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04-23-2009, 12:06 AM
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#1 |
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Registered User
Join Date: Mar 2009
Location: Nebraska
Posts: 6
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88 Suburban Fuel Pump Wiring
I got a 1988 suburban and since the day I have got it the gas gauge is pegged out and the guy ran a wire from the fuse box to the fuel pump plug(connection between the wiring harness and pump harness). I unhooked the jumper wire and here is what I got.
Unhooked there is one keyed source power wire. Ok good. Connect the connector and the keyed source power wire becomes a dead wire. So something isnt right here and my pump wont work like its suppose to. The sending unit reads pegged full with the jumper hooked up, and empty with just the connector hooked in. |
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04-23-2009, 06:38 PM
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#2 |
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Low & Fast!
Join Date: Jan 2007
Location: Knoxville, TN
Posts: 3,110
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Re: 88 Suburban Fuel Pump Wiring
Anyone?
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04-30-2009, 01:40 AM
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#3 |
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Registered User
Join Date: Mar 2009
Location: Nebraska
Posts: 6
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Re: 88 Suburban Fuel Pump Wiring
Do these have a fuel pump safety switch?
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04-30-2009, 07:55 AM
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#4 |
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Low & Fast!
Join Date: Jan 2007
Location: Knoxville, TN
Posts: 3,110
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Re: 88 Suburban Fuel Pump Wiring
I think they do, but I could not say for sure.
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04-30-2009, 08:27 PM
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#5 |
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Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: 88 Suburban Fuel Pump Wiring
These don’t have a safety switch like a ford.
It sounds to me like the ground wire for the tank sending unit has lost connection. Attach a jumper wire to a good clean ground and the outside of the sending unit and see what happens. |
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