Mike Boyd
New Member
- Jul 12, 2023
- 6
- Boat Info
- 200 Select 5.0 MPI Mercruiser, Bravo 3
- Engines
- 5.0 Mercruiser MPI w/Bravo 3
Hello. Hoping someone on here with a little more experience than myself can help me. A friend just gave me a 2006 Sea Ray Select 200 with the 5.0L Mercruiser MPI and Bravo 3 package. I got the boat knowing that it was having mechanical issues.
The boat starts no problem. After the engine has run for a couple of minutes at idle the tach will drop down to 0 and the engine will cut out and die. The alarm will sound and the engine lost engine com message will announce on the tach. The engine will restart again with no problems until it again cuts out and dies with the same associated alarm and message.
If I bump the RPMs up to around 2000 in an attempt to keep the engine running, the tach will still abruptly bounce to 0, the engine cuts out for about a second and will return to life. While the tach is at 0 the alarm sounds. It will continue to cut out like this about every 5 seconds. The engine com message will show every time it does this.
At one point I ran the engine for around 5 mins letting it cut out but it continued to run due to the increased engine RPMs. It then posted a sensor fault message and right after a TPS fault message. Both of those messages continued to repeat until I shut the engine off.
I definitely feel this cutting out is electronically caused but I don’t possess the diagnostic testing equipment to confirm this. Would the throttle position sensor cause symptoms like this or would whatever is causing of the sudden and abrupt loss of rpm cause the the TPS to register a fault?
Any insight would be greatly appreciated. I’m hoping it’s something… well… not as expensive as a ECU. Fingers crossed.
The boat starts no problem. After the engine has run for a couple of minutes at idle the tach will drop down to 0 and the engine will cut out and die. The alarm will sound and the engine lost engine com message will announce on the tach. The engine will restart again with no problems until it again cuts out and dies with the same associated alarm and message.
If I bump the RPMs up to around 2000 in an attempt to keep the engine running, the tach will still abruptly bounce to 0, the engine cuts out for about a second and will return to life. While the tach is at 0 the alarm sounds. It will continue to cut out like this about every 5 seconds. The engine com message will show every time it does this.
At one point I ran the engine for around 5 mins letting it cut out but it continued to run due to the increased engine RPMs. It then posted a sensor fault message and right after a TPS fault message. Both of those messages continued to repeat until I shut the engine off.
I definitely feel this cutting out is electronically caused but I don’t possess the diagnostic testing equipment to confirm this. Would the throttle position sensor cause symptoms like this or would whatever is causing of the sudden and abrupt loss of rpm cause the the TPS to register a fault?
Any insight would be greatly appreciated. I’m hoping it’s something… well… not as expensive as a ECU. Fingers crossed.