Warning beep

[MyMalibue]

Good evening

Tks in advance for your reply….

I get a warning beep only when going over 30 MPH.  I dont get the warning beep when running neutral and 3000 RPM.  

Also, I did change the Crank, Cam, Knock sensors.  Unplug oil sensor… still get the warning beep!

any idea what could be the problem?

boat model: 2004 Malibue  LSV 25, 8.1 L

thank you

Edited July 16, 2021 by MyMalibue
Correctios

[bwhitfield85]

I have the same issue with me 2002 and can’t figure it out. I may find the beeper and poke it with a screwdriver to make it stop. It’s annoying for sure. 

[csleaver]

Using something like Rinda Diacom or Codemate to help diagnose the problem may be more helpful than replacing random sensors or poking things with a screwdriver.

[formulaben]

BEEP CODES — the 4 maintenance items that can trigger the beeper are:

•  High engine water temperature (NOT dash sensor, and >203*)
•  Low oil pressure (NOT dash sensor, and <6 PSI)
•  High transmission temperature (>140?*)
•  A diagnostics trouble code

The last one can be many things, but the beep pattern may help diagnose it.

[MyMalibue]

Thank you for the reply.

I am using the Rinda DIACOM and the warning beep I get does not generate a fault Code. 

Apparently, there is a description of warning Beep in Malibue user manual.

[MyMalibue]

FInally, it was the Knock sensor......loose connector.

After changing 2 sensors with no result, I tried to unplug-plug back in the knock sensor and realised it was not connect properly (rusted)

Reconnected properly and back to normal.