Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-10-2020, 03:46 PM   #1
Senior Member
 
City: Rocky Point
Country: United States
Vessel Name: Livin The Dream
Vessel Model: Sea Ray
Join Date: Nov 2017
Posts: 137
Temp Gauge Issues

I have twin diesels on my boat and neither engine has a correctly functioning temp gauge. Port engine spikes when I turn on other accessories and especially my navigation lights. Temp is inaccurate before anything is turned on anyway. My starboard gauge gets pinned at 250 degrees until I tap it. Obviously I have an electrical issue but where do I start?
__________________
Advertisement

larman is offline   Reply With Quote
Old 08-10-2020, 04:05 PM   #2
Bud
Senior Member
 
Bud's Avatar
 
City: KEY COLONY BEACH
Country: United States
Vessel Name: Izzy Rose
Vessel Model: Grand Banks 49
Join Date: Aug 2017
Posts: 236
I had a similar problem. Power for my Niad Stabilyzers was hooked to the circuit for starboard engine (gauges and solenoid) The solenoid valve in the Stabilyzer was shorted to ground causing low voltage and drawing current through gauges specifically the temp gauge ( must be low resistance sender). When I disconnected Stabilyzer circuit gauges were fine. I replaced solenoid valve assembly and put in power relay for stabilyzers activated by Starboard engine on breaker. (hydraulic pump for stabilyzer is on starboard engine)

Bud
__________________

Bud is offline   Reply With Quote
Old 08-10-2020, 04:20 PM   #3
Senior Member
 
City: Rocky Point
Country: United States
Vessel Name: Livin The Dream
Vessel Model: Sea Ray
Join Date: Nov 2017
Posts: 137
How were you able to determine what was causing the issue?
larman is offline   Reply With Quote
Old 08-11-2020, 07:35 PM   #4
Bud
Senior Member
 
Bud's Avatar
 
City: KEY COLONY BEACH
Country: United States
Vessel Name: Izzy Rose
Vessel Model: Grand Banks 49
Join Date: Aug 2017
Posts: 236
I was inspecting the instrument panel and saw the power wire from the stabilyzer system hooked to the power on panel. I disconnected the stabilyzers and saw the instruments went back to normal.
Bud
Bud is offline   Reply With Quote
Old 08-12-2020, 06:49 PM   #5
Guru
 
C lectric's Avatar
 
City: Gibsons, B.C.
Country: Canada
Vessel Name: Island Pride
Vessel Model: xxxx
Join Date: Oct 2007
Posts: 2,985
Check the + and - leads that supply voltage to the panel. If they are in poor shape then none of the guages will work properly.
If need be follow back to the busses and battery switches that supply them.
Loose or oxidized connection can cause this.

For specific guages check also at the sender terminal for clean tight connections.

If there are questionable connection creating excessive Vdrop then as loads are turned on or off it can create too large Vchanges for meters to allow for.

When I got my boat a long time ago my nom working guages started working as I cleaned terminals and often reterminated wires with new crimp on ends.
C lectric is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 06:02 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×