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Thread: Temp gauge not working
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06-06-2016, 11:15 PM #11
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Kind of looks like what I replaced. 20160515_180531.jpg but now I'm hoping it's this one. 20160515_180623.jpg
Originally Posted by Jceclipse01
This is the one that I needed
Sent from my SM-G900V using Tapatalk2008 Moomba Mobius LSV.
325 ASSAULT
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06-06-2016, 11:19 PM #12
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The one on the bottom picture is the one that goes to the ecm I think.
Sent from my SM-G900V using Tapatalk"You spend most of your life, looking for the adult that you are... then you spend the rest of your life looking for the child that you were."
98 boomerang sold
04 outback lsv
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06-06-2016, 11:24 PM #13
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Do those typically go out after over heating? It was working fine until It over heated. I hope it's not the gauge. Seems like a hassle to find and install.
2008 Moomba Mobius LSV.
325 ASSAULT
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06-06-2016, 11:27 PM #14
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Yes it is for ECM. Is it even a possibility that could fix my problem?
2008 Moomba Mobius LSV.
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06-07-2016, 06:07 AM #15
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Give Discount inboard marine a call they'll help you out
Sent from my SM-G900V using Tapatalk"You spend most of your life, looking for the adult that you are... then you spend the rest of your life looking for the child that you were."
98 boomerang sold
04 outback lsv
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06-07-2016, 08:21 AM #16
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Hi,
I had the same issue with my 2001 Launch SSV (Supra).
To check the gauge, turn on the ignition without starting the engine and ground the S-post of the gauge, that is the send-cable from the sender.
Just ground it between gauge ground and S. This should spike the needle, if it doesn't, check for 12V at the I (ignition) terminal of the gauge.
If you have 12v, but it doesn't spike, bad gauge.
If it does spike, try grounding the other end of the sender cable back at the sender. If grounding this gets it to spike the cable is good.
Test the sender with an Ohm-meter.
If you get the correct ohm-reading, you can google mercruiser temp sender ohm range and probably find something useful, the sender is good.
In my case the sender-test failed, but I took it one step further, I tested the temp of the block it self. If you have a laser temp-gun you can use that.
Mine wasn't warm enough. Turns out the thermostat was stuck open and I never reached operating temp.
Is it running fine with normal fuel economy, then probably this isn't the case. Mine was running fine but with high fuel consumption.
My sender was under the thermostat-housing so I had to unbolt the thermostat housing to get to the temp sender.
If yours is the same you might just as well unbolt the thermostat housing and check the thermostat, if the gauge tests good.
Good luck,
Mike
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