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2003 Volvo Penta 5.7L Gi-A...long block replaced in 2017.........was running great...up on plane......slowly started losing RPMs (over 4 minutes) went from 3,400 rpm down to 700 rpm then died.....will not restart. Tested all ignition components....tested good....replaced anyway. 12.6v feeding...
So I have a 2003 VP 5.7L Gi-A. The engine starts and runs fine while cruising. But after slowing and trolling for about an hour the idle will start getting rough like it is "loading up", then all on it's own the engine rpm will rise to 2,000 - 2,500 rpms for about 5 seconds, then idle back...
OK, so hear it goes.
What it is.........
2002 Volvo Penta 5.7 Gi-A, ser# 4012059922 VP# 3869117, Closed Cooling system.
What it's doing....
Overheating AFTER coming off plane. Can run for hours at 3200 rpm...........slow down and within 30 to 40 seconds temp rises and alarm sounds...
