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Temp and fueltank s...
 
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Temp and fueltank sender resistance

 
General Discussion
Last Post by Jarmo Sirkia 1 month ago
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 Jarmo Sirkia
(@jarmosirkia)
Eminent Member
Joined: 3 months ago
Posts: 16
Topic starter October 8, 2025 10:36 am  

Could someone tell me what are correct resistance numbers on temp sender cold warm and fueltank sender full and empty? Car is 1960 fireflite, 361 engine.


   
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 Jarmo Sirkia
(@jarmosirkia)
Eminent Member
Joined: 3 months ago
Posts: 16
Topic starter October 8, 2025 11:03 am  

I forgot to say please..


   
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 MarkKubancik
(@markkubancik)
Noble Member
Joined: 15 years ago
Posts: 1054
October 10, 2025 11:56 am  

Jarmo...I don't personally know though someone of the club's Facebook page may know. I'll post your question there and report any responses.


   
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 Jarmo Sirkia
(@jarmosirkia)
Eminent Member
Joined: 3 months ago
Posts: 16
Topic starter October 11, 2025 10:25 am  

@markkubancik 

Thanks Mark!


   
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 GlennColburn
(@glenncolburn)
Eminent Member
Joined: 15 years ago
Posts: 36
October 13, 2025 8:45 am  

Jarmo-

Unfortunately, the service manuals do not list the resistance of the sending units.  I was going to check the values on my 1959 Firesweep, but they may not match up with 1960.  The 1959 guages run on 12 volts, but starting in 1960 they run on 5 volts.  They may or may not be calibrated to use the same sending units.


   
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 Jarmo Sirkia
(@jarmosirkia)
Eminent Member
Joined: 3 months ago
Posts: 16
Topic starter October 13, 2025 4:05 pm  

Thank you Glenn. I did not know them run 5 volts. That is important, i have to contact someone, who knows electrics better than me.. 


   
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 Jarmo Sirkia
(@jarmosirkia)
Eminent Member
Joined: 3 months ago
Posts: 16
Topic starter October 14, 2025 6:41 am  

This is from 1960 service manual:

[IMG] https://forums.offipalsta.com/picture.php?albumid=9157&pictureid=248295 [/IMG]

I can't see any mention of 5 volt to gauges, hmm...


   
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 GlennColburn
(@glenncolburn)
Eminent Member
Joined: 15 years ago
Posts: 36
October 19, 2025 10:05 am  

Jarmo-

Your service manual explains this in the Electrical and Instruments chapter on pages 50 and 51.  Section b. on page 51 tells about the 5 volt step down.

For reference, here are some readings I was able to take:

Full fuel tank sender resistance- 1959 DeSoto 22 Ω, 1965 Chrysler 12 Ω, 1966 Dodge 5 Ω.

Temperature sending unit cold/normal operating temp-  1959 DeSoto 1100/70 Ω,  1966 Dodge 500/33 Ω.  The 1965 Chrysler only has cold and hot lights, no guage.

I hope you find this information useful.

Glenn


   
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 Jarmo Sirkia
(@jarmosirkia)
Eminent Member
Joined: 3 months ago
Posts: 16
Topic starter October 25, 2025 11:00 am  

Thank you Glenn, you're the man!!! So glad i joined club, there are so helpful people here!


   
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