I am just tossing out other info that might have been over looked.
Sometimes you look at something so long that you forget some of the basic stuff.
Without a diagram of the wiring, it’s hard to say why one would stop working and the other are fine. (Every manufacture likes to do things a little different)
Some of the gages will use a pressure transducer and other will use a variable resister (most temp switches will use a variable resister)
(A variable resister will only use one wire, while a transducer will use 2 or more wires)
Have you tried to ground out the wire feeding the temp gage?
(Only if there is one wire coming from the sending unit)
Have you checked to see what Ohm’s you are getting from the sending unit?
When I have seen this type problem (cars only), 90% of the time it’s a bad wire / connector or sending unit.
Let us know what happens
David
Sometimes you look at something so long that you forget some of the basic stuff.
Without a diagram of the wiring, it’s hard to say why one would stop working and the other are fine. (Every manufacture likes to do things a little different)
Some of the gages will use a pressure transducer and other will use a variable resister (most temp switches will use a variable resister)
(A variable resister will only use one wire, while a transducer will use 2 or more wires)
Have you tried to ground out the wire feeding the temp gage?
(Only if there is one wire coming from the sending unit)
Have you checked to see what Ohm’s you are getting from the sending unit?
When I have seen this type problem (cars only), 90% of the time it’s a bad wire / connector or sending unit.
Let us know what happens
David
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