Question about my temp. gauge!!
I did some testing on a temp sender which was supposed to be for a 67 dart 273.
The results were interesting.
Could not screen capture the spread sheet completely
Column A is temperature of a pot of water
Column B is the restance of the sender
Column C is the percentage of gauge movement based on 10, 23 and 72 ohms 10 ohms being full scale (far left)
23 ohms being 1/2 scale (center)
74 ohms being low on scale (far right)
Left and right is based on dodge dart standard cluster.
The 1/4 and 3/4 ohm values are taken from other testing (fuel gauge) that I did with resisters at the sender end.
The 67 dart temp gauge has the "normal" range shifted to the left. It was corrected in 68 or 69.
When my temp guage was functioning correctly it would run just a tad over the left line of "normal" about 1/3 scale when it was cold out. ( That sets it at about 195)
When it is hot out it would run closer to center but enough to the right to put it at about 210.
Hope this info helps.
As AJFormS mentioned if you measure the temp of the thermostat housing or bypass hose or upper rad hose, or all 3 and you look at your temp gauge you can sort of calabrate your OEM gauge.
I did some testing on a temp sender which was supposed to be for a 67 dart 273.
The results were interesting.
Could not screen capture the spread sheet completely
Column A is temperature of a pot of water
Column B is the restance of the sender
Column C is the percentage of gauge movement based on 10, 23 and 72 ohms 10 ohms being full scale (far left)
23 ohms being 1/2 scale (center)
74 ohms being low on scale (far right)
Left and right is based on dodge dart standard cluster.
The 1/4 and 3/4 ohm values are taken from other testing (fuel gauge) that I did with resisters at the sender end.
The 67 dart temp gauge has the "normal" range shifted to the left. It was corrected in 68 or 69.
When my temp guage was functioning correctly it would run just a tad over the left line of "normal" about 1/3 scale when it was cold out. ( That sets it at about 195)
When it is hot out it would run closer to center but enough to the right to put it at about 210.
Hope this info helps.
As AJFormS mentioned if you measure the temp of the thermostat housing or bypass hose or upper rad hose, or all 3 and you look at your temp gauge you can sort of calabrate your OEM gauge.
