2.3L FI engine
125K miles

Following a new battery installation and having the engine die and not
restart after driving it approximately 50 miles the car was towed home
for further investigation.

I ran a compression check to eliminate the possibility of a bad head
gasket. I noticed that the #1 spark plug had a wet look to it and the
other three did not. Compression was good.

The new battery went to 5.5v overnight with NO lights on and the key
in the lock position. I disconnected the negative battery cable,
charged the battery and reattached the cable. When contact was made to
the post I heard a coil or relay at the right rear of the engine
energize and a could hear a humming sound. Removed the negative cable
and checked current. 1.5A draw.

After some experimentation with the ignition OFF, I determined that
the #1 fuel injector is turning on when the battery is connected and
there was a humming sound from a valve in a bypass hose that runs from
above to below the throttle plate.

During subsequent checks I found the fuel pump fuse blown. After
replacing the fuse I was able to start the engine with it dying after
a short run, as if it ran out of fuel. The fuse blew again while
testing around the #1 injector and the valve I mentioned above. I had
not attempted to start the engine nor was the ignition on. I have been
using a pushbutton switch to briefly connect the negative cable and
the negative post of the battery.

I checked the internal resistence across the injector and it shows 14
ohms as does the #2 injector. I have the rear seat cushion pulled up
and do not hear the fuel pump trying to run.

Not having a schematic I am at a loss to know where to look next
(other than having it towed to a dealer for repair). I also dropped
the panel under the dash to get to the relays but again with no
schematic I don't know how they are wired.

Thanks in advance for any help.