Where is the engine alarm located

[Dave-R]

On my sunken 2011 Cobalt restoration, I've bought all new gauges, and switches. I got to thinking about where the engine alarms come from. Any one have an idea? As I understand it the speedometer has a bunch of functions, so maybe it is internal with it. Thanks all. Dave-R

 

[Dave-R]

I found it! And after 8 months under water it still works. Dave-R

 

[HT32BSX115]

On my sunken 2011 Cobalt restoration, I've bought all new gauges, and switches. I got to thinking about where the engine alarms come from. Any one have an idea? As I understand it the speedometer has a bunch of functions, so maybe it is internal with it. Thanks all. Dave-R

Howdy,

In general "Engine Alarms" are systems designed by engine manufacturers. So I guess you could say they come from Mercruiser, Volvo and OMC as it were......

Most of us can be a little more specific though if you reveal exactly what engine (make, model & serial number) is installed your Cobalt.

This link will be helpful too!

Regards,


Rick

 

[Dave-R]

Thanks Rick: The engine is a 2011 Volvo Penta 5.7 GI MPI. The engine alarm was tucked under the dash on the drivers side. I can't believe how many wires are under the dash in this boat. A lot of them just end with pigtails. When we get all the switches, and gauges I will be all day putting it back together.

 

[HT32BSX115]

Thanks Rick: The engine is a 2011 Volvo Penta 5.7 GI MPI. The engine alarm was tucked under the dash on the drivers side. I can't believe how many wires are under the dash in this boat. A lot of them just end with pigtails. When we get all the switches, and gauges I will be all day putting it back together.

Dave, Glad you "found" it. Many boat wiring systems have a LOT of added "stuff" to the standard engine harness...... If you're going to do a lot of stuff to your boat, it might be a good idea to get an OEM VP manual.........

"Alarm" can mean many things. With a carbureted Mercruiser, the "alarm" is just a simple single buzzer connected to 12v that certain switches (oil, temp, drive lube level etc) connect to ground when one or more of them closes (or any of the wires get shorted to ground) It can be very frustrating.

Don't know about the MPI Volvos. We also have a Volvo Forum if you have any other specific VP questions. There's a few people that hang out over there that are quite knowledgeable.

http://forums.iboats.com/forum/engi...volvo-penta-i-o-inboard-gas-engines-outdrives

Cheers,


Rick

 

[Dave-R]

I worry about all the sensors I will need to replace. I have a new ECM comming, and I also bought the Rinda diacom software, and plug to help me set timming, and find all the gremlins that are waiting to be found. I was so tempted to buy a new manifold and Carb. I never had any trouble with the old marine systems. Maybe it's the old dog and new tricks theory. On just the engine wiring harness, there are about 30 pigtails. will keep you posted of my hopeful progress. Dave-R

 

[HT32BSX115]

I found it! And after 8 months under water it still works. Dave-R

Dave,

I somehow missed that little tidbit!!! This boat was submerged for 8 MONTHS? fresh or salt? fresh I presume......

That, of course, would clearly mean many things for restoration! The main "sensors" temp, oil pressure etc might be unaffected since they're pretty well sealed. But having said that, they're also "cheap". Most of us would replace them. But the EFI sensors, do a LOT of background things. I would probably replace them all just to prevent strange problems in the future.

Also, the main engine harness and the boat harness would possibly have eventual corrosion issues with most of the crimped connections and water intrusion in the actual wiring would be likely, possibly resulting in corrosion later as the water slowly migrated out into new crimped connections. I would think replacing the entire engine and boat wiring would be in order too. (and maybe you have already done that) Don't forget the steering cable. it might be ok now but it will likely corrode slowly and make steering movement more and more restricted as the cable gets worse.....