JeepHammer
04-16-2008, 09:06 PM
Cranks, but won't start.
No fuel pressure.
Checked/Replaced Automatic Shut Down and Fuel Pump Relay with known good.
Checked factory relays and they checked out fine.
Can't find a fuel pump fuse location in the Haynes manual.
I don't have an owners manual and would appreciate help finding out if fuel pump fuse exists, and if so, where it's located on '94 with MPI.
Pump is 2 year old Bosch/Mopar that works fine when hot wired.
New, known good pump wouldn't work when connected to wiring harness.
Fuel pump connector is in good shape, no corrosion.
When multi-meter is hooked to pump power wires, reads open circuit.
When key is turned 'ON', I get closed circuit, but no voltage reading.
Very good at using multi-meter and diagnosing electrical problems, but can't find a good schematic for this vehicle...
Haven't even found the positive source wire origin for the fuel pump in the Haynes manual...
Can anyone tell me what else/ where else to check and what else might cause this problems.
This is my dad's truck and he's driving me nuts to get it back on the road!
No fuel pressure.
Checked/Replaced Automatic Shut Down and Fuel Pump Relay with known good.
Checked factory relays and they checked out fine.
Can't find a fuel pump fuse location in the Haynes manual.
I don't have an owners manual and would appreciate help finding out if fuel pump fuse exists, and if so, where it's located on '94 with MPI.
Pump is 2 year old Bosch/Mopar that works fine when hot wired.
New, known good pump wouldn't work when connected to wiring harness.
Fuel pump connector is in good shape, no corrosion.
When multi-meter is hooked to pump power wires, reads open circuit.
When key is turned 'ON', I get closed circuit, but no voltage reading.
Very good at using multi-meter and diagnosing electrical problems, but can't find a good schematic for this vehicle...
Haven't even found the positive source wire origin for the fuel pump in the Haynes manual...
Can anyone tell me what else/ where else to check and what else might cause this problems.
This is my dad's truck and he's driving me nuts to get it back on the road!