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Discussion Starter #1 (Edited)
fuel pump problems

My fuel pump is not getting power to send fuel. it sends a little at first then thats it. we ran the self diagnostic and it read 55 = no problem. any ideas? what should the volt read out be on the wires going into the fuel pump? do we check the 2 pin wire or the 3 pin?? thanks alot.
 

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Discussion Starter #4
ok we did that and it was around 12 at first then we checked again a second later and it was at 0. i think it has power for only a limited time at the begining
 

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Most electronic fuel pumps only receive a continuous voltage feed if the ECU senses an ignition pulse, ie: you need to crank the engine while checking for voltage at the pump. If all is well, you should get continuous voltage at the pump whilst the engine is turning over (assuming that your ignition system is OK and is feeding the ECU).
If you just turn the ignition to the "On" position without cranking the engine, you should momentarily find voltage at the pump and then it will drop away.
The reason for this is to prevent the pump from running with the ignition in the "On" position but without the engine running.
 
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