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04-03-2013, 07:01 PM
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#1 |
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Registered User
Join Date: Jan 2007
Location: tacoma wa.
Posts: 1,037
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78 c20 gas gauge
Looking for a guide to troubleshoot and testing of sending unit without dropping the tank.
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04-04-2013, 09:55 AM
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#2 |
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Registered User
Join Date: Jan 2007
Location: tacoma wa.
Posts: 1,037
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Re: 78 c20 gas gauge
Anyone?
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04-04-2013, 10:14 AM
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#3 |
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Registered User
Join Date: Mar 2013
Location: Netherlands
Posts: 116
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Re: 78 c20 gas gauge
I don't know how to test it but is your gauge pointing to the right? First check the wiring and especially grounding.
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04-04-2013, 11:00 AM
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#4 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: 78 c20 gas gauge
from what i've seen
E (stuck)can mean the sender wire is shorted to ground over F can mean the sender wire is off or open
__________________
John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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04-04-2013, 12:17 PM
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#5 |
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Registered User
Join Date: Jan 2007
Location: tacoma wa.
Posts: 1,037
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Re: 78 c20 gas gauge
It's on full position and I'm thinking bad sending unit. Does anyone know the stock tank capacity? Time to lower tank and check for power.
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