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09-22-2010, 08:04 PM
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#1 |
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Registered User
Join Date: Oct 2007
Location: south jersey
Posts: 44
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turn on headlights and gas gauge goes to zero
just did a motor swap and now when i turn my headlights on my gas gauge goes to zero and my dashlights are non-existant and my buzzer goes off.....anyone have a clue as to what i did or didnt do????
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Ross K 1985 Silverado LT1 1970 Chevelle SS396 |
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09-22-2010, 08:14 PM
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#2 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: turn on headlights and gas gauge goes to zero
is it just your gas gauge that stops working?
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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09-22-2010, 08:22 PM
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#3 |
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Account Suspended
 Join Date: Dec 2008
Location: Huntsville,AL
Posts: 2,119
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Re: turn on headlights and gas gauge goes to zero
Sounds like a loose wire somewhere. Ground or something. Either that, or you're getting bad bad BAD gas mileage. Lol (Christine, relatives maybe?)
Last edited by nbpro; 09-22-2010 at 08:25 PM. |
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09-22-2010, 08:28 PM
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#4 |
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Registered User
Join Date: Mar 2010
Location: Amherst VA
Posts: 150
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Re: turn on headlights and gas gauge goes to zero
I would second the ground issue as you have a high resistance somewhere. You can still have good voltage but as son as you have current that voltage will drop quick with a high resistance connection such as a bad ground from the chassis to the cab.
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09-22-2010, 08:29 PM
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#5 | |
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Registered User
Join Date: Sep 2010
Location: Richmond, Va
Posts: 573
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Re: turn on headlights and gas gauge goes to zero
Quote:
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09-22-2010, 09:45 PM
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#6 |
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Registered User
Join Date: Oct 2007
Location: south jersey
Posts: 44
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Re: turn on headlights and gas gauge goes to zero
yes its only the gas gauge.....ill go over the grounds as that seems to make sense thanks guys!
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Ross K 1985 Silverado LT1 1970 Chevelle SS396 |
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09-22-2010, 09:54 PM
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#7 | ||
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Account Suspended
Join Date: Dec 2008
Location: Huntsville,AL
Posts: 2,119
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Re: turn on headlights and gas gauge goes to zero
Quote:
Quote:
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09-22-2010, 10:39 PM
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#8 |
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Registered User
Join Date: Oct 2007
Location: south jersey
Posts: 44
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Re: turn on headlights and gas gauge goes to zero
im looking at schematics right now....it seems that i must have something crossed as well .....i installed a new headunit and i hooked everything up prpoerly so i think....guess ill pull that out and take another look
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Ross K 1985 Silverado LT1 1970 Chevelle SS396 |
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09-22-2010, 11:38 PM
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#9 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: turn on headlights and gas gauge goes to zero
check the power hookup.....just bought a 78 jimmy and it did the same kinda thing (it ajusts with dimming)this am looked under the dash and a cheap tac looks wired up wrong the power is from the light dimmer,but there is lots of loose wires yet to play with
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 Last edited by motornut; 09-23-2010 at 12:42 AM. |
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