Hi, new to fte, I have a 1990 f250 7.3 diesel with e4od. My od off light started flashing Saturday morning when I started it up, it doesn't go off at all. I drove it about 15 miles to my farm and parked it. I know I need to read code but cant find access port. I tried disconnecting battery cables, checked for loose wires, tach and speedometer seem to be ok. I could use some suggestions. By the way it was my only transportion, I bought a 08 Ford Focus Saturday, needed something to drive.

 

I have a 1993 F350 same motor/trans combo and it also does this

 

MY 93 F350 DIESEL DID THAT A FEW YRS AGO AND IT TURNED OUT TO BE JUST A BAD SWITCH. JUST A THOUGHT.

 

Wow didn't even think of that

 

the code scan port is located under the hood.it's up by the drivers side hood hinge on the inner fender.

 

Yea I looked and just looked again with a buddy of mine. Cannot locate it anywhere.

 

Found the test connector it was on the fuse box on the drivers side under hood.