96 Suburban, only 5v at Fuel Pump Relay??
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96 Suburban, only 5v at Fuel Pump Relay??
calponte
11/13/2007 6:05:10 AM
Hi.
Trying to trouble shoot a fuel pump problem with a 96 Suburban.
Fuel pump does not come on and no pressure on high-side line.
Relay functions when key is cycled but there is only ~5v coming to and going out of the relay.
Any ideas?
Thanks so much
DAVID L. PAUL
11/13/2007 7:01:28 AM
some vehicles don't require a full 12 volts for the fuel pump but to be sure locoate your inertia switch and un plug it and hook a 12 volt jumper wire to the one going to the fuel pump and see if it will run that way
RonH
11/13/2007 7:12:12 AM
If the fuel pump refuses to start, you may be able to get it going by hitting the bottom of the fuel tank with a rubber mallet or something similar. If it start when jarred this way, you will know for sure it's fuel pump going out.
calponte
11/13/2007 8:13:28 AM
Oh ok. Does anyone have a diagram or know which color is the postive feed to the pump?
And is there an inertia switch on these trucks? I thought there wasnt
