Temp Gauge & Courtesy Lights Not Working, Related…?!

Ribbedroof

Comic Book Super Hero
Supporting Member
Jan 4, 2009
3,898
113
Wellston, OK
There should not be any sealant on the sender, as it grounds to the block through the case. Teflon tape or other sealers may inhibit that ground path.
 

G_RIDE_81

Not-quite-so-new-guy
Thread starter
Oct 30, 2019
32
8
There should not be any sealant on the sender, as it grounds to the block through the case. Teflon tape or other sealers may inhibit that ground path.
The broken one in the picture has been installed on the engine with no sealant for weeks now. Still not working in my case.
 

G_RIDE_81

Not-quite-so-new-guy
Thread starter
Oct 30, 2019
32
8
Ground strap to body from engine reinstalled after 350 swap?
There is suggested diagnostic test that says if you ground the green wire which connects to the sensor while key is "On" and the gauge sweeps "hot" it means there is no break in the green wire leading to the gauge cluster and the gauge itself is working.
 

fly_25

Not-quite-so-new-guy
Oct 20, 2020
48
8
I am having the exact same issues with my gauge. I replaced the sensor and the gauge is at the 12 o'clock position when cold, and the 3 o'clock position when hot. Must be a problem with the gauge itself
 

81Regal

Royal Smart Person
Apr 5, 2009
1,532
83
Terril Iowa
Check the ground under the dash on the drivers side. Clean and tighten.
 
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