replaced fuel pump was blowing the fuse(ecm-b)reassembled problem unsolved checked fuel pump with direct power runs fine replaced relay and checked voltage of relay connector no voltage except.3voltsfrom orange wire should there be voltage at other wires? also checked continuity of wires back to pump ok no visual signs of short or broken wires anywhere else.could this be ecm or oil pressure sending unit driving me nuts and runnining out of money to throw at it any help would be greatly appreciated thanks.
no power to fuel pump on 1990 Chevrolet Suburban 1500
by Visitor in Davis Junction, IL on December 29, 2010
ANSWER by mastertech6371 on December 29, 2010
yes, you need to find out what else is on the circuit. i believe that the oil sender is on the circuit. look closely at that harness and if it is ok, remove the connector and see if the fuse stays alive, Roy
ANSWER by backyard tech on December 29, 2010
Roy is correct, it most likely is the connector where the pump plugs in. When the pump goes bad it melts the connector. Most of the time it's because the fuel filter has not been changed, causing a restriction in the fuel line, hence making the pump overwork, hence causing high amperage then melting the connector.
I have a 1999 Chevy suburban that has 200k on it and when i step on the gas it has no power and the rpm don't even rev up.lately it has been shifting at 3500 rpm. different subject when my foot is ...
car has all power and fuel pump runs but no start? replaced crankshaft position sensor because of stalling problem...ignition switch is new...
i have low fuel pressure at my schrader valve that is inbetween fuel pump and regulator,regulator is right before injectors,can the regulator cuase the fuel pump not to run.?
The only things that work around the cigarette and aux ports and the check engine light and I here the fuel pump come on
The sunroof may stop working for various different reasons. Our technicians tell us it is often better to replace the complete sunroof assembly than to try and repair the old one.