Thread: Gas gauge blues
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Old 04-28-2013, 01:49 AM   #11
luvbowties
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Smile Re: Gas gauge blues

Quote:
Originally Posted by 72 5500 View Post
The needle moves freely and when the key is on the needle goes to empty. Pink wire has 12 volts when key is on, brown wire is conected to the sending unit. The ground wire on the sending unit is grounded. I pulled the sending unit out of the tank and moved the float to full and empty with out any movment of the needle.
I'm thinking I still have a bad gauge.
If your needle moves when you run a direct wire, as suggested above, your original wire is likely touching a ground somewhere, leaving your gauge seeing NO resistance, as in "B" below. This would cause gauge to read "E" all the time.
HTH,
Sam
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