Its now happened 3 times, all after the engine has run for 15 min or more. All the sudden I get a "check engine" with the single beep per sec (not the normal 2 beep per sec of IAC). The boat is a 2005 280 dancer with twin 4.3's. When the beep happens I check all the critical stuff, oil, temp . . . etc. Something also interesting, if I stop the engine all I have to do is turn it back on for the "check engine" and beep to return - the engine does not have to be running. I've been trying to locate a scan tool to find what codes the engine could be throwing out. But my question is what all faults cause the single beep per sec. One thing I did notice was the water pressure was about 25% lower on that engine. So maybe the there is a trigger point if the engine is a cetian temp it requires a certain water pressure - thus I get the beep??? My best guess. But I would like to know all the faults that could cause the single beep per sec or just anyone that has heard a single beep per sec alarm. - Thanks
"check engine" with single beep per second
- Thread starter Voldad
- Start date
- Oct 10, 2006
- 1,716
- Boat Info
- 2006 44 DA
QSC 8.3s
- Engines
- Cummins QSC 8.3s 500HO
Do you keep your boat on a lift or trailer? I had similar issue with mine on lift and then lowered I sometimes lose prime when I lift out to one of the engines and upon starting again next time out have low water pressure. Now when I lower into water and start engines I goose throttles a few times to be sure water pressure gets started.....Haven't had the alarms since.
Thanks - good to know. I think I'm goign down to the boat today to make sure the hoses from the outdrive are all clean. This all started on a day that the lake was "crappy". But - no its not on a lift and its a new impeller. I'm thinking if water pressure will ause the alarm, its blockage someplace.
UPDATE, OK - gave up called the dealer. Ran the code, low water pressure. Seams my (former) mechanic didn't know how to replace an impeller. The gasket blew out. All is well now . .. summer is saved . . . . if it ever stops raining. We in Knoxville have a years rainfall total in June . . . and Spring is our rainy season . . . . at least I'm saving on fuel.
