2dogsbarking
New member
"I started having an issue wit
"I started having an issue with my port engine. It starts up fine, runs fine for almost 4 minutes on the dot, then shuts itself down. I called the local marina repair shop to come out and run the Volvo diag tool. They came out all right, didn't run the tool, but told me I needed a tuneup in both engines, which they would do for me at $600 plus, and I would be delighted with the results. I declined, performed the tune up myself with my nephew who's a pretty good mechanic, and still have the same issue. We have swapped the following with the good performing engine to troubleshoot the problem; TP, temperature, MAP sensors, and the actual ECM unit. Also swapped out the fuel sensor relays. Still shuts down at 4 minutes. When it first happened I was on my out of the Marina. Once out, I fired the engine and it ran fine under load between 3200 and 3800 rpm and ran at idle forward just fine after about a 1/2 hour run, but after cooling down shut down again at start up after 4minutes. I spoke with another mechanic (unfortunately he can't do the diags on my boat for another week), and he suggested either the high or low pressure fuel pump. Has anyone had this specific problem and what was the cure, or anyone have any suggestions.
Thank you."
"I started having an issue with my port engine. It starts up fine, runs fine for almost 4 minutes on the dot, then shuts itself down. I called the local marina repair shop to come out and run the Volvo diag tool. They came out all right, didn't run the tool, but told me I needed a tuneup in both engines, which they would do for me at $600 plus, and I would be delighted with the results. I declined, performed the tune up myself with my nephew who's a pretty good mechanic, and still have the same issue. We have swapped the following with the good performing engine to troubleshoot the problem; TP, temperature, MAP sensors, and the actual ECM unit. Also swapped out the fuel sensor relays. Still shuts down at 4 minutes. When it first happened I was on my out of the Marina. Once out, I fired the engine and it ran fine under load between 3200 and 3800 rpm and ran at idle forward just fine after about a 1/2 hour run, but after cooling down shut down again at start up after 4minutes. I spoke with another mechanic (unfortunately he can't do the diags on my boat for another week), and he suggested either the high or low pressure fuel pump. Has anyone had this specific problem and what was the cure, or anyone have any suggestions.
Thank you."