SOURCE: fuel pump problems 2003 s10 chev 4.3 v6
Your ECU is what acctivates your fuel pump realy. Put the key on the run possition and pull the ecu fuse for a few seconds and reinstall it ans it should accivate your realy for 5 seconds, Good luck.
SOURCE: Fuel pump constantly runs
sounds like you haven't got the right relay or the replacement has failed. pull one relay at a time and go back to the rear of the vehicle and listen for the pump. make sure the key is on when you do the test.
SOURCE: trying to locate fuel pump relay for 1991 corvette- coupe
The fuel pump relay in the 1991 corvette is located under the IP on the pass side.
Open pass door, unscrew two screws under the glovebox (you will be upside down in the car), take off the fuse panel, unscrew third screw to plastic plate underneath glovebox, pull away carpet (velcro), pull down plastic plate (watch out for the wiring to the lamp), then under the glovebox you will find a number of fuses and relays if you dive in under there DEEP, prob 4 or 5 in a row, not really sure wich one, but one in the middle is the fuel relay, and they are the same (interchangable).
Take a look at --the12volt.com/relays/relays.asp--
It´s those relays we are talking about.
SOURCE: 1991 astro . 4.3 135000 miles . turns over wont
listen for a buzzing sound in the rear when turning the key.
if you cannot than take off the fuel filter and let it hang down. than try turning on the key. fuel should spill out smartly. if not replace the pump.
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