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temp sensender

GAS engine, transmission and generator repair and maintenance discussion forum.
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Topic author United States of America
tonyiiiafl
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temp sensender

Postby tonyiiiafl » July 7th, 2023, 5:57 am

I am going to upgrade the temp gauges on my 1994 7.4 closed cooled Bluewater 7.4. I saw two sanders coming out of the tstat housing. WHich is teh sender for gauge? The one facing FWD or the one facing AFT?

Thanks!
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km1125
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Re: temp sensender

Postby km1125 » July 7th, 2023, 7:42 am

Not sure. When the engines are warmed up, just turn the key to 'on' and disconnect one at a time and see which one affects the gauge.
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Topic author United States of America
tonyiiiafl
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Re: temp sensender

Postby tonyiiiafl » July 7th, 2023, 9:06 am

KM, my Admiral just said the same thing!

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Hoplite808
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Re: temp sensender

Postby Hoplite808 » July 7th, 2023, 9:58 pm

Use a jumper lead from ground and touch it to the sender wire on each one with the key on. The one that makes the gauge jump all the way up is the one to your gauge and hence the sender you are looking for.
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Topic author United States of America
tonyiiiafl
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Re: temp sensender

Postby tonyiiiafl » July 22nd, 2023, 8:28 am

UPDATE: I found VDO close to what I have, bought them and teh senders. Installed. Haven’t gone out yet, but now at idle, they sit just around 160. Used the infrared thermometer, and housings show 162ish to 163. Sea trial to come.
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