fuel pressure switsh IS replaceable
Many years back on another list a big problem WAS diagnosed as caused by this piece going bad. There apparently were 3 versions of this switch, 2 were interchangeable. NATURALLY the M1028 I had, the unit was bad. Sent off for the part form a place I think was in CA. It came and "voila". I apparently had the ONLY version that was NOT interchangeable. NOW I have a box with 2 ( Figgering I am paying shipping, why not get two, right ? ) of the "other type, AND I went ahead and ordered a whole new fuel fitler base for the truck.
Lemme get to the "barn", find the box, ( it should be in the front seat of the M1028 ) see what I got and WHO I got it from and post it here. You might be able to use this stuff or try this guy.
Check and see if there are any numbers or anything that can identify precisely which unit ya got. NO use in me sending the stuff to you you cannot use either.
Steve