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No but no matter how many times I turn the key to on position and then off to supposedly re-pressurize the system(and I have spent at least a full hour at a time for a couple of days in a row) all I get from the schraeder valve is a dribble at best. I also disconnected the fuel line between the pump and the filter and turned the key to on and got less then a half a cup of fuel. Not sure if that’s right. Do you know of a way to test the pump with a multi meter? I don’t have a pressure tester and just don’t have the dough to rent one till about a month or so.
If your not getting any fuel at the rail and the pump is loud, then it really sounds like the pump is shot.
You can’t really test a pump with a multi meter, but you can test power to the pump and do a voltage drop test if you want.
I don’t really think you need to do that though cause you hear the pump running and it’s not pumping.
Check out the link to a free chiltons site we have in the repair/how to section for a wiring diagram, you can just type in chiltons in the search bar also and it should come up.
Good luck and please keep us posted.T)Quoted From mr.cox72:
No but no matter how many times I turn the key to on position and then off to supposedly re-pressurize the system(and I have spent at least a full hour at a time for a couple of days in a row) all I get from the schraeder valve is a dribble at best. I also disconnected the fuel line between the pump and the filter and turned the key to on and got less then a half a cup of fuel. Not sure if that’s right. Do you know of a way to test the pump with a multi meter? I don’t have a pressure tester and just don’t have the dough to rent one till about a month or so.
1/2 cup of fuel may be the right volume for the 2 seconds or so that the pump runs to prime up. You said you did this BETWEEN the pump and filter – and that there’s hardly any fuel at the schrader valve? Maybe you just have a clogged fuel filter. That would explain the noisy pump, it’s working very hard to pump against a restriction. If that’s the case, don’t run the pump again until you replace the filter or else the pump will shortly be ruined.
You can test the fuel pump with an ammeter through the relay socket. If it’s drawing high amperage, it’s overworking, indicating a possible restriction. When you parked the vehicle, what was the fuel level? If it was very low, the sediment in the tank would have alot of time to settle, and could have been the first thing pulled into the fuel pump. If it’s drawing low amperage, it’s probably failing in general. You need to find what the amp specs should be so you don’t pop a fuse in your meter, and understand that you have to put the ammeter in series with the circuit.
I also had the pump connected to the filter and then disconnected from the line with same results.about a half cup. But now after removing the pump assembly and dissecting it to remove the electric motor, I found a fairly sizeable amount of metal shavings inside the housing. I have a positive outlook that I am on the right track. swapped the motor with a motor from a caddy deville assembly (north star version also). housing was a little different but motors are identical. So far, so good but I’m having trouble securing the retaining ring. Been rapping at it around and around with a hammer and brass drift but just cant get it to pop into place all the way. ready to scrap the whole works. Ha ha. Just kidding. But it is proving a pain. Maybe it’s a sign I’ve forgotten something.
http://www.youtube.com/watch?v=piOzN1tZI_E
This is the video that I did on fuel pump testing, BTW this information comes from people that make fuel pumps. That said since you have a ‘loud’ fuel pump perhaps there’s an issue with the pump or a restriction somewhere, perhaps a faulty fuel psi regulator but you won’t know for sure till you do some testing and check the actual fuel pressure against spec. Keep us posted on your progress.
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