i saw what you did there!
Join Date: Sep 2002
Location: Lincoln IL
fast68chevy is offline
Re: 2002 S10 Change Fuel Pump, Oil Sensor and Relay but no Power to FP.
well it may be low voltage problem to the pump
the wire along frame rail to the pump may be damaged and too muh resistance and it does happen on the first gens as well i have had to repair this issue on quite few trucks of both gens
on most of them somewhere between the relay and the pump is where the wire goes bad and so full 12 v doesnt make it to the pump
since you hear the pump run at key on run position
does it run for a couple seconds only then stop?
if the sound is constant and doesnt stop within a couple seconds then it cant be the pump then
becuase it is timed by the pcm signal to the relay
to just prime the fuel system, build up the pressure for those couple seconds only just before cranking the engine
air in the system?
many different vehicles parting out, engine underhood dash electrical and more parts! cars, trucks, fords, chevies, etc. - text me 217 671 7792 anytime! Own: '54 F350 dually, '54 & '57 F100's, '57 Bel Air gasser, '68 Corvair Monza 'vert. '72 Chevelle SS HT, '82 K10 SF, '85 Elky SS 310ci, '93 C1500 4.3L Z