88 ranger 2.9 error code 96

[Jwill41]

Getting this code from engine light. Any help is greatly appreciated.

 

[franklin2]

Fuel pump relay problems.

 

[Jwill41]

Finally ready to piddle with it again. Switched relays with my other ranger. Same codes. Fuel pump running constantly with key on engine off.

 

[franklin2]

Fuel pump running constantly with key on engine off.

That's a problem. Does the wiring look original or hacked up?

 

[Jwill41]

Wiring looks original. Truck also getting fuel in oil. Replaced pressure regulator with same results. Runs great.

 

[franklin2]

The computer grounds the wire going to the relay, and that runs the pump. First thing to do is pull the relay with the key on and see if the pump stops. If it does, see if you can feel the relay click in your hand when you pull it. If the relay clicks, it's being told to activate the pump somehow. That wire going to the computer is grounded out somewhere, or the computer is bad.