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200 EFI Mercury 2000 (Alarm sounds then loses Power-or Return Idle-Stalls)
I've been trouble shooting this for the last couple months so please review what I replaced-inspected to this point in time.
Symptom: When the boat-engine is been sitting for a couple of days and I take it out on the water it runs like a "Champ" it is good and strong.
After about 20 -30 minutes or so, an Alarm comes on and she loses power and returns to idle and alarm shuts off. If I go to "Throttle up" again she gets up on plane (2000 Rpm) the "Alarm sounds" and she loses power return to idle or stalls. But the engine starts back up every time. I can get back to port in Limp mode (1100 rpm).
I have changed the Impeller, Thermostats, Poppet valve is completely rebuilt; Tell Tale water discharge and pressure gauge (25psi) is good. Fuel-Water filter replaced. Oil pump gears has been visually inspected, (Float Replaced) in cowl reservoir. All appears functional.
I found and replaced a bad Voltage rectifier (Top half) unit was bad. This might of induced this problem to begin with.
For testing purposes I pulled port side temperature sensor and I noticed it does shut down engine when disconnected. I have replacement temperature (Overheat sensor) in hand and I will replace today.
If this does not work, does anybody have any suggestions in what to change out next: It is going to get expensive from here so I need to be precise.
1. Alarm Control Module $278.00
2. Control Module Ignition $267.00
Please advise and Thank you in advance...
CJ
Symptom: When the boat-engine is been sitting for a couple of days and I take it out on the water it runs like a "Champ" it is good and strong.
After about 20 -30 minutes or so, an Alarm comes on and she loses power and returns to idle and alarm shuts off. If I go to "Throttle up" again she gets up on plane (2000 Rpm) the "Alarm sounds" and she loses power return to idle or stalls. But the engine starts back up every time. I can get back to port in Limp mode (1100 rpm).
I have changed the Impeller, Thermostats, Poppet valve is completely rebuilt; Tell Tale water discharge and pressure gauge (25psi) is good. Fuel-Water filter replaced. Oil pump gears has been visually inspected, (Float Replaced) in cowl reservoir. All appears functional.
I found and replaced a bad Voltage rectifier (Top half) unit was bad. This might of induced this problem to begin with.
For testing purposes I pulled port side temperature sensor and I noticed it does shut down engine when disconnected. I have replacement temperature (Overheat sensor) in hand and I will replace today.
If this does not work, does anybody have any suggestions in what to change out next: It is going to get expensive from here so I need to be precise.
1. Alarm Control Module $278.00
2. Control Module Ignition $267.00
Please advise and Thank you in advance...
CJ
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