Hi all.
Anyone know , or can check , what the ohm reading should be at my engine temp sending unit on my "59 Imperial w 413 ?? I bet most forwardlook cars use the same unit. My guage works (goes full scale when sender wire is grounded).
Warmed up I am seeing 180 Ohms at 180 Degrees !!! Yet my guage reads very low. My guess is the ohms at 180 degrees should be lower -- like maybe 120 ???
Posted 2016-12-05 3:45 PM (#527955 - in reply to #527949) Subject: Re: Engine Temp sender unit ohms
Veteran
Posts: 242
Location: 33844
Well -- I answered my own Q !! Ran my '60 Imp while looking at the ohm values -- I got about 30 ohms at 160 , 20 ohms at 185 degrees.
So Cold to Hot is about 40 to 20 ohms.
Posted 2016-12-05 5:29 PM (#527962 - in reply to #527949) Subject: RE: Engine Temp sender unit ohms
Expert
Posts: 3777
Location: NorCal
The lower the resistance, the higher the gauge will read. If the wire is removed from the sender and grounded (zero resistance) the gauge will climb to full scale.