Originally Posted by Que89YJ
No, you are explaining it. There should be no voltage with the key off. It is wired wrong. The fact that you have 12 there doesn't tell you everything you need to know except that if that was left on the way it was wired you will kill the battery and or the pump. You need to pull the pdc and check the fuel pump wiring at the relay.
Check your fuel pump by jumping power direct to the pump. You have the pump out so take up front and put power right from the battery to it.
haha, you're killing me Que!
I dont feel like requoting myself, so i'll just say, toaday at 1:14 am-
so i pulled off the fuel pump,
took the two cables, put one on the batterys ground terminal,
and one on the positive terminal.
then at 3:11 pm
I used the two pieces of wire on the unit to test the fuel pump, and I got nothing. and both wires were in good working order, no resistance worth noting.
the bottom line is~
All three wires going into the pump are as mentioned, in working order (except the hot is strangely always hot)
the fuel pump has been "jump tested" and it did not work.
it's broken, malfunctioning, pick a word.
I am not sure what i did to it,
but i would PREFER to not fry it again.
being a college student, I can only afford so many $70 fuel pumps.
so would that constant voltage really be a problem that would break a fuel pump?
I guess i should backtrack.
I bought the jeep in 08, with the wiring in it's current predicament.
I drove it for a year, and then one day, after playing in some mud,
I got towed home. I cleaned up the Jeep, and attempted to fire her up, and it made the clear indication that it was not receiving gas.
I opened the tank and saw a glittered tank- the pump had some how grinded itself and decided not to work anymore.
so I replaced it, and the second one either never worked,
or pretty much instantly broke, I'm not sure i did not get enough time to fully test, now I'm testing all the parts, trying to find out what i can do to make sure the next pump lasts a lot longer than this one has.
Is it actually bad for those 12v to be constant?
or will that just drain my battery?
oh, and thanks for clearing that typo again.
I thought the wide spot was some sort of term,
like the skinny pedal you know?
skinny pedal i get, that one is easy,
but wide spot lost me.
the weld spot is good though,
like I said, the whole ground, grounds.
all along the wire and at the sending unit. it's grounded.