill the reservoir.
Before launching this season I wanted to troubleshoot and correct the problem. I believe the problem may be with my ECM but I am entering into unfamiliar territory and need some assistance. I do not want to replace the ECM$$$$$$$ if I don’t have to.
All tests have been conducted with the engine not running. Using my seloc manual and postings from this website I first tested the 3-pos float switch on the engine mounted tank. The switch functions normally. As mentioned the e-switch will force the pump on, quickly filling the reservoir. To me this indicates the pump and wiring to the pump are OK? Next, I tried to manually force the pump on by disconnecting the 3-pos float switch and grounding the blue/green lead of the engine harness. Nothing.
With the 3-pos float switch harness unplugged I noticed that upon keying the ignition from the off to on the ECM first cycles the high pressure fuel pump and then turns on the remote oil pump which then stays on until you either shut the key off or ground the blue/white lead of the engine harness. Is this normal? It does not cycle the oil pump if you repeat the process with the 3-pos harness plugged back in.
Finally I disconnected the ECM harness connector carrying the sensor signals to check for shorts of crossed wires. Everything tested perfectly.
Thoughts?
Last year I purchased a 2000 150 hp OX66. After servicing it ran flawlessly for 3/4 of the season. One day the engine warning buzzer sounded and the power was cut back to safe mode. Found that the engine mounted oil reservoir was low with plenty of oil in the remote tank. Used the emergency button on the back of the engine to fill the reservoir which worked perfectly. As the season end was approaching this became a daily occurrence. Before I would leave the dock I would remove the cowling and manually, using the e-switch, fill the reservoir.
Before launching this season I wanted to troubleshoot and correct the problem. I believe the problem may be with my ECM but I am entering into unfamiliar territory and need some assistance. I do not want to replace the ECM$$$$$$$ if I don’t have to.
All tests have been conducted with the engine not running. Using my seloc manual and postings from this website I first tested the 3-pos float switch on the engine mounted tank. The switch functions normally. As mentioned the e-switch will force the pump on, quickly filling the reservoir. To me this indicates the pump and wiring to the pump are OK? Next, I tried to manually force the pump on by disconnecting the 3-pos float switch and grounding the blue/green lead of the engine harness. Nothing.
With the 3-pos float switch harness unplugged I noticed that upon keying the ignition from the off to on the ECM first cycles the high pressure fuel pump and then turns on the remote oil pump which then stays on until you either shut the key off or ground the blue/white lead of the engine harness. Is this normal? It does not cycle the oil pump if you repeat the process with the 3-pos harness plugged back in.
Finally I disconnected the ECM harness connector carrying the sensor signals to check for shorts of crossed wires. Everything tested perfectly.
Thoughts?
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