Spanky414
NAXJA Forum User
- Location
- North Bay, Ontario, Canada
Hi guys, I have an 88 XJ with the 4.0 engine and I'm having problems with the pump and possibly gauge.
I was driving along and it stalled on me, I restarted it and it died right away and I tried again and it died right away.
I figured burned out fuel pump cause I was spending most of the day on empty.
So I unpluged the sending unit connection and connected the multimeter to the power and ground wires and if put the key to the run position it would read 11 volts for a couple seconds. Just like when you go to the run position and the pump primes for a couple seconds so I figured it was the connection or pump.
I pulled out the sending unit to change the pump and tested it and found that the pump works, I tested it through the sending unit connection so I figured that was ok too. Then I tested each individual connection and they all work so I called it good and put it back in the tank.
One question here, when I tested the connections the ground seems to be connected to the other connections but that seems right to me cause it would go through the gauge sender and fuel pump it self right?
So me and my buddy are thinking its a ground problem of some sort? But I followed the connection and its got a connection to ground as far as I can tell.
Now on to the fuel gauge, with everything connected and the keys in the run position the gauge goes way past full pretty much pointing out the passanger side of the jeep, kinda like my oil pressure gauge with a bad connection. It stays the same with the connection between the jeep harness and the sending unit unplugged.
Is this another sign of a bad ground or is the connection between the harness and the sending unit not getting through?
Thanks for the help.
I was driving along and it stalled on me, I restarted it and it died right away and I tried again and it died right away.
I figured burned out fuel pump cause I was spending most of the day on empty.
So I unpluged the sending unit connection and connected the multimeter to the power and ground wires and if put the key to the run position it would read 11 volts for a couple seconds. Just like when you go to the run position and the pump primes for a couple seconds so I figured it was the connection or pump.
I pulled out the sending unit to change the pump and tested it and found that the pump works, I tested it through the sending unit connection so I figured that was ok too. Then I tested each individual connection and they all work so I called it good and put it back in the tank.
One question here, when I tested the connections the ground seems to be connected to the other connections but that seems right to me cause it would go through the gauge sender and fuel pump it self right?
So me and my buddy are thinking its a ground problem of some sort? But I followed the connection and its got a connection to ground as far as I can tell.
Now on to the fuel gauge, with everything connected and the keys in the run position the gauge goes way past full pretty much pointing out the passanger side of the jeep, kinda like my oil pressure gauge with a bad connection. It stays the same with the connection between the jeep harness and the sending unit unplugged.
Is this another sign of a bad ground or is the connection between the harness and the sending unit not getting through?
Thanks for the help.