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I have twin merc 8.1 horizon engines in my 2002 sea ray

Customer Question
I have twin merc...

I have twin merc 8.1 horizon engines in my 2002 sea ray amberjack. my dcm indicates all systems normal. at various intervals varying time in minutes I get a beep, sometimes two in a row. after some hard looking I figured out the dcm indicates strbrd diagnostics. I checked engine oil level,transmission,trans fluid level and also, pulled the strainers. All checked OK. What is my next opton.

Mechanic's Assistant: What's the make/model of your device? How old is it?

Sea Ray 2002 systems monitor display module with single audible reset alarm select.

Mechanic's Assistant: How long has this been going on? What troubleshooting have you tried?

It started on my last trip out. I checked oil pressure & engine temp immediately. no issues. I than checked oil level, trans fluid and sea strainers. No issues. Should the alarm be constant if it is a true issue. At first occurrence i had to figure out what instrument was alarming.

Submitted: 11 months ago.Category: Marine Electronics
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Answered in 1 day by:
9/13/2017
Marine Electronics Expert: Boat Doc, Marine Mechanic replied 11 months ago
Boat Doc
Boat Doc, Marine Mechanic
Category: Marine Electronics
Satisfied Customers: 245
Experience: Expert at Just Answer
Verified

T​he beep normally means the engine control computer has seen a fault and may or may not have set a code. Sometimes it can be quite a bit between the failures so the beeps can be sporadic. Ideally you should have the engines scanned and there should be a code stored that will indicate the failure. In some cases you will not find any codes stored even though the beeps occur. In my experience this is often caused by a failing idle air control so pay close attention to your idle quality as that can be a dead giveaway even without setting a code.

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