no fuel

2004 CHEVROLET CAVALIER
127,000 MILES • 4 CYL • 2WD • AUTOMATIC
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RP
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crank , no start. no gas. dropped tank. jumped pump and it runs. have 11.64 volts at pump connection and body connection when turning key to run for approx 2 seonds. switched relay with a/c relay and still no fuel. resistance prob?? or ???
Nov 28, 2010 at 2:51 PM
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RASMATAZ
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Could be the computer controlled circuit of the fuel pump relay coil side not energizing to complete the fuel pump circuit to the pump
Nov 28, 2010 at 2:55 PM
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RP
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any way of testing? sill tho wouldnt the pump run for the 2 secs it has 12 volts ?
Nov 28, 2010 at 2:59 PM
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RASMATAZ
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The fuel pump won't run for 2secs if there's a problem with the relay-try swapping the relay with a like one and see what happens-the relay only comes in play for 2 secs when the engine fires up its the fuel pump/oil pressure sending unit that powers the fuel pump constantly
Nov 28, 2010 at 3:05 PM
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RP
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swapped relay and no difference. yes, i meant to say that it IS energizing the pump with 12 volts for the 2 seconds. I,m thinking that the pump is getting proper voltage but NOT enough amps ????crappy ground or ??
Nov 28, 2010 at 3:12 PM
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RASMATAZ
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Check the fuel pressure with a fuel pressure tester if its within specs and also if the injectors are pulsing
Nov 28, 2010 at 3:15 PM
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RP
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Sorry, my answers are steering you wrong LOL and thank u for the quick responces!! i'll try to be more clear
the pump is definately good, will run jumped ( out of car )
has 12 volts to it for 2 secs when turning key on but pump wont run
harness from body to pump is good
switched relay
So i see in other posts possible poor ground not allowing enough amps? any ideas along that line?
Nov 28, 2010 at 3:26 PM
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