*Update Nov 2019*
Decided to redo the test at multiple temperature points for greater accuracy. Don't know how consistent minispares senders are but my results should help you calibrat the resistance of your temperature gauge:
2.5C - 2090 Ohms
52C - 234 Ohms
65C - 149 Ohms
75.5C - 108 Ohms
82.3C - 86 Ohms
84.3C - 81 Ohms
99C - 52 Ohms
So I needed to change my temp sender and found that my gauge was always reading max at normal operating temperature.
Pretty sure its not overheating as Ive driven the car for over an hour at high revs and had no steam coming out. So i figured I would test the sender to calibrate the gauge and share the specs for everyone's benefit.
The way i did it was like this:
1) dipped the sender in an ice water bath for 5 minutes, then measured the resistance between the terminal and body with a multimeter
2) let it sit in the air for 20 minutes, then dipped it in hot water for 5 minutes
3) with the multimeter hooked up, i dipped the sender into a pot of boiling water over the stove, ensuring that the sender does not touch the pot, then waited for the multimeter reading to settle down.
Edited by BaronVonchesto, 22 November 2019 - 09:13 AM.