temp gauge
Thread Starter
Burning Brakes
Joined: Nov 2004
Posts: 1,028
Likes: 0
From: San Antonio Texas
temp gauge
temp gauge on my 79 L82 looks like a metronome. fluctuates rapidly up and down 10 to 20 degrees every couple seconds. is this most likely a sending unit problem, gauge or some other problem. what's the best way to troubleshoot it. thanks for any info.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
You can unplug the green wire at the sender and substitute a test light in place of the sender.This should put the temp needle at a fixed position.Drive the car and see if the needle still fluctuates.If you have or want to go to Radio Shack and buy a 68ohm resistor you can substitute the resistor which will put the temp needle around 215-220.If after the substitution the needle stops fluctuating then the sender is probably bad.(You can try removing the sender and cleaning the threads to improve the ground.)
