Yesterday I started both engines, flipped the engine alarm switch and it went off. I looked at the tach's and both were running. Does anyone know what I should check first?
Thanks for any help.
Louky
Engine alarm sounds when both engines are running
Engine alarm sounds when both engines are running
1987, 32' Marinette Fisherman
Col. Angus
Louisville, KY
Twin Chysler 360's
Col. Angus
Louisville, KY
Twin Chysler 360's
Re: Engine alarm sounds when both engines are running
My first step would be to get a mechanical oil pressure gauge & make sure you have oil pressure on both.
Roger
Roger
"Sea Jay" a 37' Double cabin with twin factory Volvo diesels, 230 HP each. Twin Disk 1.54 Trans turning DynaQuad 19X21 props.
Roger Brown
Petersburg, IL
Roger Brown
Petersburg, IL
- tundrarules
- Aluminum Star
- Posts: 145
- Joined: Fri Jul 11, 2014 11:17 pm
Re: Engine alarm sounds when both engines are running
Look at both oil press sending units for corrosion. Take one wire off at a time to see which swith is bad. Hopefully u don't have a grounded wire..I don't think so since your oil press guage is working. Let us know what u find.
1985 29 Sedan
Edelbrock 1409 carbs
Mallory distributors
Pertronix Flame-Thrower coil & wires
780 hrs/eng
TN River, MM 213.8
Edelbrock 1409 carbs
Mallory distributors
Pertronix Flame-Thrower coil & wires
780 hrs/eng
TN River, MM 213.8
Re: Engine alarm sounds when both engines are running
You need to remove ALL of the alarm connections (Oil pressure and temp switches) on both motors. Then, with both running, put them back on one at a time until the alarm goers off.
Pain in the tush, but that's the best way.
Jeff
PS: All 6 of my temp switches use automotive style quick disconnects to make this task easier. I also separated the two motors alarm system so I can run either one alone (without the low oil pressure alarm on the other setting the alarm off). This required two simple relays and a bit of wiring. If anyone is interested, I can post photos and the schematic.
Pain in the tush, but that's the best way.
Jeff
PS: All 6 of my temp switches use automotive style quick disconnects to make this task easier. I also separated the two motors alarm system so I can run either one alone (without the low oil pressure alarm on the other setting the alarm off). This required two simple relays and a bit of wiring. If anyone is interested, I can post photos and the schematic.
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington
Re: Engine alarm sounds when both engines are running
A friend who seems to know engines helped me troubleshoot it. He disconnected the engine contacts, checked some fuses and grounds. At this point he thinks it's the alarm itself going bad. I've ordered a new one which will be in soon. I'll post the results.
Thanks so much for the replies. Very helpful.
Louky
Thanks so much for the replies. Very helpful.
Louky
1987, 32' Marinette Fisherman
Col. Angus
Louisville, KY
Twin Chysler 360's
Col. Angus
Louisville, KY
Twin Chysler 360's
Re: Engine alarm sounds when both engines are running
Jeff, separating the alarm systems sounds like a good idea and would be great info to have on the forum. Please post the how to if it's not to much trouble.
Thanks!
Louky
Thanks!
Louky
1987, 32' Marinette Fisherman
Col. Angus
Louisville, KY
Twin Chysler 360's
Col. Angus
Louisville, KY
Twin Chysler 360's
Re: Engine alarm sounds when both engines are running
No problem. I use a couple of simple relays I go on eBay (about ten bucks).
Here's the wiring diagram.
Jeff
Here's the wiring diagram.
Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington
Re: Engine alarm sounds when both engines are running
Thanks Fastjeff for posting the diagram. That looks like a good project for the future.
As it turns out, it wasn't the alarm itself. After installing a new one the problem was still there. I disconnected all the leads as suggested and found that it was the alarm sender on the port engine. Super easy to replace and it now works as it should.
Problem solved. Sorry it took so long to get back to this post.
Thanks all
Louky
As it turns out, it wasn't the alarm itself. After installing a new one the problem was still there. I disconnected all the leads as suggested and found that it was the alarm sender on the port engine. Super easy to replace and it now works as it should.
Problem solved. Sorry it took so long to get back to this post.
Thanks all
Louky
1987, 32' Marinette Fisherman
Col. Angus
Louisville, KY
Twin Chysler 360's
Col. Angus
Louisville, KY
Twin Chysler 360's