Intermittent temp/oil pressure warning buzzer

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Captain Andy

New member

• Jan 3, 2022

• #1

We had a warning buzzer begin to sound for 5 seconds every 30 seconds or so. Oil pressure and water temp are fine. My mechanic couldn't find anything wrong, so I had him change the warning horn. It worked terrificly for about an hour, and then started all over again with the new horn. Any ideas?

 

missnancy

Regular Contributor

• Jan 4, 2022

• #2

I would think that if your gauges are saying everything is fine then one of the sensors is going bad.

 

Docksidemarineservices

Silver Medal Contributor

• Jan 4, 2022

• #3

Adding what model engine (IE: Carb, EFI, MPI) and the year may help to get you a more accurate answer....

 

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Captain Andy

New member

• Jan 4, 2022

• #4

missnancy said:

I would think that if your gauges are saying everything is fine then one of the sensors is going bad.

Click to expand...

Thanks very much!

 

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Captain Andy

New member

• Jan 4, 2022

• #5

Good point! The engine is a circa 2010 Crusader 5.7 L 330 HP MPI. It has about 400 hours on it

 

Docksidemarineservices

Silver Medal Contributor

• Jan 4, 2022

• #6

Is it a CES or a non catalyst engine?

 

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Captain Andy

New member

• Jan 5, 2022

• #7

Docksidemarineservices said:

Is it a CES or a non catalyst engine?

Click to expand...

non-catalyst.

 

Docksidemarineservices

Silver Medal Contributor

• Jan 5, 2022

• #8

Non Catalyst... Ok

From the crusader manual....


If the “MIL” lights and/or the alarm sounds during
operation, observe the instrument panel readings for
the possible source of the malfunction, such as low oil
pressure or excessive engine temperature readings.
Other conditions that may sound the warning buzzer are
a transmission over-temperature warning, exhaust gas
over-temperature warning, and for an electronic throttle
malfunction.
IMPORTANT: A failure involving the Electronic Throttle
may result in Idle only operation of the engine.

 

makomark

Silver Medal Contributor

• Jan 6, 2022

• #9

I'd say it is time to get a scan tool and see what the ECU is seeing...