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Author Topic:   Engine Diagnostic Alarms on 2004 90-HP Mercury 2-stroke
Whalen posted 01-24-2004 05:27 PM ET (US)   Profile for Whalen  
I have a 2004 MT170 with a 90 two stroke Merc. I have about 25 hours on the engine, and after reading a post elsewhere, I realize that I have never heard a sound from the engine warning system. Is this motor supposed to beep when the key is turned on? My old Johnson 50 is this way. I never heard a beep when the dealer demo'd the boat. I have to admit to feeling a bit sheepish now to ask this. The boat is still under warranty, but there is no way I am going to dig it out of the snow until spring to go to the dealer (85 Mi). I would rather ask here than call the dealer and have him tell me either to bring it in or that this is normal. Thanks!
LabRtvr posted 01-24-2004 06:25 PM ET (US)     Profile for LabRtvr    
There isn't a "preflight" beep on the 90 2s. Only time that I have had a beep is when I was down to about a quart of oil.
Clark Roberts posted 01-25-2004 08:51 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
There is no "beep" on my 2002 Merc 115 4S nor on my brand new 2004 Merc 60 2S and it seems that this "self test" feature has been dropped. A good idea gone! So on installing these engines I grounded the over-temp lead (brown wire on Mercs) coming from the embedded temp sensor to check that installation was correct and that horn worked. Happy Whalin'... Clark... Spruce Creek Navy
stompy27 posted 01-25-2004 10:27 AM ET (US)     Profile for stompy27  Send Email to stompy27     
No beep on my 2002 170 with a 2S. Beep will only come from low oil and high temp. Take care.
Whalen posted 01-25-2004 01:24 PM ET (US)     Profile for Whalen    
Thanks for the replies. A good idea gone indeed! I will preflight the boat with a grounding test periodicaly for peace of mind. Enjoy your whalers, and thanks for the support!
jimh posted 01-26-2004 12:42 AM ET (US)     Profile for jimh  Send Email to jimh     
[Changed TOPIC; was "Where is the beep?"]

I am somewhat surprised that the owner's manual did not provide this information. Sometimes the engine design engineers forget to tell the technical writers when they change something.

If Mercury has goofed up and their owner's manual is misleading on this, an owner of the effected engine ought to contact them and let them know. It could mislead people.

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