Fe Temp Sender
Lead Gopher
Joined: Aug 2012
Posts: 10,066
Likes: 1,622
From: Seattle
Couple of notes
1. There are two different senders - a 230 and a 260 - which one are you using?
2. Make sure you use a conductive sealer on the threads of the sender. The engine block acts as the ground for it.
3. You can adjust the actual gauge to agree with a sender if it comes to that. This is a youtube video I made of adjusting the temp gauge.
1. There are two different senders - a 230 and a 260 - which one are you using?
2. Make sure you use a conductive sealer on the threads of the sender. The engine block acts as the ground for it.
3. You can adjust the actual gauge to agree with a sender if it comes to that. This is a youtube video I made of adjusting the temp gauge.
Senior User
Joined: Sep 2019
Posts: 336
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Thanks much TA455HO, very interesting. Clear and well done.
I was in a small July 4th parade a week ago. During the short slow parade, the needle got up just above 190, higher than I've ever seen it read, but no more and all stayed good. Mine is not the same gauge as your video but now I know it has 'some' range. Mine is the small upper r/s gauge incorporated into the round speedo face...with the small fuel on upper l/s. That fuel gauge works not at all.
Also you mention using conductive sealer on sending unit? Thinking no teflon tape...but pipe dope ok?
I was in a small July 4th parade a week ago. During the short slow parade, the needle got up just above 190, higher than I've ever seen it read, but no more and all stayed good. Mine is not the same gauge as your video but now I know it has 'some' range. Mine is the small upper r/s gauge incorporated into the round speedo face...with the small fuel on upper l/s. That fuel gauge works not at all.
Also you mention using conductive sealer on sending unit? Thinking no teflon tape...but pipe dope ok?
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Cargo Master
Joined: Apr 2001
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From: Vancouver
Good little video Chad. Do you calibrate the high setting on the workbench with a 6V source or with12V through an IVR?
Eric
Eric
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Lead Gopher
Joined: Aug 2012
Posts: 10,066
Likes: 1,622
From: Seattle
I've found it most accurate to calibrate the high end while the vehicle is running at operating temp or in actual service so I can get it as close as possible. It has to be largely disassembled to get to the back side of the gauges, but wired up like normal.
Lead Gopher
Joined: Aug 2012
Posts: 10,066
Likes: 1,622
From: Seattle
That's the temperature at which the sender delivers maximum voltage to the gauge. Or, in other words, it's the temperature at which the sender reaches it's lowest possible ohms resistance.
The 260 allows the gauge to theoretically show a higher engine temperature. For me I like to run the 230 sender and set my gauge to read at the highest line when it reaches that level. You can bench set this if you place the sender in a pot of boiling water while running the gauges with an external circuit set up with a breadboard and an ICVR on 12V. Or just put a piece of cardboard in front of the radiator if idling and it should reach max temp - just watch for overheating - have it ready to adjust and work quickly.
The 260 allows the gauge to theoretically show a higher engine temperature. For me I like to run the 230 sender and set my gauge to read at the highest line when it reaches that level. You can bench set this if you place the sender in a pot of boiling water while running the gauges with an external circuit set up with a breadboard and an ICVR on 12V. Or just put a piece of cardboard in front of the radiator if idling and it should reach max temp - just watch for overheating - have it ready to adjust and work quickly.
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