most mopar senders you can buy today are for thermal gauges ; the 56 I assume us like 57 ? - it is a gauge with magnetic coils . Thermal ohms range is wrong
The thermal senders are ( for mopar ) about 10 ohms full and 80-90 ohms empty .
Those senders supplied , particularly by Vans , and others often have incorrect arm length resulting in reading E with 8 gallons in the tank, the float does not hit bottom of tank and rate of change will be wrong too ; not your problem necessarily but information . I got into this on a 57 i do not remember ohms range but believe it is higher ohms at E than a thermal sender . Someone with a 56-58 ( maybe 59?) sender can measure the max ohms exactly . Do you have the old one ?
When you say toast , as long as wire coil is intact it can be saved . Do not increase force or mess with / bend the little brush , if you do it will tear up the resistance wire winding .
Ford dealer has the brass tanks .
There is a product on Amazon , a kit you make your own sender , it may need mechanical adaption to the 56
tank closure disc . Cut off old one , use screws to mount the kit one inside tank to stub of old one . It is built at top for a ring of screw fasteners , most mopar have a lock ring .
Follow instruction exactly , pivot on this one must be in middle of tank ( they tell you the measurements ) . I first tried to duplicate the Chrysler one , with bent arm , offset pivot etc — Bad mistake .Turned kit to junk .( you cut stuff )
Well made thing maybe 20$ , but you will need to match ohms . Mine was for thermal gauge ( 10-90 )
key fact : Arm is kept straight moves equally up and down on new pivot in middle of tank depth .
Formula tells you how long to
make arm .
Sorry for not having brand etc on call in head .. A year back , kit worked great . I bought 3 more , having wasted days on this issue,,replacements thst are all wrong
hope the info helps you ,
Jg
On Oct 14, 2024, at 9:09 AM, towsonhe <towsonhe@xxxxxxxxx> wrote:
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