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09-25-2017, 03:42 PM
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#1 |
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Senior Member
 
Join Date: May 2013
Location: Lino Lakes, MN
Posts: 362
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Fuel gauge trouble...
So I installed a new tank/sending unit in my '72
Well I also installed a tach cluster at the same time. The gauge only reads 1/4-2/3 tank no matter what. I didn't test the sweep prior to install but it was free and the float wasn't bent out of shape. Any ideas? I can certainly make an educated guess at the level but I'd like to see it working. MOD
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Chad '71 GMC 2500 Custom Ol Blue '72 Custom Deluxe Highlander Stuffed Olive '73 Trans Am '13 Silverado 2500 Duramax Storm Trooper |
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09-25-2017, 03:44 PM
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#2 |
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Account Suspended
 Join Date: Jul 2016
Location: Tacoma, WA
Posts: 6,873
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Re: Fuel gauge trouble...
If you unplug the sending unit the gauge usually goes to 3 o clock position
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09-25-2017, 05:00 PM
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#3 |
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Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
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Re: Fuel gauge trouble...
Turn the ignition on.
Unplug the sending until wire and watch the gauge. The gauge needle should peg one way. Ground the wire at the sending unit to the tank or something grounded to the chassis. The gauge needle should peg the opposite direction. if it does, its your sender. If it doesn't, its your wiring or gauge.
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"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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